SIST EN 302 194-1 V2.1.1:2026

Navigation radars used on inland waterways - Harmonised Standard for access to radio spectrum - Part 1: Magnetron Radars

The present document specifies technical characteristics and methods of measurements for magnetron-based inland waterways navigational radars having the following characteristics:
• Transmitter peak power not exceeding 10 kW.
• Operating on a pulse modulated single, non-tuneable carrier frequency in the range specified in Table 1.
• At the transmitter output, a 4 port RF-circulator or equivalent is used.
• The antenna is passive, rotating and waveguide based.
• The radar display is an integral part of the equipment.

Navigacijski radarji, uporabljeni na celinskih plovnih poteh - Harmonizirani standard za dostop do radijskega spektra - 1. del: Magnetronski radarji

Ta dokument določa tehnične značilnosti in metode meritev za navigacijske radarje za notranje plovne poti, ki temeljijo na magnetronu in imajo naslednje značilnosti:
- Največja vršna moč oddajnika ne presega 10 kW.
- Delovanje na pulzno modulirani enojni, nenastavljivi nosilni frekvenci v območju, določenem v Tabeli 1.
- Na izhodu oddajnika se uporablja 4-portni RF-cirkulator ali enakovreden.
- Antena je pasivna, rotacijska in temelji na valovodu.
- Radarski zaslon je sestavni del opreme.

General Information

• Status: Published
• Public Enquiry End Date: 31-Jan-2026
• Publication Date: 06-Jul-2026
• ICS: 33.060.99 - Other equipment for radiocommunications
• ICS: 47.020.70 - Navigation and control equipment
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 30-Jun-2026
• Due Date: 04-Sep-2026
• Completion Date: 07-Jul-2026
• Ref Project: ETSI EN 302 194-1 V2.1.1 (2026-06) - Navigation radars used on inland waterways; Harmonised Standard for access to radio spectrum; Part 1: Magnetron Radars

Overview

SIST EN 302 194-1 V2.1.1:2026 is a harmonised European standard focusing on magnetron-based navigation radars for inland waterways, developed by SIST in alignment with ETSI. Its primary purpose is to specify the technical characteristics and measurement methods necessary for ensuring effective access to the radio spectrum for navigation radars operating in the 9 300 MHz to 9 500 MHz frequency range. The standard aims to support regulatory compliance, facilitate market access, and ensure the reliable and safe operation of radar systems used for navigation and collision avoidance on inland waterways.

Key features of this standard include requirements for transmitter peak power, emission limits, receiver performance, and measurement methods that help manufacturers design, test, and certify their magnetron radar equipment in accordance with essential regulatory directives such as Directive 2014/53/EU (Radio Equipment Directive).

Key Topics

• Scope of Radar Systems:

  • Applies to navigational radars on inland waterways using magnetron transmitters with peak power not exceeding 10 kW.
  • Equipment operates on a single, non-tuneable, pulse-modulated carrier frequency within the 9 300 MHz to 9 500 MHz band.

• Technical Requirements:

  • Transmitter characteristics:
    • Occupied bandwidth and -20 dB measured bandwidth must remain within specified frequency limits.
    • Peak pulse power must not exceed 10 kW.
    • Defined limits for out of band (OoB), spurious, and stand-by mode emissions.
  • Receiver characteristics:
    • Receiver sensitivity and selectivity criteria to ensure effective signal reception and discrimination.
    • Maximum input level and non-linearity requirements for robustness.
  • Equipment design:
    • Integral radar display, passive rotating waveguide-based antenna, and 4-port RF-circulator or equivalent at transmitter output.

• Measurement and Testing Methods:

  • Standardised methods provided to confirm compliance with emission masks, occupied bandwidth, sensitivity, selectivity, and environmental operating conditions.
  • Clear conformance clauses to facilitate repeatable and comparable verification.

• Regulatory Alignment:

  • Designed to demonstrate conformity with EU requirements for radio equipment.
  • Sets presumption of compliance when cited in the Official Journal of the EU.

Applications

This standard is highly relevant for:

• Manufacturers of radar systems for inland vessels, enabling them to design and test equipment that meets harmonised EU requirements and supports safe navigation.
• Regulators and Notified Bodies, who rely on the standard to assess compliance for market approval within the EU and EFTA member states.
• Vessel Operators, ensuring that installed radars provide reliable performance, minimise interference, and foster navigational safety along rivers, canals, and other inland waterways.

Typical application scenarios include new radar installations on passenger ships, cargo vessels, and workboats operating in regulated inland waterway regions, as well as maintenance or upgrade projects where equipment conformity is essential.

Related Standards

For a broader regulatory context, readers should consider:

• ETSI EN 303 676: Covers operational, functional, and technical requirements for inland waterway navigation radars.
• IEC 60945: International standard on electromagnetic compatibility and environmental testing of maritime equipment.
• ITU-R Recommendations: Including ITU-R M.1177 for emissions measurement and ITU-R SM.1541 for emission domain definitions.
• Directive 2014/53/EU: The Radio Equipment Directive.
• SIST EN 302 194-2: Addresses similar requirements for solid-state radars.

By following SIST EN 302 194-1 V2.1.1:2026, organisations benefit from a robust framework for navigation radar compliance, ensuring efficient radio spectrum use and safe, interference-free operation on European inland waterways.

Standards Content (Sample)

Draft ETSI EN 302 194-1 V2.0.0 (2025-11)

HARMONISED EUROPEAN STANDARD
Navigation radars used on inland waterways;
Harmonised Standard for access to radio spectrum;
Part 1: Magnetron Radars
2 Draft ETSI EN 302 194-1 V2.0.0 (2025-11)

Reference
REN/ERM-TGMAR-540
Keywords
harmonised standard, maritime, navigation, radar,
radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from the
ETSI Search & Browse Standards application.
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format on ETSI deliver repository.
Users should be aware that the present document may be revised or have its status changed,
this information is available in the Milestones listing.
If you find errors in the present document, please send your comments to
the relevant service listed under Committee Support Staff.
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure (CVD) program.
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2025.
All rights reserved.
ETSI
3 Draft ETSI EN 302 194-1 V2.0.0 (2025-11)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 9
3.1 Terms . 9
3.2 Symbols . 10
3.3 Abbreviations . 10
4 Technical requirements specifications . 11
4.1 Environmental profile . 11
4.2 Conformance requirements . 11
4.2.1 Transmitter Requirements . 11
4.2.1.1 Occupied Bandwidth . 11
4.2.1.1.1 Definition. 11
4.2.1.1.2 Limits . 11
4.2.1.1.3 Conformance . 11
4.2.1.2 Transmitter Peak Power . 11
4.2.1.2.1 Definition. 11
4.2.1.2.2 Limits . 11
4.2.1.2.3 Conformance . 12
4.2.1.3 Measured Bandwidth (B ) . 12
-20
4.2.1.3.1 Definition. 12
4.2.1.3.2 Limits . 12
4.2.1.3.3 Conformance . 12
4.2.1.4 Out-of-band Emissions . 12
4.2.1.4.1 Definition. 12
4.2.1.4.2 Limits . 12
4.2.1.4.3 Conformance . 13
4.2.1.5 Spurious Emissions . 13
4.2.1.5.1 Definition. 13
4.2.1.5.2 Limits . 13
4.2.1.5.3 Conformance . 14
4.2.1.6 Stand-by Mode Emissions . 14
4.2.1.6.1 Definition. 14
4.2.1.6.2 Limits . 14
4.2.1.6.3 Conformance . 14
4.2.2 Receiver Requirements . 14
4.2.2.1 Receiver Sensitivity . 14
4.2.2.1.1 Definition. 14
4.2.2.1.2 Limits . 14
4.2.2.1.3 Conformance . 14
4.2.2.2 Receiver Selectivity . 14
4.2.2.2.1 Definition. 14
4.2.2.2.2 Limits . 15
4.2.2.2.3 Conformance . 15
4.2.2.3 Receiver Maximum input Level . 16
4.2.2.3.1 Definition. 16
4.2.2.3.2 Limits . 16
4.2.2.3.3 Conformance . 16
4.2.2.4 Receiver non-linearity . 16
4.2.2.4.1 Definition. 16
ETSI
4 Draft ETSI EN 302 194-1 V2.0.0 (2025-11)
4.2.2.4.2 Limits . 16
4.2.2.4.3 Conformance . 16
5 Testing for compliance with technical requirements . 16
5.1 General Requirements . 16
5.2 Environmental conditions for testing . 17
5.3 Normal Test Conditions . 17
5.3.1 Normal temperature and humidity . 17
5.3.2 Normal test power supply . 17
5.3.2.1 DC test power supply . 17
5.4 Extreme test conditions . 17
5.4.1 Extreme temperature and humidity . 17
5.4.2 Extreme test power supply . 17
5.5 Radio test suites . 18
5.5.1 Transmitter test specification . 18
5.5.1.1 Occupied Bandwidth . 18
5.5.1.2 Transmitter Peak Power . 18
5.5.1.3 Measured Bandwidth (B ) . 19
-20
5.5.1.4 Out-of-band Emissions . 19
5.5.1.5 Spurious Emissions . 19
5.5.1.6 Stand-by Mode Emissions . 20
5.5.1.7 Pulse Length . 20
5.5.1.8 Pulse Rise Time . 21
5.5.2 Receiver test specifications . 22
5.5.2.1 Receiver Sensitivity . 22
5.5.2.2 Receiver Selectivity . 22
5.5.2.3 Receiver Maximum input Level . 23
5.5.2.4 Receiver non-linearity . 24
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 25
Annex B (informative): Maximum measurement uncertainty . 27
Annex C (normative): Transmitter Pulse Power measurement set up . 28
Annex D (normative): Occupied Bandwidth and Measured Bandwidth (B ) measurement
-20
set up . 30
Annex E (normative): Out-of-band Emissions, Spurious Emissions and Stand-by Mode
Emissions measurement set up . 32
Annex F (normative): Pulse Length and Pulse Rise Time measurement set up . 34
Annex G (normative): Receiver Sensitivity measurement setup . 36
Annex H (normative): Receiver Selectivity, Receiver Maximum input Level and Receiver
non-linearity measurement setup . 37
Annex I (normative): Calculation of the -40 dB Bandwidth . 39
Annex J (normative): Setting of B Bm, RBW and VBW for Occupied Bandwidth,
ref,
Measured Bandwidth (B ), Out-of-Band Emissions, Spurious
-20
Emissions and Stand-by Emissions . 40
Annex K (normative): Out-of-band Emissions, Spurious Emissions and Stand-by Mode
Emissions measurement procedure . 41
K.1 Measurement antenna position . 41
K.2 Correction for variable measurement antenna gain . 41
K.3 Measurement system calibration . 41
ETSI
5 Draft ETSI EN 302 194-1 V2.0.0 (2025-11)
K.4 Measurement procedure . 41
Annex L (informative): Checklist . 42
Annex M (informative): Bibliography . 44
Annex N (informative): Change history . 45
History . 46

ETSI
6 Draft ETSI EN 302 194-1 V2.0.0 (2025-11)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be
found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to
ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI IPR online database.
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its
Members. 3GPP™, LTE™ and 5G™ logo are trademarks of ETSI registered for the benefit of its Members and of the
3GPP Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of ®
the oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM), and is now submitted for the combined Public Enquiry and Vote
phase of the ETSI Standardisation Request deliverable Approval Procedure (SRdAP).
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.1] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.2].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive and associated
EFTA regulations.
The present document is part 1 of a multi-part deliverable covering navigation radars used on inland waterways, as
identified below:
Part 1: "Magnetron Radars";
Part 2: "Solid State Radars".
Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

ETSI
7 Draft ETSI EN 302 194-1 V2.0.0 (2025-11)
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI
8 Draft ETSI EN 302 194-1 V2.0.0 (2025-11)
1 Scope
The present document specifies technical characteristics and methods of measurements for magnetron-based inland
waterways navigational radars having the following characteristics:
• Transmitter peak power not exceeding 10 kW.
• Operating on a pulse modulated single, non-tuneable carrier frequency in the range specified in Table 1.
• At the transmitter output, a 4 port RF-circulator or equivalent is used.
• The antenna is passive, rotating and waveguide based.
• The radar display is an integral part of the equipment.
Table 1: Radio navigation service frequencies
Radio navigation service frequencies
Transmit 9 300 MHz to 9 500 MHz
Receive 9 300 MHz to 9 500 MHz

