SIST EN 303 699 V1.2.1:2026

• Abstract:

  The present document specifies technical characteristics and methods for measurements for satellite communications Earth Stations (ES) with the following characteristics:; • The ES is designed for stationary operation.; • The ES is operating as part of a satellite network (e.g. star, mesh or point to point) used for the distribution and/or exchange of information.; • The transmit and receive frequencies are shown in Table 1.; • The ES transmits within the frequency range from 27,5 GHz to 29,1 GHz and 29,5 GHz to 30,0 GHz, which are bands allocated to the Fixed Satellite Services (FSS) (Earth-to-space) among other services.; • At the national level, terminals covered by the present document, might operate on a co-frequency basis, with stations of other FSS networks / systems or with stations of other services. The present document does not cover requirements for ensuring protection of such services.; • The ES receives within the range from 17,30 GHz to 20,20 GHz (FSS).; • The ES uses linear or circular polarization.; • The ES operates through non-geostationary satellites.; • The ES is designed for unattended operation and it does not address specifications or requirements for earth stations operating as gateways or master earth station.; • The ES is controlled and monitored by a Network Control Facility (NCF). This function may be performed centrally (e.g. for a network of ESs with a central hub) or it could be performed within the ES for autonomous control. The NCF is outside the scope of the present document.; • The ES has one or more directive antennas that track satellites. The present document may also be applicable to the frequency bands 30,0 GHz to 31,0 GHz (Earth-to-space) and 20,2 GHz to 21,2 GHz (space-to-Earth) subject to national regulation.; The present document applies to the ES including its ancillary equipment and its various telecommunication ports, and when operated within the boundary limits of the operational environmental profile as defined by the intended use of the ES. NOTE: The relationship between the present document and essential requirements of article 3.2 of Directive 2014/53/EU [i.1] is given in annex A.

• Status: Published
• Public Enquiry End Date: 27-Sep-2026
• Publication Date: 05-Oct-2026
• ICS: 33.060.30 - Radio relay and fixed satellite communications systems
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 05-Oct-2026
• Due Date: 10-Dec-2026
• Completion Date: 06-Oct-2026
• Ref Project: ETSI EN 303 699 V1.2.1 (2026-10) - Satellite Earth Stations and Systems (SES); Fixed earth stations communicating with non-geostationary satellite systems in the 20 GHz and 30 GHz FSS bands; Harmonised Standard for access to radio spectrum

SIST EN 303 699 V1.2.1:2026 is the Slovenian adoption of ETSI EN 303 699 V1.2.1, a harmonised European standard from ETSI for fixed earth stations that communicate with non-geostationary satellite systems in the 20 GHz and 30 GHz FSS bands. It specifies technical characteristics and measurement methods for access to radio spectrum, so manufacturers, test labs, and compliance teams can assess emissions, pointing, control functions, and receiver performance for these earth stations.

What does SIST EN 303 699 V1.2.1:2026 specify?

SIST EN 303 699 V1.2.1:2026 specifies the technical characteristics and measurement methods for stationary satellite communications Earth Stations (ES) operating with non-geostationary satellites in Fixed Satellite Service (FSS) bands. It is written for unattended earth stations that use one or more directive antennas, are controlled by a Network Control Facility (NCF), and operate within the intended environmental profile.

The scope covers transmit and receive operation in the stated FSS bands and applies to the ES, its ancillary equipment, and its telecommunication ports. It also notes cases that are outside the intended focus, such as gateway or master earth stations, and it does not cover protection requirements for co-frequency stations of other networks or services.

The document is organized into six main clauses and nine annexes:

• Clause 1: Scope
• Clause 2: References
• Clause 3: Terms, symbols and abbreviations
• Clause 4: Technical requirements specifications
• Clause 5: Testing for compliance with technical requirements
• Clause 6: Test methods for all aspects of the ES

Annex	What it covers
Annex A	Relationship between the standard and the essential requirements of Directive 2014/53/EU
Annex B	Linear Polarization Alignment Error Calculation
Annex C	Radiated measurement
Annex D	Conducted measurements
Annex E	RF Cables
Annex F	RF Waveguides
Annex G	Measurement equipment
Annex H	Bibliography
Annex I	Change history

What are the key requirements of SIST EN 303 699 V1.2.1:2026?

SIST EN 303 699 V1.2.1:2026 focuses on spectrum-related behaviour that matters in real deployments: emissions outside the wanted band, antenna pointing, response to network control, and receiver resilience to interference. In practice, this means an ES has to behave predictably both when it is transmitting and when it is being commanded or monitored by the network.