NOTE: The relationship between the present document and the essential requirements of article 3.2 of
Directive 2014/53/EU [i.2] is given in Annex A.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found in the
ETSI docbox.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long-term validity.
The following referenced documents are necessary for the application of the present document.
Not applicable.
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents may be useful in implementing an ETSI deliverable or add to the reader's
understanding, but are not required for conformance to the present document.
[i.1] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of
Directive 2014/53/EU of the European Parliament and of the Council.
ETSI
9 Draft ETSI EN 302 194-1 V2.0.0 (2025-11)
[i.2] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC.
[i.3] ITU Radio Regulations (2024).
[i.4] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted
emissions of radar systems".
[i.5] ETSI EG 203 336 (V1.2.1) (05-2020): "Guide for the selection of technical parameters for the
production of Harmonised Standards covering article 3.1(b) and article 3.2 of
Directive 2014/53/EU".
[i.6] ETSI EN 303 676 (V1.1.1) (07-2021): "Navigation radar used on inland waterways; operational,
functional and technical requirements".
[i.7] Recommendation ITU-R SM.1541-7 (09/2024): "Unwanted emissions in the out-of-band domain".
[i.8] ERC Recommendation 74-01 (05/2022): "Unwanted emissions in the spurious domain".
[i.9] ECC Recommendation (02)05 (03/2012): "Unwanted emissions".
[i.10] IEC 60945:2002/COR1:2008 including corrigendum 1 (04/2008): "Maritime navigation and
radiocommunication equipment and systems - General requirements - Methods of testing and
required test results".
[i.11] IEC 60153-2: 2016: "Hollow metallic waveguides. Part 2: Relevant specifications for ordinary
rectangular waveguides".
[i.12] Recommendation ITU-R SM.332-4 (07/1978): "Selectivity of receivers".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state producing the authorized emission
idle/stand-by state: state where the transmitter is available for traffic but is not in the active state
necessary bandwidth: width of the frequency band which is just sufficient to ensure the transmission of information at
the rate and with the quality required under specified conditions for a given class of emission
NOTE 1: This definition is taken from ITU Radio Regulation [i.3].
NOTE 2: For the radars covered by the present document the necessary bandwidth BN is considered to be B
-20
(20 dB bandwidth) as defined in Recommendation ITU-R SM.1541-7 [i.7].
occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the
mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission
NOTE 1: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value
of β/2 should be taken as 0,5 %.
NOTE 2: This definition is taken from ITU Radio Regulations [i.3], chapter I, 1.153.
NOTE 3: For primary radars β/2 equals 0,5 %.
Peak Envelope Power (PEP): average power supplied to the antenna transmission line by a transmitter during one
radio frequency cycle at the crest of the modulation envelope taken under normal operating conditions
NOTE: This definition is taken from ITU Radio Regulations [i.3], chapter I, 1.157.
ETSI
10 Draft ETSI EN 302 194-1 V2.0.0 (2025-11)
product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,
magnetrons)
pulse length: time between the 50 % amplitude (voltage) points
pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude
(voltage)
radial resolution capability: shortest distance between two targets on the same bearing that can be discriminated
NOTE: This is defined in ETSI EN 303 676 [i.6], clause 5.2.2.5.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
B -20 dB bandwidth (in MHz)
-20
B -40 dB bandwidth (in MHz)
-40
B Intermediate frequency bandwidth
IF
B Measurement bandwidth
m
Bref Reference bandwidth
dB decibel
dBm Power ratio expressed in decibels (dB) with reference to one milli watt
dBpp Power ratio expressed in decibels (dB) with reference to peak power
f Image frequency
image
f Nominal frequency of the receiver
rx
fo Operating frequency (in MHz) of the magnetron
G Gain of the measurement system (dB)
s
-23
k Boltzmann's constant (1,38 × 10 J/K)
Pt Pulse power of transmission

t Time
tp Pulse length
tr Pulse rise time
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ANSI American National Standardization Institute
CW Carrier Wave
dBi Antenna gain in deciBels relative to an isotropic antenna
DC Direct Current
ECC Electronic Communication Committee
EFTA European Free Trade Association
EN European Norm
ENR Excessive Noise Ratio
ERC Electronic Radiocommuinication Committee
EUT Equipment Under Test
FM Frequency Modulation
FTC Fast Time Constant
GHz GigaHertz
Hz Hertz
IEC International Electrotechnical Committee
IMD Intermodulation Distortion
ITU-R International Telecommunications Union - Radiocommunications
kHz kiloHertz
kW kiloWatt
LO Local Oszillator
MBR Measurement Bandwidth Ratio
MHz MegaHertz
NA not applicable
ETSI
11 Draft ETSI EN 302 194-1 V2.0.0 (2025-11)
OoB Out of Band
PEP Peak Envelope Power
RBW Resolution BandWidth
RF Radio Frequency
RML Receiver Maximal input Level
RWB Referenced Bandwidth
STC Sensitive Time Control
SWT SWeep Time
VBW Video BandWidth
VRM Variable Range Marker
VSWR Voltage Standing Wave Ratio
4 Technical requirements specifications
4.1 Environmental profile
The technical requirements of the present document apply under the environmental profile for operation of the
equipment, which shall be in accordance with its intended use, but as a minimum, shall be that specified in the test
conditions contained in the present document. The equipment shall comply with all the technical requirements of the
present document at all times when operating within the boundary limits of the operational environmental profile
defined by its intended use.
4.2 Conformance requirements
4.2.1 Transmitter Requirements
4.2.1.1 Occupied Bandwidth
4.2.1.1.1 Definition
Occupied bandwidth is the width of a frequency band such that, below the lower and above the upper frequency limits,
the mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission as
defined in ITU Radio Regulations [i.3], chapter I, 1.153.
4.2.1.1.2 Limits
The occupied bandwidth with β/2 = 0,5 % shall be maintained wholly within the frequency range specified in Table 1.
NOTE: The value of β/2 = 0,5 % is taken from ITU Radio Regulations [i.3], chapter I, 1.153.
4.2.1.1.3 Conformance
The conformance tests are specified in clause 5.5.1.1.
4.2.1.2 Transmitter Peak Power
4.2.1.2.1 Definition
The transmitter peak power of a pulse radar is the peak value of the transmitter pulse power during the transmission
pulse.
4.2.1.2.2 Limits
The transmitter peak power shall not exceed 10 kW.
ETSI
12 Draft ETSI EN 302 194-1 V2.0.0 (2025-11)
4.2.1.2.3 Conformance
The conformance tests are specified in clause 5.5.1.2.
4.2.1.3 Measured Bandwidth (B-20)
4.2.1.3.1 Definition
The measured -20 dB bandwidth (B ) is the measured bandwidth of the emission 20 dB below the measured peak
-20
power.
4.2.1.3.2 Limits
The measured -20 dB bandwidth (B ) of the signal shall be contained completely within the frequency range specified
-20
in Table 1.
4.2.1.3.3 Conformance
The conformance tests are specified in clause 5.5.1.3.
4.2.1.4 Out-of-band Emissions
4.2.1.4.1 Definition
Out of Band (OoB) emissions refer to emissions in the region between calculated -40 dB bandwidth (B ) and the
-40
spurious region (see definition of spurious region in clause 4.2.1.5.1).
NOTE 1: The calculated B is defined in Annex I.
-40
NOTE 2: More information can be found in Recommendation ITU-R SM.1541-7 [i.7], Annex 8 (OoB domain
emission limits for primary radar systems), clause 3.
4.2.1.4.2 Limits
Out-of-Band (OoB) emissions shall not exceed the limits specified in Table 2 below.
NOTE: These limits are specified in table 1 of Annex 2 of ECC Recommendation (02)05 [i.9].
The Out-of-Band mask rolls off at 30 dB/decade from the calculated B to the level specified for spurious emissions
-40
(see Figure 1 below).
Table 2: Limits for unwanted emissions in the OoB domain
Offset Limit Slope
Frequency x B-40 dBpp dB/decade
0 to 0,5 0 0
0,5 -40 -∞
0,5 to 2,3 -40 to -60 -30
ETSI
13 Draft ETSI EN 302 194-1 V2.0.0 (2025-11)

Figure 1: Out-of-Band emission limit masks [i.7]
4.2.1.4.3 Conformance
The conformance tests are specified in clause 5.5.1.4.
4.2.1.5 Spurious Emissions
4.2.1.5.1 Definition
Spurious emissions are unwanted emissions in the spurious domain. For active transmitters, the spurious domain is all
frequencies outside the OoB domain.
They include:
• harmonic emissions (whole multiples of the operating frequency);
• parasitic emissions (independent, accidentally);
• intermodulation (between oscillator and operation frequency or between oscillator and harmonics);
• emissions caused by frequency conversions.
4.2.1.5.2 Limits
The spurious emissions shall not exceed the limits specified in Table 3 for the frequency range defined in Table 3.
Table 3: Limits for spurious emissions
Lower band measurement Upper band measurement Limits
spurious emissions
30 MHz ≤ f < fo - 2,3 × B fo + 2,3 × B < f ≤ 26 GHz -43 - 10 × log(PEP) dB or -60 dB
-40 -40
(see note 1) (see notes 1 and 3) (see notes 2 and 3)
NOTE 1: The OoB boundaries are taken from ECC Recommendation (02)05 [i.9], Annex 2.
NOTE 2: Whichever is less stringent (attenuation (dB) below the power (PEP) supplied to the antenna port).
NOTE 3: These limits are specified in ERC Recommendation 74-01 [i.8], Annex 5 ("all other types of radar for
radiodetermination").
ETSI
14 Draft ETSI EN 302 194-1 V2.0.0 (2025-11)
4.2.1.5.3 Conformance
The conformance tests are specified in clause 5.5.1.5.
4.2.1.6 Stand-by Mode Emissions
4.2.1.6.1 Definition
The idle/stand-by state is defined as the state where the transmitter is available for operation but is not in the active
state.
4.2.1.6.2 Limits
The stand-by mode emissions shall not exceed the limits specified in Table 4.
Table 4: Limits for stand-by mode emissions
Frequency Range Limits
30 MHz ≤ f ≤ 1 GHz -57 dBm
1 GHz < f ≤ 26 GHz -47 dBm
NOTE: The frequency range of measurements and the limits are specified in
ERC Recommendation 74-01 [i.8], Table 1 and Table 15 respectively.

4.2.1.6.3 Conformance
The conformance tests are specified in clause 5.5.1.6.
4.2.2 Receiver Requirements
4.2.2.1 Receiver Sensitivity
4.2.2.1.1 Definition
Receiver sensitivity is the ability to receive a specified wanted signal level while providing a pre-determined level of
performance.
NOTE: The definition of selectivity is taken from Recommendation ITU-R SM.332-4 [i.12].
4.2.2.1.2 Limits
The equipment shall be capable to receive a wanted radar signal with a level of -80 dBm, resulting in an echo on the
radar display.
4.2.2.1.3 Conformance
The conformance tests are specified in clause 5.5.2.1.
4.2.2.2 Receiver Selectivity
4.2.2.2.1 Definition
The radar receiver selectivity is a measure of its ability to discriminate between a wanted signal to which the receiver is
tuned and unwanted signals.
NOTE 1: The definition of selectivity is taken from Recommendation ITU-R SM.332-4 [i.12].
NOTE 2: Radar receiver selectivity refers to effects measured within the linear range of the receiver to transpose at
its output the radar desired signal and to reject unwanted signals located outside the B bandwidth.
-40
ETSI
15 Draft ETSI EN 302 194-1 V2.0.0 (2025-11)
NOTE 3: Unwanted signals inside the B bandwidth are not considered for the receiver selectivity since they fall
-40
into the desired frequency range for the reception of wanted signals.
4.2.2.2.2 Limits
With a wanted signal with a power level of -77 dBm and an unwanted signal as in Table 5 and illustrated in Figure 2,
the equipment's display shall not show a radar signal for the applied disturbing signal.
Table 5: Receiver selectivity mask
Frequency offset relative to fo by Test signal output level Slope
multiple of the B bandwidth in dBm dB/decade
-40
0 to 0,5 -80 -
0,5 -40 -∞
0,5 to 2,3 -40 to -20 -30
-20 0
2,3 to ∞
Figure 2: Receiver selectivity mask (not to scale)
The selectivity of a receiver tuned at an operating frequency fo shall be verified in the following frequency ranges:
fo - 2,3 × B - 800 MHz ≤ f ≤ fo - B / 2
-40 -40
fo + B / 2 ≤ f ≤ fo + 2,3 × B + 800 MHz
-40 -40
If the image frequencies, as calculated in formula (1) below, are not covered by the frequency ranges defined above, the
selectivity measurement shall also be done on the following frequency range:
f - B / 2 ≤ f ≤ f + B / 2
image -40 image -40
to cover the image frequencies susceptibility.
� +2� , �� � > �
� �� �� �
� = � (1)
�����
� −2×� , �� � < �
� �� �� �
4.2.2.2.3 Conformance
The conformance tests are specified in clause 5.5.2.2.
ETSI
16 Draft ETSI EN 302 194-1 V2.0.0 (2025-11)
4.2.2.3 Receiver Maximum input Level
4.2.2.3.1 Definition
The Receiver Maximum Input Level is the input level of two input radar signals, resulting in two radar echoes on the
same bearing in a defined distance in accordance with the radial resolution capability of the EUT, such that the radar
echoes can be discriminated.
4.2.2.3.2 Limits
The Receiver Maximum Input Level with a radial resolution capability of 15 m shall be at least -35 dBm.
RML ≥ -35 dBm (2)
NOTE: The value for the radial resolution 3capability is taken from clause 5.2.2.5 of ETSI EN 303 676 [i.6].
4.2.2.3.3 Conformance
The conformance tests are specified in clause 5.5.2.3.
4.2.2.4 Receiver non-linearity
4.2.2.4.1 Definition
rd
Receiver non-linearity is a measure of the capability of the radar to suppress the 3 order Intermodulation Distortion
(IMD) product due to two unwanted signals with the specified levels.
NOTE 1: The unwanted signals at frequencies f and f are selected as follows:
1 2
f = 2 × f - f (3)
rx 1 2
rd
Equation 3 corresponds to the 3 order IMD.
NOTE 2: For the radars within the scope of the present document, only the third order IMD products are of primary
interest.
NOTE 3: Superheterodyne receivers as used by radars in the scope of the present document use mixers to convert
RF signals to an Intermediate Frequency (IF). Due to imperfection of a real-world mixer, it comes always
with a non-linear response, i.e. additional unwanted signals occur at the output of a mixer.
4.2.2.4.2 Limits
With the equipment's receiver tuned at a frequency f = 9 400 MHz and its display set up to suppress a wanted radar
rx
signal with a level of -35 dBm, two unwanted signals at frequencies f = 9 500 MHz and f = 9 600 MHz with a power
1 2
level of -35 dBm shall not cause any radar echo on the equipment's display.
4.2.2.4.3 Conformance
The conformance tests are specified in clause 5.5.2.4.
5 Testing for compliance with technical requirements
5.1 General Requirements
All tests shall be performed under normal test conditions specified in clause 5.3 unless stated otherwise.
ETSI
17 Draft ETSI EN 302 194-1 V2.0.0 (2025-11)
5.2 Environmental conditions for testing
Tests defined in the present document shall be carried out at representative points within the boundary limits of the
operational environmental profile defined by its intended use, which, as a minimum, shall be that specified in the test
conditions contained in the present document.
Where technical performance varies subject to environmental conditions, tests shall be carried out under a sufficient
variety of environmental conditions as specified in the present document to give confidence of compliance for the
affected technical requirements.
5.3 Normal Test Conditions
5.3.1 Normal temperature and humidity
The temperature and humidity conditions for tests shall be a combination of temperature and humidity within the
following ranges:
o o
C to +35 C;
a) temperature: +15
b) relative humidity: not exceeding 75 %.
The relative humidity shall be recorded in the test report.
NOTE: These values are defined in clause 5.2.1 of IEC 60945 [i.10].
5.3.2 Normal test power supply
5.3.2.1 DC test power supply
The normal test voltage shall be the nominal voltage as stated in the user documentation.
For the purpose of testing, the power source voltage shall be measured at the input terminals of the equipment.
During testing, the power source voltage deviation relative to the voltage level at the beginning of each test shall not
exceed 3 %.
NOTE: This voltage deviation is defined in clause 5.2.1 of IEC 60945 [i.10].
5.4 Extreme test conditions
5.4.1 Extreme temperature and humidity
The temperature and humidity conditions for extreme tests shall be a combination of nominal temperature and humidity
within the following ranges:
o o
C to +55 C;
a) temperature: -25
b) relative humidity: not exceeding 93 %.
Measurements shall be made at least at the lowest and highest temperatures. The relative humidity shall be recorded in
the test report.
NOTE: These values are defined in clause 8.1, table 3 of IEC 60945 [i.10].
5.4.2 Extreme test power supply
Extreme power voltage and frequency variations shall be as specified in Table 6.
ETSI
18 Draft ETSI EN 302 194-1 V2.0.0 (2025-11)
Table 6: Extreme power supply voltage variations
Power supply Voltage variation %
DC +30
-10
NOTE: These values are defined in clause 5.2.2, Table 1 of IEC 60945 [i.10].
5.5 Radio test suites
5.5.1 Transmitter test specification
5.5.1.1 Occupied Bandwidth
The measurement setup shall be as described in Annex D and with the settings defined in Annex J.
The test shall be performed under both normal and extreme test conditions as defined in clause 5.3 and clause 5.4
respectively.
The measurement steps shall be as follows:
a) Set the EUT to a range of 1 200 m.
b) Adjust the signal attenuation to ensure that the signal power envelope is above the noise floor of the spectrum
analyser to avoid the noise signals on either side of the power envelope being included in the measurement.
c) Set the sweep time SWT to 10 s.
d) Measure the total power in a frequency range from 100 MHz below to 100 MHz above the peak value by
adding up each measuremen
...

Final draft ETSI EN 302 194-1 V2.1.0 (2026-04)

HARMONISED EUROPEAN STANDARD
Navigation radars used on inland waterways;
Harmonised Standard for access to radio spectrum;
Part 1: Magnetron Radars
2 Final draft ETSI EN 302 194-1 V2.1.0 (2026-04)

Reference
DEN/ERM-TGMAR-540
Keywords
harmonised standard, maritime, navigation, radar,
radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from the
ETSI Search & Browse Standards application.
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format on ETSI deliver repository.
Users should be aware that the present document may be revised or have its status changed,
this information is available in the Milestones listing.
If you find errors in the present document, please send your comments to
the relevant service listed under Committee Support Staff.
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure (CVD) program.
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2026.
All rights reserved.
ETSI
3 Final draft ETSI EN 302 194-1 V2.1.0 (2026-04)

Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 9
3.1 Terms . 9
3.2 Symbols . 10
3.3 Abbreviations . 10
4 Technical requirements specifications . 11
4.1 Environmental profile . 11
4.2 Conformance requirements . 11
4.2.1 Transmitter Requirements . 11
4.2.1.1 Occupied Bandwidth . 11
4.2.1.1.1 Definition. 11
4.2.1.1.2 Limits . 11
4.2.1.1.3 Conformance . 11
4.2.1.2 Transmitter Peak Power . 11
4.2.1.2.1 Definition. 11
4.2.1.2.2 Limits . 12
4.2.1.2.3 Conformance . 12
4.2.1.3 Measured Bandwidth (B ) . 12
-20
4.2.1.3.1 Definition. 12
4.2.1.3.2 Limits . 12
4.2.1.3.3 Conformance . 12
4.2.1.4 Out of Band Emissions. 12
4.2.1.4.1 Definition. 12
4.2.1.4.2 Limits . 12
4.2.1.4.3 Conformance . 13
4.2.1.5 Spurious Emissions . 13
4.2.1.5.1 Definition. 13
4.2.1.5.2 Limits . 13
4.2.1.5.3 Conformance . 14
4.2.1.6 Stand-by Mode Emissions . 14
4.2.1.6.1 Definition. 14
4.2.1.6.2 Limits . 14
4.2.1.6.3 Conformance . 14
4.2.2 Receiver Requirements . 14
4.2.2.1 Receiver Sensitivity . 14
4.2.2.1.1 Definition. 14
4.2.2.1.2 Limits . 14
4.2.2.1.3 Conformance . 14
4.2.2.2 Receiver Selectivity . 14
4.2.2.2.1 Definition. 14
4.2.2.2.2 Limits . 15
4.2.2.2.3 Conformance . 15
4.2.2.3 Receiver Maximum input Level . 16
4.2.2.3.1 Definition. 16
4.2.2.3.2 Limits . 16
4.2.2.3.3 Conformance . 16
4.2.2.4 Receiver non-linearity . 16
4.2.2.4.1 Definition. 16
ETSI
4 Final draft ETSI EN 302 194-1 V2.1.0 (2026-04)

4.2.2.4.2 Limits . 16
4.2.2.4.3 Conformance . 16
5 Testing for compliance with technical requirements . 16
5.1 General Requirements . 16
5.2 Environmental conditions for testing . 17
5.3 Normal Test Conditions . 17
5.3.1 Normal temperature and humidity . 17
5.3.2 Normal test power supply . 17
5.3.2.1 DC test power supply . 17
5.4 Extreme test conditions . 17
5.4.1 Extreme temperature and humidity . 17
5.4.2 Extreme test power supply . 17
5.5 Radio test suites . 18
5.5.1 Transmitter test specification . 18
5.5.1.1 Occupied Bandwidth . 18
5.5.1.2 Transmitter Peak Power . 18
5.5.1.3 Measured Bandwidth (B ) . 19
-20
5.5.1.4 Out of Band Emissions. 19
5.5.1.5 Spurious Emissions . 19
5.5.1.6 Stand-by Mode Emissions . 20
5.5.1.7 Pulse Length . 20
5.5.1.8 Pulse Rise Time . 21
5.5.2 Receiver test specifications . 22
5.5.2.1 Receiver Sensitivity . 22
5.5.2.2 Receiver Selectivity . 22
5.5.2.3 Receiver Maximum input Level . 23
5.5.2.4 Receiver non-linearity . 24
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 26
Annex B (informative): Maximum measurement uncertainty . 28
Annex C (normative): Transmitter Pulse Power measurement set up . 29
Annex D (normative): Occupied Bandwidth and Measured Bandwidth (B ) measurement
-20
set up . 31
Annex E (normative): Out of Band Emissions, Spurious Emissions and Stand-by Mode
Emissions measurement set up . 33
Annex F (normative): Pulse Length and Pulse Rise Time measurement set up . 35
Annex G (normative): Receiver Sensitivity measurement setup . 37
Annex H (normative): Receiver Selectivity, Receiver Maximum input Level and Receiver
non-linearity measurement setup . 38
Annex I (normative): Calculation of the -40 dB Bandwidth . 40
Annex J (normative): Setting of B B , RBW and VBW for Occupied Bandwidth,
ref, m
Measured Bandwidth (B ), Out of Band Emissions, Spurious
-20
Emissions and Stand-by Emissions . 41
Annex K (normative): Out of Band Emissions, Spurious Emissions and Stand-by Mode
Emissions measurement procedure . 42
K.1 Measurement antenna position . 42
K.2 Correction for variable measurement antenna gain . 42
K.3 Measurement system calibration . 42
ETSI
5 Final draft ETSI EN 302 194-1 V2.1.0 (2026-04)

K.4 Measurement procedure . 42
Annex L (informative): Checklist . 43
Annex M (informative): Bibliography . 45
Annex N (informative): Change history . 46
History . 47

ETSI
6 Final draft ETSI EN 302 194-1 V2.1.0 (2026-04)

Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be
found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to
ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI IPR online database.
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its
Members. 3GPP™, LTE™ and 5G™ logo are trademarks of ETSI registered for the benefit of its Members and of the
3GPP Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of ®
the oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This final draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee
Electromagnetic compatibility and Radio spectrum Matters (ERM), and is now submitted for the Vote phase of the
ETSI Standardisation Request deliverable Approval Procedure (SRdAP).
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.1] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.2].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive and associated
EFTA regulations.
The present document is part 1 of a multi-part deliverable covering navigation radars used on inland waterways, as
identified below:
Part 1: "Magnetron Radars";
Part 2: "Solid State Radars".
Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

ETSI
7 Final draft ETSI EN 302 194-1 V2.1.0 (2026-04)

Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI
8 Final draft ETSI EN 302 194-1 V2.1.0 (2026-04)

1 Scope
The present document specifies technical characteristics and methods of measurements for magnetron-based inland
waterways navigational radars having the following characteristics:
• Transmitter peak power not exceeding 10 kW.
• Operating on a pulse modulated single, non-tuneable carrier frequency in the range specified in Table 1.
• At the transmitter output, a 4 port RF-circulator or equivalent is used.
• The antenna is passive, rotating and waveguide based.
• The radar display is an integral part of the equipment.
Table 1: Radio navigation service frequencies
Radio navigation service frequencies
Transmit 9 300 MHz to 9 500 MHz
Receive 9 300 MHz to 9 500 MHz

NOTE: The relationship between the present document and the essential requirements of article 3.2 of
Directive 2014/53/EU [i.2] is given in Annex A.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or non-
specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found in the
ETSI docbox.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long-term validity.
The following referenced documents are necessary for the application of the present document.
Not applicable.
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long-term validity.
The following referenced documents may be useful in implementing an ETSI deliverable or add to the reader's
understanding, but are not required for conformance to the present document.
[i.1] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of
Directive 2014/53/EU of the European Parliament and of the Council.
ETSI
9 Final draft ETSI EN 302 194-1 V2.1.0 (2026-04)

[i.2] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC.
[i.3] ITU Radio Regulations (2024).
[i.4] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted
emissions of radar systems".
[i.5] ETSI EG 203 336 (V1.2.1) (05-2020): "Guide for the selection of technical parameters for the
production of Harmonised Standards covering article 3.1(b) and article 3.2 of
Directive 2014/53/EU".
[i.6] ETSI EN 303 676 (V1.1.1) (07-2021): "Navigation radar used on inland waterways; operational,
functional and technical requirements".
[i.7] Recommendation ITU-R SM.1541-7 (09/2024): "Unwanted emissions in the Out of Band
domain".
[i.8] ERC Recommendation 74-01 (05/2022): "Unwanted emissions in the spurious domain".
[i.9] ECC Recommendation (02)05 (03/2012): "Unwanted emissions".
[i.10] IEC 60945:2002/COR1:2008 including corrigendum 1 (04/2008): "Maritime navigation and
radiocommunication equipment and systems - General requirements - Methods of testing and
required test results".
[i.11] IEC 60153-2: 2016: "Hollow metallic waveguides. Part 2: Relevant specifications for ordinary
rectangular waveguides".
[i.12] Recommendation ITU-R SM.332-4 (07/1978): "Selectivity of receivers".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state producing the authorized emission
idle/stand-by state: state where the transmitter is available for traffic but is not in the active state
necessary bandwidth: width of the frequency band which is just sufficient to ensure the transmission of information at
the rate and with the quality required under specified conditions for a given class of emission
NOTE 1: This definition is taken from ITU Radio Regulation [i.3].
NOTE 2: For the radars covered by the present document the necessary bandwidth BN is considered to be B
-20
(20 dB bandwidth) as defined in Recommendation ITU-R SM.1541-7 [i.7].
occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the
mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission
NOTE 1: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value
of β/2 should be taken as 0,5 %.
NOTE 2: This definition is taken from ITU Radio Regulations [i.3], chapter I, 1.153.
NOTE 3: For primary radars β/2 equals 0,5 %.
ETSI
10 Final draft ETSI EN 302 194-1 V2.1.0 (2026-04)