Operating conditions and test selection

Clause 4.1 ties the requirements to the operational environmental profile, the intended operational configuration, and the EIRP for networks of ESs. Clause 5 then requires testing at representative points within that profile and with the configurations that produce the highest unintentional emissions. For a buyer or integrator, that means the test sample must reflect the real installation, antenna options, and power settings used in service.

Off-axis and on-axis spurious radiation

Clause 4.2.1 sets the off-axis spurious radiation limits, and Clause 4.2.2 covers on-axis spurious radiation. The requirements distinguish between radio states such as “Carrier-on”, “Carrier-off”, and “Emissions disabled”, and they also take multi-carrier operation into account through the factor K. In practice, the ES must keep unwanted radiation under control not only while carrying user traffic, but also during idle and disabled states.

Clause 6.2 and Clause 6.3 describe how these emissions are measured, including radiated and conducted methods, use of substitution techniques, and checks at different transmit frequencies across the operating range. That matters because the standard does not rely on a single spot check - it expects worst-case behaviour to be found and measured.

Antenna pointing and polarization

Clause 4.2.6 addresses antenna pointing accuracy, including on-axis polarization angle specification. Clause 6.7 covers polarization angle alignment capability, and Annex B gives a calculation for linear polarization alignment error. In practice, the ES has to point accurately enough to support satellite tracking and maintain the intended polarization relationship, otherwise it can lose link quality or increase interference.

Cessation of emissions and control logic

Clause 4.2.7 defines when the ES shall cease emissions, how it interacts with the NCF, and how it must react to fault conditions. Clause 4.2.8 defines the ES states and the Control and Monitoring Functions (CMFs), including “Non valid”, “Initial phase”, “Transmission enabled”, and “Transmission disabled”. The standard requires the ES to stop transmitting when commanded or when autonomous conditions call for it, and it sets timing expectations for leaving the transmitting state.

For users, this is the part that governs fail-safe behaviour. It is the section that keeps an ES from continuing to radiate when control is lost, a fault is detected, or the system is in a state where transmission is not allowed.

Receive-side selectivity and rejection

Clause 4.2.9 addresses the receive antenna off-axis gain pattern, while Clauses 4.2.10 to 4.2.12 cover blocking performance, adjacent signal selectivity, and image frequency rejection. These receiver checks matter because an ES must remain usable in crowded spectrum and reject interfering signals from nearby channels, off-axis directions, or image responses. Where image frequency rejection applies, the document also explains the test approach for receivers using a local oscillator (LO) for down conversion.

Test methods and laboratory set-up

Clause 6 gives the practical methods for verification, and Annex C and Annex D provide the measurement environments for radiated and conducted tests. The standard includes site arrangements, substitution methods, antenna alignment, receiver settings, and uncertainty-related guidance so results are repeatable. For a test lab, this is the part that turns the requirements into a test plan.

What terms does SIST EN 303 699 V1.2.1:2026 define?

• Network Control Facility (NCF) - The set of functional entities that monitor and control the correct operation of the ES, and possibly the whole network.
• Control and Monitoring Functions (CMFs) - The ES state and control logic used to prevent unwanted transmissions and manage transitions between operating states.
• Equivalent Isotropically Radiated Power (EIRP) - The radiated power measure used throughout the standard to describe transmit output and spurious emissions.
• Control Channel (CC) - The channel by which an ES receives control information from the NCF.
• Response Channel (RC) - The channel by which an ES sends monitoring information to the NCF.
• Nominated bandwidth - The transmit bandwidth chosen for the intended use, centered on the transmit frequency and wide enough to include the relevant spectral content.
• Spurious radiation - Any radiation outside the nominated bandwidth.
• Transmission disabled state - The radio state in which the ES is not authorized to transmit by the NCF.

Who uses SIST EN 303 699 V1.2.1:2026?

SIST EN 303 699 V1.2.1:2026 is used by manufacturers of fixed earth stations, antenna suppliers, satellite network operators, test laboratories, and regulatory or certification teams. Engineers use it to design and verify emissions, pointing, and control behaviour. Quality managers and buyers use it to check whether a product and its test evidence match the intended NGSO FSS application.

It is especially relevant for teams working with stationary, unattended ESs that are controlled through an NCF and track non-geostationary satellites. It is also relevant when the equipment includes ancillary equipment, telecommunication ports, and antenna arrangements that affect RF performance.