Peak Envelope Power (PEP): average power supplied to the antenna transmission line by a transmitter during one
radio frequency cycle at the crest of the modulation envelope taken under normal operating conditions
NOTE: This definition is taken from ITU Radio Regulations [i.3], chapter I, 1.157.
product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,
magnetrons)
pulse length: time between the 50 % amplitude (voltage) points
pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude
(voltage)
radial resolution capability: shortest distance between two targets on the same bearing that can be discriminated
NOTE: This is defined in ETSI EN 303 676 [i.6], clause 5.2.2.5.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
B -20 dB bandwidth (in MHz)
-20
B -40 dB bandwidth (in MHz)
-40
B Intermediate frequency bandwidth
IF
B Measurement bandwidth
m
Bref Reference bandwidth
dB decibel
dBm Power ratio expressed in decibels (dB) with reference to one milli watt
dBpp Power ratio expressed in decibels (dB) with reference to peak power
f Image frequency
image
f Nominal frequency of the receiver
rx
fo Operating frequency (in MHz) of the magnetron
G Gain of the measurement system (dB)
s
-23
k Boltzmann's constant (1,38 × 10 J/K)
Pt Pulse power of transmission
t Time
tp Pulse length
tr Pulse rise time
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ANSI American National Standards Institute
dBi Gain in decibels relative to an isotropic antenna
DC Direct Current
ECC Electronic Communication Committee
EFTA European Free Trade Association
EN European Norm
ERC Electronic Radiocommunication Committee
EUT Equipment Under Test
FM Frequency Modulation
FTC Fast Time Constant
GHz GigaHertz
IEC International Electrotechnical Committee
IMD Intermodulation Distortion
ITU-R International Telecommunication Union - Radiocommunication Sector
kHz kiloHertz
kW kiloWatt
LO Local Oscillator
MBR Measurement Bandwidth Ratio
ETSI
11 Final draft ETSI EN 302 194-1 V2.1.0 (2026-04)

MHz MegaHertz
NA not applicable
OoB Out of Band
PEP Peak Envelope Power
RBW Resolution BandWidth
RF Radio Frequency
RML Receiver Maximal input Level
RWB Referenced BandWidth
STC Sensitive Time Control
SWT SWeep Time
VBW Video BandWidth
VRM Variable Range Marker
VSWR Voltage Standing Wave Ratio
4 Technical requirements specifications
4.1 Environmental profile
The technical requirements of the present document apply under the environmental profile for operation of the
equipment, which shall be in accordance with its intended use, but as a minimum, shall be that specified in the test
conditions contained in the present document. The equipment shall comply with all the technical requirements of the
present document at all times when operating within the boundary limits of the operational environmental profile
defined by its intended use.
4.2 Conformance requirements
4.2.1 Transmitter Requirements
4.2.1.1 Occupied Bandwidth
4.2.1.1.1 Definition
Occupied bandwidth is the width of a frequency band such that, below the lower and above the upper frequency limits,
β/2 of the total mean power of a given emission as
the mean powers emitted are each equal to a specified percentage
defined in ITU Radio Regulations [i.3], chapter I, 1.153.
4.2.1.1.2 Limits
The occupied bandwidth with β/2 = 0,5 % shall be maintained wholly within the frequency range specified in Table 1.
NOTE: The value of β/2 = 0,5 % is taken from ITU Radio Regulations [i.3], chapter I, 1.153.
4.2.1.1.3 Conformance
The conformance tests are specified in clause 5.5.1.1.
4.2.1.2 Transmitter Peak Power
4.2.1.2.1 Definition
The transmitter peak power of a pulse radar is the peak value of the transmitter pulse power during the transmission
pulse.
ETSI
12 Final draft ETSI EN 302 194-1 V2.1.0 (2026-04)

4.2.1.2.2 Limits
The transmitter peak power shall not exceed 10 kW.
4.2.1.2.3 Conformance
The conformance tests are specified in clause 5.5.1.2.
4.2.1.3 Measured Bandwidth (B-20)
4.2.1.3.1 Definition
The measured -20 dB bandwidth (B ) is the measured bandwidth of the emission 20 dB below the measured peak
-20
power.
4.2.1.3.2 Limits
The measured -20 dB bandwidth (B ) of the signal shall be contained completely within the frequency range specified
-20
in Table 1.
4.2.1.3.3 Conformance
The conformance tests are specified in clause 5.5.1.3.
4.2.1.4 Out of Band Emissions
4.2.1.4.1 Definition
Out of Band (OoB) emissions refer to emissions in the region between calculated -40 dB bandwidth (B ) and the
-40
spurious region (see definition of spurious region in clause 4.2.1.5.1).
NOTE 1: The calculated B is defined in Annex I.
-40
NOTE 2: More information can be found in Recommendation ITU-R SM.1541-7 [i.7], Annex 8 (OoB domain
emission limits for primary radar systems), clause 3.
4.2.1.4.2 Limits
Out of Band (OoB) emissions shall not exceed the limits specified in Table 2 below.
NOTE: These limits are specified in Table 1 of Annex 2 of ECC Recommendation (02)05 [i.9].
The Out of Band mask rolls off at 30 dB/decade from the calculated B to the level specified for spurious emissions
-40
(see Figure 1 below).
Table 2: Limits for unwanted emissions in the OoB domain
Offset Limit Slope
Frequency x B dB dB/decade
-40 pp
0 to 0,5 0 0
0,5 -40 -∞
0,5 to 2,3 -40 to -60 -30
ETSI
13 Final draft ETSI EN 302 194-1 V2.1.0 (2026-04)

Figure 1: Out of Band emission limit masks [i.7]
4.2.1.4.3 Conformance
The conformance tests are specified in clause 5.5.1.4.
4.2.1.5 Spurious Emissions
4.2.1.5.1 Definition
Spurious emissions are unwanted emissions in the spurious domain. For active transmitters, the spurious domain is all
frequencies outside the OoB domain.
They include:
• harmonic emissions (whole multiples of the operating frequency);
• parasitic emissions (independent, accidentally);
• intermodulation (between oscillator and operation frequency or between oscillator and harmonics);
• emissions caused by frequency conversions.
4.2.1.5.2 Limits
The spurious emissions shall not exceed the limits specified in Table 3 for the frequency range defined in Table 3.
Table 3: Limits for spurious emissions
Lower band measurement Upper band measurement Limits
spurious emissions
30 MHz ≤ f < fo - 2,3 × B fo + 2,3 × B < f ≤ 26 GHz -43 - 10 × log(PEP) dB or -60 dB
-40 -40
(see note 1) (see notes 1 and 3) (see notes 2 and 3)
NOTE 1: The OoB boundaries are taken from ECC Recommendation (02)05 [i.9], Annex 2.
NOTE 2: Whichever is less stringent (attenuation (dB) below the power (PEP) supplied to the antenna port).
NOTE 3: These limits are specified in ERC Recommendation 74-01 [i.8], Annex 5 ("all other types of radar for
radiodetermination").
ETSI
14 Final draft ETSI EN 302 194-1 V2.1.0 (2026-04)

4.2.1.5.3 Conformance
The conformance tests are specified in clause 5.5.1.5.
4.2.1.6 Stand-by Mode Emissions
4.2.1.6.1 Definition
The idle/stand-by state is defined as the state where the transmitter is available for operation but is not in the active
state.
4.2.1.6.2 Limits
The stand-by mode emissions shall not exceed the limits specified in Table 4.
Table 4: Limits for stand-by mode emissions
Frequency Range Limits
30 MHz ≤ f ≤ 1 GHz -57 dBm
1 GHz < f ≤ 26 GHz -47 dBm
NOTE: The frequency range of measurements and the limits are specified in
ERC Recommendation 74-01 [i.8], Table 1 and Table 15 respectively.

4.2.1.6.3 Conformance
The conformance tests are specified in clause 5.5.1.6.
4.2.2 Receiver Requirements
4.2.2.1 Receiver Sensitivity
4.2.2.1.1 Definition
Receiver sensitivity is the ability to receive a specified wanted signal level while providing a pre-determined level of
performance.
NOTE: The definition of sensitivity is taken from ETSI EG 203 336 [i.5].
4.2.2.1.2 Limits
The equipment shall be capable to receive a wanted radar signal with a level of -80 dBm, resulting in an echo on the
radar display.
4.2.2.1.3 Conformance
The conformance tests are specified in clause 5.5.2.1.
4.2.2.2 Receiver Selectivity
4.2.2.2.1 Definition
The radar receiver selectivity is a measure of its ability to discriminate between a wanted signal to which the receiver is
tuned and unwanted signals.
NOTE 1: The definition of selectivity is taken from Recommendation ITU-R SM.332-4 [i.12].
NOTE 2: Radar receiver selectivity refers to effects measured within the linear range of the receiver to transpose at
its output the radar desired signal and to reject unwanted signals located outside the B bandwidth.
-40
ETSI
15 Final draft ETSI EN 302 194-1 V2.1.0 (2026-04)

NOTE 3: Unwanted signals inside the B bandwidth are not considered for the receiver selectivity since they fall
-40
into the desired frequency range for the reception of wanted signals.
4.2.2.2.2 Limits
With a wanted signal with a power level of -77 dBm and an unwanted signal as in Table 5 and illustrated in Figure 2,
the equipment's display shall not show a radar signal for the applied disturbing signal.
Table 5: Receiver selectivity mask
Frequency offset relative to fo by Test signal output level Slope
multiple of the B bandwidth in dBm dB/decade
-40
0 to 0,5 -80 -
0,5 -40 -∞
0,5 to 2,3 -40 to -20 -30
-20 0
2,3 to ∞
Figure 2: Receiver selectivity mask (not to scale)
The selectivity of a receiver tuned at an operating frequency fo shall be verified in the following frequency ranges:
fo - 2,3 × B - 800 MHz ≤ f ≤ fo - B / 2
-40 -40
fo + B / 2 ≤ f ≤ fo + 2,3 × B + 800 MHz
-40 -40
If the image frequencies, as calculated in formula (1) below, are not covered by the frequency ranges defined above, the
selectivity measurement shall also be done on the following frequency range:
f - B / 2 ≤ f ≤ f + B / 2
image -40 image -40
to cover the image frequencies susceptibility.
� +2� ,�� � > �
� �� �� �
� = � (1)
�����
� −2×� ,�� � < �
� �� �� �
4.2.2.2.3 Conformance
The conformance tests are specified in clause 5.5.2.2.
ETSI
16 Final draft ETSI EN 302 194-1 V2.1.0 (2026-04)

4.2.2.3 Receiver Maximum input Level
4.2.2.3.1 Definition
The Receiver Maximum Input Level is the input level of two input radar signals, resulting in two radar echoes on the
same bearing in a defined distance in accordance with the radial resolution capability of the EUT, such that the radar
echoes can be discriminated.
4.2.2.3.2 Limits
The Receiver Maximum Input Level with a radial resolution capability of 15 m shall be at least -35 dBm.
RML ≥ -35 dBm (2)
NOTE: The value for the radial resolution capability is taken from clause 5.2.2.5 of ETSI EN 303 676 [i.6].
4.2.2.3.3 Conformance
The conformance tests are specified in clause 5.5.2.3.
4.2.2.4 Receiver non-linearity
4.2.2.4.1 Definition
rd
Receiver non-linearity is a measure of the capability of the radar to suppress the 3 order Intermodulation Distortion
(IMD) product due to two unwanted signals with the specified levels.
NOTE 1: The unwanted signals at frequencies f and f are selected as follows:
1 2
f = 2 × f - f (3)
rx 1 2
rd
Equation 3 corresponds to the 3 order IMD.
NOTE 2: For the radars within the scope of the present document, only the third order IMD products are of primary
interest.
NOTE 3: Superheterodyne receivers as used by radars in the scope of the present document use mixers to convert
RF signals to an Intermediate Frequency (IF). Due to imperfection of a real-world mixer, it comes always
with a non-linear response, i.e. additional unwanted signals occur at the output of a mixer.
4.2.2.4.2 Limits
With the equipment's receiver tuned at a frequency f = 9 400 MHz and its display set up to suppress a wanted radar
rx
signal with a level of -35 dBm, two unwanted signals at frequencies f = 9 500 MHz and f = 9 600 MHz with a power
1 2
level of -35 dBm shall not cause any radar echo on the equipment's display.
4.2.2.4.3 Conformance
The conformance tests are specified in clause 5.5.2.4.
5 Testing for compliance with technical requirements
5.1 General Requirements
All tests shall be performed under normal test conditions specified in clause 5.3 unless stated otherwise.
ETSI
17 Final draft ETSI EN 302 194-1 V2.1.0 (2026-04)

5.2 Environmental conditions for testing
Tests defined in the present document shall be carried out at representative points within the boundary limits of the
operational environmental profile defined by its intended use, which, as a minimum, shall be that specified in the test
conditions contained in the present document.
Where technical performance varies subject to environmental conditions, tests shall be carried out under a sufficient
variety of environmental conditions as specified in the present document to give confidence of compliance for the
affected technical requirements.
5.3 Normal Test Conditions
5.3.1 Normal temperature and humidity
The temperature and humidity conditions for tests shall be a combination of temperature and humidity within the
following ranges:
a) temperature: +15 °C to +35 °C;
b) relative humidity: not exceeding 75 %.
The relative humidity shall be recorded in the test report.
NOTE: These values are defined in clause 5.2.1 of IEC 60945 [i.10].
5.3.2 Normal test power supply
5.3.2.1 DC test power supply
The normal test voltage shall be the nominal voltage as stated in the user documentation.
For the purpose of testing, the power source voltage shall be measured at the input terminals of the equipment.
During testing, the power source voltage deviation relative to the voltage level at the beginning of each test shall not
exceed 3 %.
NOTE: This voltage deviation is defined in clause 5.2.1 of IEC 60945 [i.10].
5.4 Extreme test conditions
5.4.1 Extreme temperature and humidity
The temperature and humidity conditions for extreme tests shall be a combination of nominal temperature and humidity
within the following ranges:
a) temperature: -25 °C to +55 °C;
b) relative humidity: not exceeding 93 %.
Measurements shall be made at least at the lowest and highest temperatures. The relative humidity shall be recorded in
the test report.
NOTE: These values are defined in clause 8.1, Table 3 of IEC 60945 [i.10].
5.4.2 Extreme test power supply
Extreme power voltage and frequency variations shall be as specified in Table 6.
ETSI
18 Final draft ETSI EN 302 194-1 V2.1.0 (2026-04)

Table 6: Extreme power supply voltage variations
Power supply Voltage variation %
DC +30
-10
NOTE: These values are defined in clause 5.2.2, Table 1 of IEC 60945 [i.10].
5.5 Radio test suites
5.5.1 Transmitter test specification
5.5.1.1 Occupied Bandwidth
The measurement setup shall be as described in Annex D and with the settings defined in Annex J.
The test shall be performed under both normal and extreme test conditions as defined in clause 5.3 and clause 5.4
respectively.
The measurement steps shall be as follows:
a) Set the EUT to a range of 1 200 m.
b) Adjust the signal attenuation to ensure that the signal power envelope is above the noise floor of the spectrum
analyser to avoid the noise signals on either side of the power envelope being included in the measurement.
c) Set the sweep time SWT to 10 s.
d) Measure the total power in a frequency range from 100 MHz below to 100 MHz above
...

HARMONISED EUROPEAN STANDARD
Navigation radars used on inland waterways;
Harmonised Standard for access to radio spectrum;
Part 1: Magnetron Radars
2 ETSI EN 302 194-1 V2.1.1 (2026-06)

Reference
DEN/ERM-TGMAR-540
Keywords
harmonised standard, maritime, navigation, radar,
radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from the
ETSI Search & Browse Standards application.
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format on ETSI deliver repository.
Users should be aware that the present document may be revised or have its status changed,
this information is available in the Milestones listing.
If you find errors in the present document, please send your comments to
the relevant service listed under Committee Support Staff.
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure (CVD) program.
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part of this document may be reproduced in any form, by any means and in any media, without the prior written
authorization of ETSI and except as expressly permitted below.
By way of exception and when the document is a normative deliverable (European Standard (EN),
Technical Specification (TS), Group Specification (GS) or ETSI Standard (ES)), ETSI authorizes to reproduce
and incorporate into products, services and technical documentation only those extracts (e.g. templates) that are strictly
necessary for the technical implementation of the normative deliverable, to ensure compliance with the latter.
Nothing in this notice shall be construed as limiting any mandatory exceptions to copyright provided by applicable law.

© ETSI 2026.
All rights reserved.
ETSI
3 ETSI EN 302 194-1 V2.1.1 (2026-06)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 9
3.1 Terms . 9
3.2 Symbols . 10
3.3 Abbreviations . 10
4 Technical requirements specifications . 11
4.1 Environmental profile . 11
4.2 Conformance requirements . 11
4.2.1 Transmitter Requirements . 11
4.2.1.1 Occupied Bandwidth . 11
4.2.1.1.1 Definition. 11
4.2.1.1.2 Limits . 11
4.2.1.1.3 Conformance . 11
4.2.1.2 Transmitter Peak Power . 11
4.2.1.2.1 Definition. 11
4.2.1.2.2 Limits . 12
4.2.1.2.3 Conformance . 12
4.2.1.3 Measured Bandwidth (B ) . 12
-20
4.2.1.3.1 Definition. 12
4.2.1.3.2 Limits . 12
4.2.1.3.3 Conformance . 12
4.2.1.4 Out of Band Emissions. 12
4.2.1.4.1 Definition. 12
4.2.1.4.2 Limits . 12
4.2.1.4.3 Conformance . 13
4.2.1.5 Spurious Emissions . 13
4.2.1.5.1 Definition. 13
4.2.1.5.2 Limits . 13
4.2.1.5.3 Conformance . 14
4.2.1.6 Stand-by Mode Emissions . 14
4.2.1.6.1 Definition. 14
4.2.1.6.2 Limits . 14
4.2.1.6.3 Conformance . 14
4.2.2 Receiver Requirements . 14
4.2.2.1 Receiver Sensitivity . 14
4.2.2.1.1 Definition. 14
4.2.2.1.2 Limits . 14
4.2.2.1.3 Conformance . 14
4.2.2.2 Receiver Selectivity . 14
4.2.2.2.1 Definition. 14
4.2.2.2.2 Limits . 15
4.2.2.2.3 Conformance . 15
4.2.2.3 Receiver Maximum input Level . 16
4.2.2.3.1 Definition. 16
4.2.2.3.2 Limits . 16
4.2.2.3.3 Conformance . 16
4.2.2.4 Receiver non-linearity . 16
4.2.2.4.1 Definition. 16
ETSI
4 ETSI EN 302 194-1 V2.1.1 (2026-06)
4.2.2.4.2 Limits . 16
4.2.2.4.3 Conformance . 16
5 Testing for compliance with technical requirements . 16
5.1 General Requirements . 16
5.2 Environmental conditions for testing . 17
5.3 Normal Test Conditions . 17
5.3.1 Normal temperature and humidity . 17
5.3.2 Normal test power supply . 17
5.3.2.1 DC test power supply . 17
5.4 Extreme test conditions . 17
5.4.1 Extreme temperature and humidity . 17
5.4.2 Extreme test power supply . 17
5.5 Radio test suites . 18
5.5.1 Transmitter test specification . 18
5.5.1.1 Occupied Bandwidth . 18
5.5.1.2 Transmitter Peak Power . 18
5.5.1.3 Measured Bandwidth (B ) . 19
-20
5.5.1.4 Out of Band Emissions. 19
5.5.1.5 Spurious Emissions . 19
5.5.1.6 Stand-by Mode Emissions . 20
5.5.1.7 Pulse Length . 20
5.5.1.8 Pulse Rise Time . 21
5.5.2 Receiver test specifications . 22
5.5.2.1 Receiver Sensitivity . 22
5.5.2.2 Receiver Selectivity . 22
5.5.2.3 Receiver Maximum input Level . 23
5.5.2.4 Receiver non-linearity . 24
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 26
Annex B (informative): Maximum measurement uncertainty . 28
Annex C (normative): Transmitter Pulse Power measurement set up . 29
Annex D (normative): Occupied Bandwidth and Measured Bandwidth (B ) measurement
-20
set up . 31
Annex E (normative): Out of Band Emissions, Spurious Emissions and Stand-by Mode
Emissions measurement set up . 33
Annex F (normative): Pulse Length and Pulse Rise Time measurement set up . 35
Annex G (normative): Receiver Sensitivity measurement setup . 37
Annex H (normative): Receiver Selectivity, Receiver Maximum input Level and Receiver
non-linearity measurement setup . 38
Annex I (normative): Calculation of the -40 dB Bandwidth . 40
Annex J (normative): Setting of B B , RBW and VBW for Occupied Bandwidth,
ref, m
Measured Bandwidth (B ), Out of Band Emissions, Spurious
-20
Emissions and Stand-by Emissions . 41
Annex K (normative): Out of Band Emissions, Spurious Emissions and Stand-by Mode
Emissions measurement procedure . 42
K.1 Measurement antenna position . 42
K.2 Correction for variable measurement antenna gain . 42
K.3 Measurement system calibration . 42
ETSI
5 ETSI EN 302 194-1 V2.1.1 (2026-06)
K.4 Measurement procedure . 42
Annex L (informative): Checklist . 43
Annex M (informative): Bibliography . 45
Annex N (informative): Change history . 46
History . 47

ETSI
6 ETSI EN 302 194-1 V2.1.1 (2026-06)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables (European Standard (EN), Technical Specification (TS),
Group Specification (GS) or ETSI Standard (ES)) may have been declared to ETSI. The declarations pertaining to these
essential IPRs, if any, are publicly available for ETSI members and non-members, and can be found in
ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI IPR
online database.
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its
Members. 3GPP™, LTE™ and 5G™ logo are trademarks of ETSI registered for the benefit of its Members and of the
3GPP Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of ®
the oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM).
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.1] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.2].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive and associated
EFTA regulations.
The present document is part 1 of a multi-part deliverable covering navigation radars used on inland waterways, as
identified below:
Part 1: "Magnetron Radars";
Part 2: "Solid State Radars".
ETSI
7 ETSI EN 302 194-1 V2.1.1 (2026-06)
National transposition dates
Date of adoption of this EN: 15 June 2026
Date of latest announcement of this EN (doa): 30 September 2026
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 March 2027
Date of withdrawal of any conflicting National Standard (dow): 31 March 2028

Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI
8 ETSI EN 302 194-1 V2.1.1 (2026-06)
1 Scope
The present document specifies technical characteristics and methods of measurements for magnetron-based inland
waterways navigational radars having the following characteristics:
• Transmitter peak power not exceeding 10 kW.
• Operating on a pulse modulated single, non-tuneable carrier frequency in the range specified in Table 1.
• At the transmitter output, a 4 port RF-circulator or equivalent is used.
• The antenna is passive, rotating and waveguide based.
• The radar display is an integral part of the equipment.
Table 1: Radio navigation service frequencies
Radio navigation service frequencies
Transmit 9 300 MHz to 9 500 MHz
Receive 9 300 MHz to 9 500 MHz