What changed in SIST EN 303 699 V1.2.1:2026 from the previous edition?

The change history records the path to this version through multiple review stages, including review of requirements as per RED, updates to annexes, updates to bibliography references, editorial corrections, and changes to the preferred test site and OATS references. It also records the progression from earlier publication status to V1.2.0 and then V1.2.1.

Which standards are used with SIST EN 303 699 V1.2.1:2026?

The following normative and companion documents are named in the standard:

• CISPR 16-1-1:2019 - Provides radio disturbance and immunity measuring apparatus requirements used for emission measurements.
• CISPR 16-1-4:2025 - Provides antennas and test sites for radiated disturbance measurements.
• CISPR 32:2015/AMD1:2019 - Provides emission requirements for multimedia equipment, used as part of the measurement framework.
• IEC 60153 (all parts) - Provides dimensions and bands for hollow metallic waveguides, relevant to millimetre-wave set-ups.
• ETSI TR 100 028 (all parts) - Provides uncertainty guidance for measurements of mobile radio equipment characteristics.
• ETSI EG 203 336 (V1.1.1) - Gives guidance for selecting technical parameters for harmonised standards under Directive 2014/53/EU.
• ETSI TR 102 273 (all parts) (V1.2.1) - Supports radiated methods of measurement and associated uncertainty evaluation.
• ANSI C63.5 (2017) - Provides antenna calibration guidance for radiated emission measurements.

What does the SIST EN 303 699 V1.2.1:2026 document contain?

The document contains frequency-band definitions, emissions masks, ES state definitions, and tables that link requirements to Directive 2014/53/EU. It also includes state transition diagrams, measurement arrangements, and step-by-step procedures for radiated and conducted testing.

Its figures and annexes support practical work such as spurious emission measurements, antenna gain measurement, antenna pointing verification, cessation-of-emission checks, and receiver rejection tests. Annex C and Annex D are especially important for laboratories because they define the test-site arrangements and the conducted measurement approach used to support compliance assessments.

Draft ETSI EN 303 699 V1.2.0 (2026-07)

HARMONISED EUROPEAN STANDARD
Satellite Earth Stations and Systems (SES);
Fixed earth stations communicating with non-geostationary
satellite systems in the 20 GHz and 30 GHz FSS bands;
Harmonised Standard for access to radio spectrum

2 Draft ETSI EN 303 699 V1.2.0 (2026-07)

Reference
REN/SES-00462
Keywords
antenna, earth station, FSS, harmonised standard,
non-GSO, regulation, satellite