NOTE: The relationship between the present document and the essential requirements of article 3.2 of
Directive 2014/53/EU [i.2] is given in Annex A.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or non-
specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found in the
ETSI docbox.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long-term validity.
The following referenced documents are necessary for the application of the present document.
Not applicable.
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long-term validity.
The following referenced documents may be useful in implementing an ETSI deliverable or add to the reader's
understanding, but are not required for conformance to the present document.
[i.1] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of
Directive 2014/53/EU of the European Parliament and of the Council.
ETSI
9 ETSI EN 302 194-1 V2.1.1 (2026-06)
[i.2] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC.
[i.3] ITU Radio Regulations (2024).
[i.4] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted
emissions of radar systems".
[i.5] ETSI EG 203 336 (V1.2.1) (05-2020): "Guide for the selection of technical parameters for the
production of Harmonised Standards covering article 3.1(b) and article 3.2 of
Directive 2014/53/EU".
[i.6] ETSI EN 303 676 (V1.1.1) (07-2021): "Navigation radar used on inland waterways; operational,
functional and technical requirements".
[i.7] Recommendation ITU-R SM.1541-7 (09/2024): "Unwanted emissions in the Out of Band
domain".
[i.8] ERC Recommendation 74-01 (05/2022): "Unwanted emissions in the spurious domain".
[i.9] ECC Recommendation (02)05 (03/2012): "Unwanted emissions".
[i.10] IEC 60945:2002/COR1:2008 including corrigendum 1 (04/2008): "Maritime navigation and
radiocommunication equipment and systems - General requirements - Methods of testing and
required test results".
[i.11] IEC 60153-2: 2016: "Hollow metallic waveguides. Part 2: Relevant specifications for ordinary
rectangular waveguides".
[i.12] Recommendation ITU-R SM.332-4 (07/1978): "Selectivity of receivers".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state producing the authorized emission
idle/stand-by state: state where the transmitter is available for traffic but is not in the active state
necessary bandwidth: width of the frequency band which is just sufficient to ensure the transmission of information at
the rate and with the quality required under specified conditions for a given class of emission
NOTE 1: This definition is taken from ITU Radio Regulation [i.3].
NOTE 2: For the radars covered by the present document the necessary bandwidth BN is considered to be B
-20
(20 dB bandwidth) as defined in Recommendation ITU-R SM.1541-7 [i.7].
occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the
mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission
NOTE 1: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value
of β/2 should be taken as 0,5 %.
NOTE 2: This definition is taken from ITU Radio Regulations [i.3], chapter I, 1.153.
NOTE 3: For primary radars β/2 equals 0,5 %.
ETSI
10 ETSI EN 302 194-1 V2.1.1 (2026-06)
Peak Envelope Power (PEP): average power supplied to the antenna transmission line by a transmitter during one
radio frequency cycle at the crest of the modulation envelope taken under normal operating conditions
NOTE: This definition is taken from ITU Radio Regulations [i.3], chapter I, 1.157.
product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,
magnetrons)
pulse length: time between the 50 % amplitude (voltage) points
pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude
(voltage)
radial resolution capability: shortest distance between two targets on the same bearing that can be discriminated
NOTE: This is defined in ETSI EN 303 676 [i.6], clause 5.2.2.5.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
B -20 dB bandwidth (in MHz)
-20
B -40 dB bandwidth (in MHz)
-40
B Intermediate frequency bandwidth
IF
B Measurement bandwidth
m
Bref Reference bandwidth
dB decibel
dBm Power ratio expressed in decibels (dB) with reference to one milli watt
dBpp Power ratio expressed in decibels (dB) with reference to peak power
f Image frequency
image
f Nominal frequency of the receiver
rx
fo Operating frequency (in MHz) of the magnetron
G Gain of the measurement system (dB)
s
-23
k Boltzmann's constant (1,38 × 10 J/K)
Pt Pulse power of transmission
t Time
tp Pulse length
tr Pulse rise time
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ANSI American National Standards Institute
dBi Gain in decibels relative to an isotropic antenna
DC Direct Current
ECC Electronic Communication Committee
EFTA European Free Trade Association
EN European Norm
ERC Electronic Radiocommunication Committee
EUT Equipment Under Test
FM Frequency Modulation
FTC Fast Time Constant
GHz GigaHertz
IEC International Electrotechnical Committee
IF Intermediate Frequency
IMD Intermodulation Distortion
ITU-R International Telecommunication Union - Radiocommunication Sector
kHz kiloHertz
kW kiloWatt
LO Local Oscillator
ETSI
11 ETSI EN 302 194-1 V2.1.1 (2026-06)
MBR Measurement Bandwidth Ratio
MHz MegaHertz
NA not applicable
OoB Out of Band
PEP Peak Envelope Power
RBW Resolution BandWidth
RF Radio Frequency
RML Receiver Maximal input Level
RWB Referenced BandWidth
STC Sensitive Time Control
SWT SWeep Time
VBW Video BandWidth
VRM Variable Range Marker
VSWR Voltage Standing Wave Ratio
4 Technical requirements specifications
4.1 Environmental profile
The technical requirements of the present document apply under the environmental profile for operation of the
equipment, which shall be in accordance with its intended use, but as a minimum, shall be that specified in the test
conditions contained in the present document. The equipment shall comply with all the technical requirements of the
present document at all times when operating within the boundary limits of the operational environmental profile
defined by its intended use.
4.2 Conformance requirements
4.2.1 Transmitter Requirements
4.2.1.1 Occupied Bandwidth
4.2.1.1.1 Definition
Occupied bandwidth is the width of a frequency band such that, below the lower and above the upper frequency limits,
the mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission as
defined in ITU Radio Regulations [i.3], chapter I, 1.153.
4.2.1.1.2 Limits
The occupied bandwidth with β/2 = 0,5 % shall be maintained wholly within the frequency range specified in Table 1.
NOTE: The value of β/2 = 0,5 % is taken from ITU Radio Regulations [i.3], chapter I, 1.153.
4.2.1.1.3 Conformance
The conformance tests are specified in clause 5.5.1.1.
4.2.1.2 Transmitter Peak Power
4.2.1.2.1 Definition
The transmitter peak power of a pulse radar is the peak value of the transmitter pulse power during the transmission
pulse.
ETSI
12 ETSI EN 302 194-1 V2.1.1 (2026-06)
4.2.1.2.2 Limits
The transmitter peak power shall not exceed 10 kW.
4.2.1.2.3 Conformance
The conformance tests are specified in clause 5.5.1.2.
4.2.1.3 Measured Bandwidth (B-20)
4.2.1.3.1 Definition
The measured -20 dB bandwidth (B ) is the measured bandwidth of the emission 20 dB below the measured peak
-20
power.
4.2.1.3.2 Limits
The measured -20 dB bandwidth (B ) of the signal shall be contained completely within the frequency range specified
-20
in Table 1.
4.2.1.3.3 Conformance
The conformance tests are specified in clause 5.5.1.3.
4.2.1.4 Out of Band Emissions
4.2.1.4.1 Definition
Out of Band (OoB) emissions refer to emissions in the region between calculated -40 dB bandwidth (B ) and the
-40
spurious region (see definition of spurious region in clause 4.2.1.5.1).
NOTE 1: The calculated B is defined in Annex I.
-40
NOTE 2: More information can be found in Recommendation ITU-R SM.1541-7 [i.7], Annex 8 (OoB domain
emission limits for primary radar systems), clause 3.
4.2.1.4.2 Limits
Out of Band (OoB) emissions shall not exceed the limits specified in Table 2 below.
NOTE: These limits are specified in Table 1 of Annex 2 of ECC Recommendation (02)05 [i.9].
The Out of Band mask rolls off at 30 dB/decade from the calculated B to the level specified for spurious emissions
-40
(see Figure 1 below).
Table 2: Limits for unwanted emissions in the OoB domain
Offset Limit Slope
Frequency x B dB dB/decade
-40 pp
0 to 0,5 0 0
0,5 -40 -∞
0,5 to 2,3 -40 to -60 -30
ETSI
13 ETSI EN 302 194-1 V2.1.1 (2026-06)

Figure 1: Out of Band emission limit masks [i.7]
4.2.1.4.3 Conformance
The conformance tests are specified in clause 5.5.1.4.
4.2.1.5 Spurious Emissions
4.2.1.5.1 Definition
Spurious emissions are unwanted emissions in the spurious domain. For active transmitters, the spurious domain is all
frequencies outside the OoB domain.
They include:
• harmonic emissions (whole multiples of the operating frequency);
• parasitic emissions (independent, accidentally);
• intermodulation (between oscillator and operation frequency or between oscillator and harmonics);
• emissions caused by frequency conversions.
4.2.1.5.2 Limits
The spurious emissions shall not exceed the limits specified in Table 3 for the frequency range defined in Table 3.
Table 3: Limits for spurious emissions
Lower band measurement Upper band measurement Limits
spurious emissions
30 MHz ≤ f < fo - 2,3 × B fo + 2,3 × B < f ≤ 26 GHz -43 - 10 × log(PEP) dB or -60 dB
-40 -40
(see note 1) (see notes 1 and 3) (see notes 2 and 3)
NOTE 1: The OoB boundaries are taken from ECC Recommendation (02)05 [i.9], Annex 2.
NOTE 2: Whichever is less stringent (attenuation (dB) below the power (PEP) supplied to the antenna port).
NOTE 3: These limits are specified in ERC Recommendation 74-01 [i.8], Annex 5 ("all other types of radar for
radiodetermination").
ETSI
14 ETSI EN 302 194-1 V2.1.1 (2026-06)
4.2.1.5.3 Conformance
The conformance tests are specified in clause 5.5.1.5.
4.2.1.6 Stand-by Mode Emissions
4.2.1.6.1 Definition
The idle/stand-by state is defined as the state where the transmitter is available for operation but is not in the active
state.
4.2.1.6.2 Limits
The stand-by mode emissions shall not exceed the limits specified in Table 4.
Table 4: Limits for stand-by mode emissions
Frequency Range Limits
30 MHz ≤ f ≤ 1 GHz -57 dBm
1 GHz < f ≤ 26 GHz -47 dBm
NOTE: The frequency range of measurements and the limits are specified in
ERC Recommendation 74-01 [i.8], Table 1 and Table 15 respectively.

4.2.1.6.3 Conformance
The conformance tests are specified in clause 5.5.1.6.
4.2.2 Receiver Requirements
4.2.2.1 Receiver Sensitivity
4.2.2.1.1 Definition
Receiver sensitivity is the ability to receive a specified wanted signal level while providing a pre-determined level of
performance.
NOTE: The definition of sensitivity is taken from ETSI EG 203 336 [i.5].
4.2.2.1.2 Limits
The equipment shall be capable to receive a wanted radar signal with a level of -80 dBm, resulting in an echo on the
radar display.
4.2.2.1.3 Conformance
The conformance tests are specified in clause 5.5.2.1.
4.2.2.2 Receiver Selectivity
4.2.2.2.1 Definition
The radar receiver selectivity is a measure of its ability to discriminate between a wanted signal to which the receiver is
tuned and unwanted signals.
NOTE 1: The definition of selectivity is taken from Recommendation ITU-R SM.332-4 [i.12].
NOTE 2: Radar receiver selectivity refers to effects measured within the linear range of the receiver to transpose at
its output the radar desired signal and to reject unwanted signals located outside the B bandwidth.
-40
ETSI
15 ETSI EN 302 194-1 V2.1.1 (2026-06)
NOTE 3: Unwanted signals inside the B bandwidth are not considered for the receiver selectivity since they fall
-40
into the desired frequency range for the reception of wanted signals.
4.2.2.2.2 Limits
With a wanted signal with a power level of -77 dBm and an unwanted signal as in Table 5 and illustrated in Figure 2,
the equipment's display shall not show a radar signal for the applied disturbing signal.
Table 5: Receiver selectivity mask
Frequency offset relative to fo by Test signal output level Slope
multiple of the B-40 bandwidth in dBm dB/decade
0 to 0,5 -80 -
0,5 -40 -∞
0,5 to 2,3 -40 to -20 -30
-20 0
2,3 to ∞
Figure 2: Receiver selectivity mask (not to scale)
The selectivity of a receiver tuned at an operating frequency fo shall be verified in the following frequency ranges:
fo - 2,3 × B - 800 MHz ≤ f ≤ fo - B / 2
-40 -40
fo + B / 2 ≤ f ≤ fo + 2,3 × B + 800 MHz
-40 -40
If the image frequencies, as calculated in formula (1) below, are not covered by the frequency ranges defined above, the
selectivity measurement shall also be done on the following frequency range:
f - B / 2 ≤ f ≤ f + B / 2
image -40 image -40
to cover the image frequencies susceptibility.
� +2� ,�� � > �
� �� �� �
� = � (1)
�����
� −2×� ,�� � < �
� �� �� �
4.2.2.2.3 Conformance
The conformance tests are specified in clause 5.5.2.2.
ETSI
16 ETSI EN 302 194-1 V2.1.1 (2026-06)
4.2.2.3 Receiver Maximum input Level
4.2.2.3.1 Definition
The Receiver Maximum Input Level is the input level of two input radar signals, resulting in two radar echoes on the
same bearing in a defined distance in accordance with the radial resolution capability of the EUT, such that the radar
echoes can be discriminated.
4.2.2.3.2 Limits
The Receiver Maximum Input Level with a radial resolution capability of 15 m shall be at least -35 dBm.
RML ≥ -35 dBm (2)
NOTE: The value for the radial resolution capability is taken from clause 5.2.2.5 of ETSI EN 303 676 [i.6].
4.2.2.3.3 Conformance
The conformance tests are specified in clause 5.5.2.3.
4.2.2.4 Receiver non-linearity
4.2.2.4.1 Definition
rd
Receiver non-linearity is a measure of the capability of the radar to suppress the 3 order Intermodulation Distortion
(IMD) product due to two unwanted signals with the specified levels.
NOTE 1: The unwanted signals at frequencies f and f are selected as follows:
1 2
f = 2 × f - f (3)
rx 1 2
rd
Equation 3 corresponds to the 3 order IMD.
NOTE 2: For the radars within the scope of the present document, only the third order IMD products are of primary
interest.
NOTE 3: Superheterodyne receivers as used by radars in the scope of the present document use mixers to convert
RF signals to an Intermediate Frequency (IF). Due to imperfection of a real-world mixer, it comes always
with a non-linear response, i.e. additional unwanted signals occur at the output of a mixer.
4.2.2.4.2 Limits
With the equipment's receiver tuned at a frequency f = 9 400 MHz and its display set up to suppress a wanted radar
rx
signal with a level of -35 dBm, two unwanted signals at frequencies f1 = 9 500 MHz and f2 = 9 600 MHz with a power
level of -35 dBm shall not cause any radar echo on the equipment's display.
4.2.2.4.3 Conformance
The conformance tests are specified in clause 5.5.2.4.
5 Testing for compliance with technical requirements
5.1 General Requirements
All tests shall be performed under normal test conditions specified in clause 5.3 unless stated otherwise.
ETSI
17 ETSI EN 302 194-1 V2.1.1 (2026-06)
5.2 Environmental conditions for testing
Tests defined in the present document shall be carried out at representative points within the boundary limits of the
operational environmental profile defined by its intended use, which, as a minimum, shall be that specified in the test
conditions contained in the present document.
Where technical performance varies subject to environmental conditions, tests shall be carried out under a sufficient
variety of environmental conditions as specified in the present document to give confidence of compliance for the
affected technical requirements.
5.3 Normal Test Conditions
5.3.1 Normal temperature and humidity
The temperature and humidity conditions for tests shall be a combination of temperature and humidity within the
following ranges:
a) temperature: +15 °C to +35 °C;
b) relative humidity: not exceeding 75 %.
The relative humidity shall be recorded in the test report.
NOTE: These values are defined in clause 5.2.1 of IEC 60945 [i.10].
5.3.2 Normal test power supply
5.3.2.1 DC test power supply
The normal test voltage shall be the nominal voltage as stated in the user documentation.
For the purpose of testing, the power source voltage shall be measured at the input terminals of the equipment.
During testing, the power source voltage deviation relative to the voltage level at the beginning of each test shall not
exceed 3 %.
NOTE: This voltage deviation is defined in clause 5.2.1 of IEC 60945 [i.10].
5.4 Extreme test conditions
5.4.1 Extreme temperature and humidity
The temperature and humidity conditions for extreme tests shall be a combination of nominal temperature and humidity
within the following ranges:
a) temperature: -25 °C to +55 °C;
b) relative humidity: not exceeding 93 %.
Measurements shall be made at least at the lowest and highest temperatures. The relative humidity shall be recorded in
the test report.
NOTE: These values are defined in clause 8.1, Table 3 of IEC 60945 [i.10].
5.4.2 Extreme test power supply
Extreme power voltage and frequency variations shall be as specified in Table 6.
ETSI
18 ETSI EN 302 194-1 V2.1.1 (2026-06)
Table 6: Extreme power supply voltage variations
Power supply Voltage variation %
DC +30
-10
NOTE: These values are defined in clause 5.2.2, Table 1 of IEC 60945 [i.10].
5.5 Radio test suites
5.5.1 Transmitter test specification
5.5.1.1 Occupied Bandwidth
The measurement setup shall be as described in Annex D and with the settings defined in Annex J.
The test shall be performed under both normal and extreme test conditions as defined in clause 5.3 and clause 5.4
respectively.
The measurement steps shall be as follows:
a) Set the EUT to a range of 1 200 m.
b) Adjust the signal attenuation to ensure that the signal power envelope is above the noise floor of the spectrum
analyser to avoid the noise signals on either side of the power envelope being included in
...

SLOVENSKI STANDARD
01-september-2026
Navigacijski radarji za uporabo na celinskih vodnih poteh - Harmonizirani standard
za dostop do radijskega spektra - 1. del: Magnetronski radarji
Navigation radars used on inland waterways - Harmonised Standard for access to radio
spectrum - Part 1: Magnetron Radars
Ta slovenski standard je istoveten z: ETSI EN 302 194-1 V2.1.1 (2026-06)
ICS:
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
47.020.70 Navigacijska in krmilna Navigation and control
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

HARMONISED EUROPEAN STANDARD
Navigation radars used on inland waterways;
Harmonised Standard for access to radio spectrum;
Part 1: Magnetron Radars
2 ETSI EN 302 194-1 V2.1.1 (2026-06)

Reference
DEN/ERM-TGMAR-540
Keywords
harmonised standard, maritime, navigation, radar,
radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from the
ETSI Search & Browse Standards application.
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format on ETSI deliver repository.
Users should be aware that the present document may be revised or have its status changed,
this information is available in the Milestones listing.
If you find errors in the present document, please send your comments to
the relevant service listed under Committee Support Staff.
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure (CVD) program.
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part of this document may be reproduced in any form, by any means and in any media, without the prior written
authorization of ETSI and except as expressly permitted below.
By way of exception and when the document is a normative deliverable (European Standard (EN),
Technical Specification (TS), Group Specification (GS) or ETSI Standard (ES)), ETSI authorizes to reproduce
and incorporate into products, services and technical documentation only those extracts (e.g. templates) that are strictly
necessary for the technical implementation of the normative deliverable, to ensure compliance with the latter.
Nothing in this notice shall be construed as limiting any mandatory exceptions to copyright provided by applicable law.

© ETSI 2026.
All rights reserved.
ETSI
3 ETSI EN 302 194-1 V2.1.1 (2026-06)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 9
3.1 Terms . 9
3.2 Symbols . 10
3.3 Abbreviations . 10
4 Technical requirements specifications . 11
4.1 Environmental profile . 11
4.2 Conformance requirements . 11
4.2.1 Transmitter Requirements . 11
4.2.1.1 Occupied Bandwidth . 11
4.2.1.1.1 Definition. 11
4.2.1.1.2 Limits . 11
4.2.1.1.3 Conformance . 11
4.2.1.2 Transmitter Peak Power . 11
4.2.1.2.1 Definition. 11
4.2.1.2.2 Limits . 12
4.2.1.2.3 Conformance . 12
4.2.1.3 Measured Bandwidth (B ) . 12
-20
4.2.1.3.1 Definition. 12
4.2.1.3.2 Limits . 12
4.2.1.3.3 Conformance . 12
4.2.1.4 Out of Band Emissions. 12
4.2.1.4.1 Definition. 12
4.2.1.4.2 Limits . 12
4.2.1.4.3 Conformance . 13
4.2.1.5 Spurious Emissions . 13
4.2.1.5.1 Definition. 13
4.2.1.5.2 Limits . 13
4.2.1.5.3 Conformance . 14
4.2.1.6 Stand-by Mode Emissions . 14
4.2.1.6.1 Definition. 14
4.2.1.6.2 Limits . 14
4.2.1.6.3 Conformance . 14
4.2.2 Receiver Requirements . 14
4.2.2.1 Receiver Sensitivity . 14
4.2.2.1.1 Definition. 14
4.2.2.1.2 Limits . 14
4.2.2.1.3 Conformance . 14
4.2.2.2 Receiver Selectivity . 14
4.2.2.2.1 Definition. 14
4.2.2.2.2 Limits . 15
4.2.2.2.3 Conformance . 15
4.2.2.3 Receiver Maximum input Level . 16
4.2.2.3.1 Definition. 16
4.2.2.3.2 Limits . 16
4.2.2.3.3 Conformance . 16
4.2.2.4 Receiver non-linearity . 16
4.2.2.4.1 Definition. 16
ETSI
4 ETSI EN 302 194-1 V2.1.1 (2026-06)
4.2.2.4.2 Limits . 16
4.2.2.4.3 Conformance . 16
5 Testing for compliance with technical requirements . 16
5.1 General Requirements . 16
5.2 Environmental conditions for testing . 17
5.3 Normal Test Conditions . 17
5.3.1 Normal temperature and humidity . 17
5.3.2 Normal test power supply . 17
5.3.2.1 DC test power supply . 17
5.4 Extreme test conditions . 17
5.4.1 Extreme temperature and humidity . 17
5.4.2 Extreme test power supply . 17
5.5 Radio test suites . 18
5.5.1 Transmitter test specification . 18
5.5.1.1 Occupied Bandwidth . 18
5.5.1.2 Transmitter Peak Power . 18
5.5.1.3 Measured Bandwidth (B ) . 19
-20
5.5.1.4 Out of Band Emissions. 19
5.5.1.5 Spurious Emissions . 19
5.5.1.6 Stand-by Mode Emissions . 20
5.5.1.7 Pulse Length . 20
5.5.1.8 Pulse Rise Time . 21
5.5.2 Receiver test specifications . 22
5.5.2.1 Receiver Sensitivity . 22
5.5.2.2 Receiver Selectivity . 22
5.5.2.3 Receiver Maximum input Level . 23
5.5.2.4 Receiver non-linearity . 24
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 26
Annex B (informative): Maximum measurement uncertainty . 28
Annex C (normative): Transmitter Pulse Power measurement set up . 29
Annex D (normative): Occupied Bandwidth and Measured Bandwidth (B ) measurement
-20
set up . 31
Annex E (normative): Out of Band Emissions, Spurious Emissions and Stand-by Mode
Emissions measurement set up . 33
Annex F (normative): Pulse Length and Pulse Rise Time measurement set up . 35
Annex G (normative): Receiver Sensitivity measurement setup . 37
Annex H (normative): Receiver Selectivity, Receiver Maximum input Level and Receiver
non-linearity measurement setup . 38
Annex I (normative): Calculation of the -40 dB Bandwidth . 40
Annex J (normative): Setting of B B , RBW and VBW for Occupied Bandwidth,
ref, m
Measured Bandwidth (B ), Out of Band Emissions, Spurious
-20
Emissions and Stand-by Emissions . 41
Annex K (normative): Out of Band Emissions, Spurious Emissions and Stand-by Mode
Emissions measurement procedure . 42
K.1 Measurement antenna position . 42
K.2 Correction for variable measurement antenna gain . 42
K.3 Measurement system calibration . 42
ETSI
5 ETSI EN 302 194-1 V2.1.1 (2026-06)
K.4 Measurement procedure . 42
Annex L (informative): Checklist . 43
Annex M (informative): Bibliography . 45
Annex N (informative): Change history . 46
History . 47

ETSI
6 ETSI EN 302 194-1 V2.1.1 (2026-06)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables (European Standard (EN), Technical Specification (TS),
Group Specification (GS) or ETSI Standard (ES)) may have been declared to ETSI. The declarations pertaining to these
essential IPRs, if any, are publicly available for ETSI members and non-members, and can be found in
ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI IPR
online database.
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its
Members. 3GPP™, LTE™ and 5G™ logo are trademarks of ETSI registered for the benefit of its Members and of the
3GPP Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of ®
the oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM).
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.1] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.2].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive and associated
EFTA regulations.
The present document is part 1 of a multi-part deliverable covering navigation radars used on inland waterways, as
identified below:
Part 1: "Magnetron Radars";
Part 2: "Solid State Radars".
ETSI
7 ETSI EN 302 194-1 V2.1.1 (2026-06)
National transposition dates
Date of adoption of this EN: 15 June 2026
Date of latest announcement of this EN (doa): 30 September 2026
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 March 2027
Date of withdrawal of any conflicting National Standard (dow): 31 March 2028

Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI
8 ETSI EN 302 194-1 V2.1.1 (2026-06)
1 Scope
The present document specifies technical characteristics and methods of measurements for magnetron-based inland
waterways navigational radars having the following characteristics:
• Transmitter peak power not exceeding 10 kW.
• Operating on a pulse modulated single, non-tuneable carrier frequency in the range specified in Table 1.
• At the transmitter output, a 4 port RF-circulator or equivalent is used.
• The antenna is passive, rotating and waveguide based.
• The radar display is an integral part of the equipment.
Table 1: Radio navigation service frequencies
Radio navigation service frequencies
Transmit 9 300 MHz to 9 500 MHz
Receive 9 300 MHz to 9 500 MHz