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ETSI
3 Draft ETSI EN 303 699 V1.2.0 (2026-07)
Contents
Intellectual Property Rights . 7
Foreword . 7
Modal verbs terminology . 8
1 Scope . 9
2 References . 10
2.1 Normative references . 10
2.2 Informative references . 10
3 Definition of terms, symbols and abbreviations . 11
3.1 Terms . 11
3.2 Symbols . 13
3.3 Abbreviations . 13
4 Technical requirements specifications . 14
4.1 General . 14
4.1.1 Environmental profile . 14
4.1.2 Operational configurations . 14
4.1.3 EIRP for networks of ESs . 14
Aggregate
4.1.4 Void . 15
4.1.5 Void . 15
4.1.6 Void . 15
4.1.7 Peak pointing accuracy . 15
4.2 Conformance requirements . 15
4.2.1 Off-axis spurious radiation . 15
4.2.1.1 Justification . 15
4.2.1.2 Specification. 15
4.2.1.3 Conformance tests . 16
4.2.2 On-axis spurious radiation . 16
4.2.2.1 Justification . 16
4.2.2.2 Specification. 16
4.2.2.2.1 "Carrier-on" radio state . 16
4.2.2.2.2 "Carrier-off" and "Emissions disabled" radio states . 17
4.2.2.3 Conformance tests . 17
4.2.3 Void . 17
4.2.4 Void . 17
4.2.5 Carrier suppression . 17
4.2.5.1 Justification . 17
4.2.5.2 Specification. 17
4.2.5.3 Conformance tests . 17
4.2.6 Antenna pointing accuracy . 18
4.2.6.1 Purpose . 18
4.2.6.2 Pointing accuracy specification . 18
4.2.6.3 On-axis polarization angle specification . 18
4.2.6.4 Conformance tests . 18
4.2.7 Cessation of emissions . 18
4.2.7.1 Justification . 18
4.2.7.2 Specification. 18
4.2.7.2.1 Specification 1: Mode of cessation of emissions . 18
4.2.7.2.2 Specification 2: Conditions under which the ES shall cease emissions. 19
4.2.7.2.3 Specification 3: Cessation of emissions . 19
4.2.7.2.4 Specification 4: Fault conditions . 19
4.2.7.3 Conformance tests . 19
4.2.8 Control and Monitoring Functions (CMFs) . 20
4.2.8.1 ES States . 20
4.2.8.1.1 General . 20
4.2.8.1.2 CMF state diagram . 21
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4 Draft ETSI EN 303 699 V1.2.0 (2026-07)
4.2.8.2 Processor monitoring . 22
4.2.8.2.1 Justification . 22
4.2.8.2.2 Specification . 22
4.2.8.2.3 Conformance tests . 22
4.2.8.3 Transmit subsystem monitoring . 23
4.2.8.3.1 Justification . 23
4.2.8.3.2 Specification . 23
4.2.8.3.3 Conformance tests . 23
4.2.8.4 Power-on/Reset . 23
4.2.8.4.1 Justification . 23
4.2.8.4.2 Specification . 23
4.2.8.4.3 Conformance tests . 23
4.2.8.5 Control Channel (CC) and Response Channel (RC) . 23
4.2.8.5.1 Justification . 23
4.2.8.5.2 Specification . 23
4.2.8.5.3 Conformance tests . 24
4.2.8.6 Network control commands . 24
4.2.8.6.1 Justification . 24
4.2.8.6.2 Specification . 24
4.2.8.6.3 Conformance tests . 25
4.2.8.7 Initial burst transmission . 25
4.2.8.7.1 Justification . 25
4.2.8.7.2 Specification . 25
4.2.8.7.3 Conformance tests . 25
4.2.8.8 Inhibition of transmissions . 25
4.2.8.8.1 Justification . 25
4.2.8.8.2 Specification . 25
4.2.8.8.3 Conformance tests . 26
4.2.9 Receive antenna off-axis gain pattern . 26
4.2.9.1 Justification . 26
4.2.9.2 Specification for ES without beam forming and without interference mitigation techniques . 26
4.2.9.3 Conformance tests . 26
4.2.10 Blocking performance . 27
4.2.10.1 Justification . 27
4.2.10.2 Specification. 27
4.2.10.3 Conformance tests . 27
4.2.11 Adjacent Signal Selectivity . 27
4.2.11.1 Justification . 27
4.2.11.2 Specification. 27
4.2.11.3 Conformance tests . 27
4.2.12 Image frequency rejection . 28
4.2.12.1 Justification . 28
4.2.12.2 Specification. 28
4.2.12.3 Conformance tests . 28
5 Testing for compliance with technical requirements . 28
5.1 Environmental conditions for testing . 28
5.2 Presentation of equipment for testing purposes . 28
5.3 Choice of model for testing . 28
6 Test methods for all aspects of the ES. 29
6.1 General . 29
6.1.1 General requirements . 29
6.2 Off-axis spurious radiation . 29
6.2.1 General . 29
6.2.2 Test method . 29
6.2.2.1 General . 29
6.2.2.2 Multi-carrier operation . 29
6.2.3 Measurements up to 1 000 MHz . 30