NOTE: The relationship between the present document and the essential requirements of article 3.2 of
Directive 2014/53/EU [i.2] is given in Annex A.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or non-
specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found in the
ETSI docbox.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long-term validity.
The following referenced documents are necessary for the application of the present document.
Not applicable.
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long-term validity.
The following referenced documents may be useful in implementing an ETSI deliverable or add to the reader's
understanding, but are not required for conformance to the present document.
[i.1] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of
Directive 2014/53/EU of the European Parliament and of the Council.
ETSI
9 ETSI EN 302 194-1 V2.1.1 (2026-06)
[i.2] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC.
[i.3] ITU Radio Regulations (2024).
[i.4] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted
emissions of radar systems".
[i.5] ETSI EG 203 336 (V1.2.1) (05-2020): "Guide for the selection of technical parameters for the
production of Harmonised Standards covering article 3.1(b) and article 3.2 of
Directive 2014/53/EU".
[i.6] ETSI EN 303 676 (V1.1.1) (07-2021): "Navigation radar used on inland waterways; operational,
functional and technical requirements".
[i.7] Recommendation ITU-R SM.1541-7 (09/2024): "Unwanted emissions in the Out of Band
domain".
[i.8] ERC Recommendation 74-01 (05/2022): "Unwanted emissions in the spurious domain".
[i.9] ECC Recommendation (02)05 (03/2012): "Unwanted emissions".
[i.10] IEC 60945:2002/COR1:2008 including corrigendum 1 (04/2008): "Maritime navigation and
radiocommunication equipment and systems - General requirements - Methods of testing and
required test results".
[i.11] IEC 60153-2: 2016: "Hollow metallic waveguides. Part 2: Relevant specifications for ordinary
rectangular waveguides".
[i.12] Recommendation ITU-R SM.332-4 (07/1978): "Selectivity of receivers".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state producing the authorized emission
idle/stand-by state: state where the transmitter is available for traffic but is not in the active state
necessary bandwidth: width of the frequency band which is just sufficient to ensure the transmission of information at
the rate and with the quality required under specified conditions for a given class of emission
NOTE 1: This definition is taken from ITU Radio Regulation [i.3].
NOTE 2: For the radars covered by the present document the necessary bandwidth BN is considered to be B
-20
(20 dB bandwidth) as defined in Recommendation ITU-R SM.1541-7 [i.7].
occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the
mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission
NOTE 1: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value
of β/2 should be taken as 0,5 %.
NOTE 2: This definition is taken from ITU Radio Regulations [i.3], chapter I, 1.153.
NOTE 3: For primary radars β/2 equals 0,5 %.
ETSI
10 ETSI EN 302 194-1 V2.1.1 (2026-06)
Peak Envelope Power (PEP): average power supplied to the antenna transmission line by a transmitter during one
radio frequency cycle at the crest of the modulation envelope taken under normal operating conditions
NOTE: This definition is taken from ITU Radio Regulations [i.3], chapter I, 1.157.
product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,
magnetrons)
pulse length: time between the 50 % amplitude (voltage) points
pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude
(voltage)
radial resolution capability: shortest distance between two targets on the same bearing that can be discriminated
NOTE: This is defined in ETSI EN 303 676 [i.6], clause 5.2.2.5.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
B -20 dB bandwidth (in MHz)
-20
B -40 dB bandwidth (in MHz)
-40
B Intermediate frequency bandwidth
IF
B Measurement bandwidth
m
Bref Reference bandwidth
dB decibel
dBm Power ratio expressed in decibels (dB) with reference to one milli watt
dBpp Power ratio expressed in decibels (dB) with reference to peak power
f Image frequency
image
f Nominal frequency of the receiver
rx
fo Operating frequency (in MHz) of the magnetron
G Gain of the measurement system (dB)
s
-23
k Boltzmann's constant (1,38 × 10 J/K)
Pt Pulse power of transmission
t Time
tp Pulse length
tr Pulse rise time
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ANSI American National Standards Institute
dBi Gain in decibels relative to an isotropic antenna
DC Direct Current
ECC Electronic Communication Committee
EFTA European Free Trade Association
EN European Norm
ERC Electronic Radiocommunication Committee
EUT Equipment Under Test
FM Frequency Modulation
FTC Fast Time Constant
GHz GigaHertz
IEC International Electrotechnical Committee
IF Intermediate Frequency
IMD Intermodulation Distortion
ITU-R International Telecommunication Union - Radiocommunication Sector
kHz kiloHertz
kW kiloWatt
LO Local Oscillator
ETSI
11 ETSI EN 302 194-1 V2.1.1 (2026-06)
MBR Measurement Bandwidth Ratio
MHz MegaHertz
NA not applicable
OoB Out of Band
PEP Peak Envelope Power
RBW Resolution BandWidth
RF Radio Frequency
RML Receiver Maximal input Level
RWB Referenced BandWidth
STC Sensitive Time Control
SWT SWeep Time
VBW Video BandWidth
VRM Variable Range Marker
VSWR Voltage Standing Wave Ratio
4 Technical requirements specifications
4.1 Environmental profile
The technical requirements of the present document apply under the environmental profile for operation of the
equipment, which shall be in accordance with its intended use, but as a minimum, shall be that specified in the test
conditions contained in the present document. The equipment shall comply with all the technical requirements of the
present document at all times when operating within the boundary limits of the operational environmental profile
defined by its intended use.
4.2 Conformance requirements
4.2.1 Transmitter Requirements
4.2.1.1 Occupied Bandwidth
4.2.1.1.1 Definition
Occupied bandwidth is the width of a frequency band such that, below the lower and above the upper frequency limits,
the mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission as
defined in ITU Radio Regulations [i.3], chapter I, 1.153.
4.2.1.1.2 Limits
The occupied bandwidth with β/2 = 0,5 % shall be maintained wholly within the frequency range specified in Table 1.
NOTE: The value of β/2 = 0,5 % is taken from ITU Radio Regulations [i.3], chapter I, 1.153.
4.2.1.1.3 Conformance
The conformance tests are specified in clause 5.5.1.1.
4.2.1.2 Transmitter Peak Power
4.2.1.2.1 Definition
The transmitter peak power of a pulse radar is the peak value of the transmitter pulse power during the transmission
pulse.
ETSI
12 ETSI EN 302 194-1 V2.1.1 (2026-06)
4.2.1.2.2 Limits
The transmitter peak power shall not exceed 10 kW.
4.2.1.2.3 Conformance
The conformance tests are specified in clause 5.5.1.2.
4.2.1.3 Measured Bandwidth (B-20)
4.2.1.3.1 Definition
The measured -20 dB bandwidth (B ) is the measured bandwidth of the emission 20 dB below the measured peak
-20
power.
4.2.1.3.2 Limits
The measured -20 dB bandwidth (B ) of the signal shall be contained completely within the frequency range specified
-20
in Table 1.
4.2.1.3.3 Conformance
The conformance tests are specified in clause 5.5.1.3.
4.2.1.4 Out of Band Emissions
4.2.1.4.1 Definition
Out of Band (OoB) emissions refer to emissions in the region between calculated -40 dB bandwidth (B ) and the
-40
spurious region (see definition of spurious region in clause 4.2.1.5.1).
NOTE 1: The calculated B is defined in Annex I.
-40
NOTE 2: More information can be found in Recommendation ITU-R SM.1541-7 [i.7], Annex 8 (OoB domain
emission limits for primary radar systems), clause 3.
4.2.1.4.2 Limits
Out of Band (OoB) emissions shall not exceed the limits specified in Table 2 below.
NOTE: These limits are specified in Table 1 of Annex 2 of ECC Recommendation (02)05 [i.9].
The Out of Band mask rolls off at 30 dB/decade from the calculated B to the level specified for spurious emissions
-40
(see Figure 1 below).
Table 2: Limits for unwanted emissions in the OoB domain
Offset Limit Slope
Frequency x B dB dB/decade
-40 pp
0 to 0,5 0 0
0,5 -40 -∞
0,5 to 2,3 -40 to -60 -30
ETSI
13 ETSI EN 302 194-1 V2.1.1 (2026-06)

Figure 1: Out of Band emission limit masks [i.7]
4.2.1.4.3 Conformance
The conformance tests are specified in clause 5.5.1.4.
4.2.1.5 Spurious Emissions
4.2.1.5.1 Definition
Spurious emissions are unwanted emissions in the spurious domain. For active transmitters, the spurious domain is all
frequencies outside the OoB domain.
They include:
• harmonic emissions (whole multiples of the operating frequency);
• parasitic emissions (independent, accidentally);
• intermodulation (between oscillator and operation frequency or between oscillator and harmonics);
• emissions caused by frequency conversions.
4.2.1.5.2 Limits
The spurious emissions shall not exceed the limits specified in Table 3 for the frequency range defined in Table 3.
Table 3: Limits for spurious emissions
Lower band measurement Upper band measurement Limits
spurious emissions
30 MHz ≤ f < fo - 2,3 × B fo + 2,3 × B < f ≤ 26 GHz -43 - 10 × log(PEP) dB or -60 dB
-40 -40
(see note 1) (see notes 1 and 3) (see notes 2 and 3)
NOTE 1: The OoB boundaries are taken from ECC Recommendation (02)05 [i.9], Annex 2.
NOTE 2: Whichever is less stringent (attenuation (dB) below the power (PEP) supplied to the antenna port).
NOTE 3: These limits are specified in ERC Recommendation 74-01 [i.8], Annex 5 ("all other types of radar for
radiodetermination").
ETSI
14 ETSI EN 302 194-1 V2.1.1 (2026-06)
4.2.1.5.3 Conformance
The conformance tests are specified in clause 5.5.1.5.
4.2.1.6 Stand-by Mode Emissions
4.2.1.6.1 Definition
The idle/stand-by state is defined as the state where the transmitter is available for operation but is not in the active
state.
4.2.1.6.2 Limits
The stand-by mode emissions shall not exceed the limits specified in Table 4.
Table 4: Limits for stand-by mode emissions
Frequency Range Limits
30 MHz ≤ f ≤ 1 GHz -57 dBm
1 GHz < f ≤ 26 GHz -47 dBm
NOTE: The frequency range of measurements and the limits are specified in
ERC Recommendation 74-01 [i.8], Table 1 and Table 15 respectively.

4.2.1.6.3 Conformance
The conformance tests are specified in clause 5.5.1.6.
4.2.2 Receiver Requirements
4.2.2.1 Receiver Sensitivity
4.2.2.1.1 Definition
Receiver sensitivity is the ability to receive a specified wanted signal level while providing a pre-determined level of
performance.
NOTE: The definition of sensitivity is taken from ETSI EG 203 336 [i.5].
4.2.2.1.2 Limits
The equipment shall be capable to receive a wanted radar signal with a level of -80 dBm, resulting in an echo on the
radar display.
4.2.2.1.3 Conformance
The conformance tests are specified in clause 5.5.2.1.
4.2.2.2 Receiver Selectivity
4.2.2.2.1 Definition
The radar receiver selectivity is a measure of its ability to discriminate between a wanted signal to which the receiver is
tuned and unwanted signals.
NOTE 1: The definition of selectivity is taken from Recommendation ITU-R SM.332-4 [i.12].
NOTE 2: Radar receiver selectivity refers to effects measured within the linear range of the receiver to transpose at
its output the radar desired signal and to reject unwanted signals located outside the B bandwidth.
-40
ETSI
15 ETSI EN 302 194-1 V2.1.1 (2026-06)
NOTE 3: Unwanted signals inside the B bandwidth are not considered for the receiver selectivity since they fall
-40
into the desired frequency range for the reception of wanted signals.
4.2.2.2.2 Limits
With a wanted signal with a power level of -77 dBm and an unwanted signal as in Table 5 and illustrated in Figure 2,
the equipment's display shall not show a radar signal for the applied disturbing signal.
Table 5: Receiver selectivity mask
Frequency offset relative to fo by Test signal output level Slope
multiple of the B-40 bandwidth in dBm dB/decade
0 to 0,5 -80 -
0,5 -40 -∞
0,5 to 2,3 -40 to -20 -30
-20 0
2,3 to ∞
Figure 2: Receiver selectivity mask (not to scale)
The selectivity of a receiver tuned at an operating frequency fo shall be verified in the following frequency ranges:
fo - 2,3 × B - 800 MHz ≤ f ≤ fo - B / 2
-40 -40
fo + B / 2 ≤ f ≤ fo + 2,3 × B + 800 MHz
-40 -40
If the image frequencies, as calculated in formula (1) below, are not covered by the frequency ranges defined above, the
selectivity measurement shall also be done on the following frequency range:
f - B / 2 ≤ f ≤ f + B / 2
image -40 image -40
to cover the image frequencies susceptibility.
� +2� ,�� � > �
� �� �� �
� = � (1)
�����
� −2×� ,�� � < �
� �� �� �
4.2.2.2.3 Conformance
The conformance tests are specified in clause 5.5.2.2.
ETSI
16 ETSI EN 302 194-1 V2.1.1 (2026-06)
4.2.2.3 Receiver Maximum input Level
4.2.2.3.1 Definition
The Receiver Maximum Input Level is the input level of two input radar signals, resulting in two radar echoes on the
same bearing in a defined distance in accordance with the radial resolution capability of the EUT, such that the radar
echoes can be discriminated.
4.2.2.3.2 Limits
The Receiver Maximum Input Level with a radial resolution capability of 15 m shall be at least -35 dBm.
RML ≥ -35 dBm (2)
NOTE: The value for the radial resolution capability is taken from clause 5.2.2.5 of ETSI EN 303 676 [i.6].
4.2.2.3.3 Conformance
The conformance tests are specified in clause 5.5.2.3.
4.2.2.4 Receiver non-linearity
4.2.2.4.1 Definition
rd
Receiver non-linearity is a measure of the capability of the radar to suppress the 3 order Intermodulation Distortion
(IMD) product due to two unwanted signals with the specified levels.
NOTE 1: The unwanted signals at frequencies f and f are selected as follows:
1 2
f = 2 × f - f (3)
rx 1 2
rd
Equation 3 corresponds to the 3 order IMD.
NOTE 2: For the radars within the scope of the present document, only the third order IMD products are of primary
interest.
NOTE 3: Superheterodyne receivers as used by radars in the scope of the present document use mixers to convert
RF signals to an Intermediate Frequency (IF). Due to imperfection of a real-world mixer, it comes always
with a non-linear response, i.e. additional unwanted signals occur at the output of a mixer.
4.2.2.4.2 Limits
With the equipment's receiver tuned at a frequency f = 9 400 MHz and its display set up to suppress a wanted radar
rx
signal with a level of -35 dBm, two unwanted signals at frequencies f1 = 9 500 MHz and f2 = 9 600 MHz with a power
level of -35 dBm shall not cause any radar echo on the equipment's display.
4.2.2.4.3 Conformance
The conformance tests are specified in clause 5.5.2.4.
5 Testing for compliance with technical requirements
5.1 General Requirements
All tests shall be performed under normal test conditions specified in clause 5.3 unless stated otherwise.
ETSI
17 ETSI EN 302 194-1 V2.1.1 (2026-06)
5.2 Environmental conditions for testing
Tests defined in the present document shall be carried out at representative points within the boundary limits of the
operational environmental profile defined by its intended use, which, as a minimum, shall be that specified in the test
conditions contained in the present document.
Where technical performance varies subject to environmental conditions, tests shall be carried out under a sufficient
variety of environmental conditions as specified in the present document to give confidence of compliance for the
affected technical requirements.
5.3 Normal Test Conditions
5.3.1 Normal temperature and humidity
The temperature and humidity conditions for tests shall be a combination of temperature and humidity within the
following ranges:
a) temperature: +15 °C to +35 °C;
b) relative humidity: not exceeding 75 %.
The relative humidity shall be recorded in the test report.
NOTE: These values are defined in clause 5.2.1 of IEC 60945 [i.10].
5.3.2 Normal test power supply
5.3.2.1 DC test power supply
The normal test voltage shall be the nominal voltage as stated in the user documentation.
For the purpose of testing, the power source voltage shall be measured at the input terminals of the equipment.
During testing, the power source voltage deviation relative to the voltage level at the beginning of each test shall not
exceed 3 %.
NOTE: This voltage deviation is defined in clause 5.2.1 of IEC 60945 [i.10].
5.4 Extreme test conditions
5.4.1 Extreme temperature and humidity
The temperature and
...