6.2.3.1 Test site . 30
6.2.3.2 Measuring receivers . 30
6.2.3.3 Procedure . 30
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5 Draft ETSI EN 303 699 V1.2.0 (2026-07)
6.2.4 Measurements above 1 000 MHz . 31
6.2.4.1 General . 31
6.2.4.2 Identification of the significant frequencies of spurious radiation . 31
6.2.4.2.1 Test site. 31
6.2.4.2.2 Procedure . 31
6.2.4.3 Measurement of radiated power levels of identified spurious radiation . 32
6.2.4.3.1 Test site. 32
6.2.4.3.2 Procedure . 32
6.2.4.4 Measurement of conducted spurious radiation at the antenna flange . 33
6.2.4.4.1 Test site. 33
6.2.4.4.2 Procedure . 34
6.3 On-axis spurious radiation . 34
6.3.1 Test method . 34
6.3.1.1 General . 34
6.3.1.2 Test site . 34
6.3.1.3 Method of measurement . 34
6.3.1.3.1 General . 34
6.3.1.3.2 Method of measurement at the antenna flange . 35
6.3.1.3.3 Method of measurement for an EUT with antenna . 37
6.4 Void . 38
6.5 Carrier suppression . 38
6.5.1 General . 38
6.5.2 Test method . 38
6.6 Antenna pointing . 38
6.6.1 General . 38
6.6.2 Test method . 39
6.7 Polarization angle alignment capability . 39
6.7.1 General . 39
6.7.2 Test site . 40
6.7.3 Procedure . 40
6.8 Cessation of emissions of the ES . 41
6.8.1 General . 41
6.8.2 Test Method . 41
6.8.2.1 Required documentation . 41
6.8.2.2 Cessation of emissions from the "Transmission enabled" state . 41
6.8.2.3 Cessation of emission from the "Transmission disabled" state . 41
6.8.2.4 Cessation of emission from the "Initial Phase" state . 42
6.8.2.4.1 EUTs transmitting initial bursts . 42
6.8.2.4.2 EUTs not transmitting initial bursts . 42
6.8.2.5 "Single action" means of cessation of emissions. 42
6.8.2.6 Fault conditions . 43
6.9 Control and monitoring functions . 43
6.9.1 General . 43
6.9.2 Test arrangement . 43
6.9.3 Processor monitoring- Test method . 44
6.9.4 Transmit subsystem monitoring-Test method . 44
6.9.5 Power-on/Reset-Test method . 44
6.9.6 Control Channel and Response Channel -Test method . 45
6.9.7 Network Control commands-Test method . 45
6.9.8 Initial burst transmission-Test method . 47
6.9.9 Inhibition of transmission-Test method . 47
6.10 Receive EUT antenna off-axis gain pattern . 47
6.10.0 General . 47
6.10.1 Test method . 47
6.10.1.1 Test site . 47
6.10.1.2 Method of measurement . 48
6.10.1.3 Computation . 48
6.11 Blocking performance . 48
6.11.1 General . 48
6.11.2 Test method . 49
6.12 Adjacent Signal Selectivity . 50
6.12.1 Test method . 50
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6 Draft ETSI EN 303 699 V1.2.0 (2026-07)
6.13 Image frequency rejection . 51
Annex A (normative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 52
Annex B (informative): Linear Polarization Alignment Error Calculation . 55
Annex C (normative): Radiated measurement . 56
C.1 Test sites and general arrangements for measurements involving the use of radiated fields . 56
C.1.1 General . 56
C.1.2 Anechoic Chamber . 56
C.1.3 Anechoic Chamber with a conductive ground plane . 57
C.1.4 Open Area Test Site (OATS) . 58
C.1.5 Minimum requirements for test sites for measurements above 18 GHz . 59
C.1.6 Test antenna . 59
C.1.7 Substitution antenna . 60
C.1.8 Measuring antenna . 60
C.2 Guidance on the use of radiation test sites . 60
C.2.1 General . 60
C.2.2 Verification of the test site . 60
C.2.3 Preparation of the EUT . 60
C.2.4 Power supplies to the EUT . 60
C.2.5 Range length . 61
C.2.6 Site preparation . 61
C.3 Coupling of signals . 62
C.3.1 General . 62
C.4 Standard test methods . 62
C.4.1 General . 62
C.4.2 Calibrated setup . 62
C.4.3 Substitution method . 63
Annex D (normative): Conducted measurements . 64
Annex E (informative): RF Cables . 65
Annex F (informative): RF Waveguides . 66
Annex G (informative): Measurement equipment . 67
G.1 Maximum measurement uncertainty . 67
G.2 Measuring receiver . 67
Annex H (informative): Bibliography . 69
Annex I (informative): Change history . 70
History . 71

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7 Draft ETSI EN 303 699 V1.2.0 (2026-07)
Intellectual Property Rights
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Foreword
This draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee Satellite Earth
Stations and Systems (SES), 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.
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
8 Draft ETSI EN 303 699 V1.2.0 (2026-07)
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
9 Draft ETSI EN 303 699 V1.2.0 (2026-07)
1 Scope
The present document specifies technical characteristics and methods for measurements for satellite communications
Earth Stations (ES) with the following characteristics:
• The ES is designed for stationary operation.
• The ES is operating as part of a satellite network (e.g. star, mesh or point to point) used for the distribution
and/or exchange of information.
• The transmit and receive frequencies are shown in Table 1.
Table 1: Frequency bands
Frequency Bands/frequencies
Transmit (Earth-to-space) 1 27,5 GHz to 29,1 GHz
Transmit (Earth-to-space) 2 29,5 GHz to 30,0 GHz
Receive (space-to-Earth) 17,3 GHz to 20,2 GHz

• The ES transmits within the frequency range from 27,5 GHz to 29,1 GHz and 29,5 GHz to 30,0 GHz, which
are bands allocated to the Fixed Satellite Services (FSS) (Earth-to-space) among other services.
• At the national level, terminals covered by the present document, might operate on a co-frequency basis, with
stations of other FSS networks / systems or with stations of other services. The present document does not
cover requirements for ensuring protection of such services.
• The ES receives within the range from 17,30 GHz to 20,20 GHz (FSS).
• The ES uses linear or circular polarization.
• The ES operates through non-geostationary satellites.
• The ES is designed for unattended operation and it does not address specifications or requirements for earth
stations operating as gateways or master earth station.
• The ES is controlled and monitored by a Network Control Facility (NCF). This function may be performed
centrally (e.g. for a network of ESs with a central hub) or it could be performed within the ES for autonomous
control. The NCF is outside the scope of the present document.
• The ES has one or more directive antennas that track satellites.
The present document may also be applicable to the frequency bands 30,0 GHz to 31,0 GHz (Earth-to-space) and
20,2 GHz to 21,2 GHz (space-to-Earth) subject to national regulation.
The present document applies to the ES including its ancillary equipment and its various telecommunication ports, and
when operated within the boundary limits of the operational environmental profile as defined by the intended use of the
ES
NOTE: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.1] is given in annex A.
ETSI
10 Draft ETSI EN 303 699 V1.2.0 (2026-07)
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.
[1] Void.
[2] CISPR 16-1-1:2019: "Specification for radio disturbance and immunity measuring apparatus and
methods - Part 1-1: Radio disturbance and immunity measuring apparatus - Measuring apparatus".
[3]
...

HARMONISED EUROPEAN STANDARD
Satellite Earth Stations and Systems (SES);
Fixed earth stations communicating with non-geostationary
satellite systems in the 20 GHz and 30 GHz FSS bands;
Harmonised Standard for access to radio spectrum

2 ETSI EN 303 699 V1.2.1 (2026-10)

Reference
REN/SES-00462
Keywords
antenna, earth station, FSS, harmonised standard,
non-GSO, regulation, satellite

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 303 699 V1.2.1 (2026-10)
Contents
Intellectual Property Rights . 7
Foreword . 7
Modal verbs terminology . 8
1 Scope . 9
2 References . 10
2.1 Normative references . 10
2.2 Informative references . 10
3 Definition of terms, symbols and abbreviations . 11
3.1 Terms . 11
3.2 Symbols . 13
3.3 Abbreviations . 13
4 Technical requirements specifications . 14
4.1 General . 14
4.1.1 Environmental profile . 14
4.1.2 Operational configurations . 14
4.1.3 EIRP for networks of ESs . 14
Aggregate
4.1.4 Void . 15
4.1.5 Void . 15
4.1.6 Void . 15
4.1.7 Peak pointing accuracy . 15
4.2 Conformance requirements . 15
4.2.1 Off-axis spurious radiation . 15
4.2.1.1 Justification . 15
4.2.1.2 Specification. 15
4.2.1.3 Conformance tests . 16
4.2.2 On-axis spurious radiation . 16
4.2.2.1 Justification . 16
4.2.2.2 Specification. 16
4.2.2.2.1 "Carrier-on" radio state . 16
4.2.2.2.2 "Carrier-off" and "Emissions disabled" radio states . 17
4.2.2.3 Conformance tests . 17
4.2.3 Void . 17
4.2.4 Void . 17
4.2.5 Carrier suppression . 17
4.2.5.1 Justification . 17
4.2.5.2 Specification. 17
4.2.5.3 Conformance tests . 17
4.2.6 Antenna pointing accuracy . 18
4.2.6.1 Purpose . 18
4.2.6.2 Pointing accuracy specification . 18
4.2.6.3 On-axis polarization angle specification . 18
4.2.6.4 Conformance tests . 18
4.2.7 Cessation of emissions . 18
4.2.7.1 Justification . 18
4.2.7.2 Specification. 18
4.2.7.2.1 Specification 1: Mode of cessation of emissions . 18
4.2.7.2.2 Specification 2: Conditions under which the ES shall cease emissions. 19
4.2.7.2.3 Specification 3: Cessation of emissions . 19
4.2.7.2.4 Specification 4: Fault conditions . 19
4.2.7.3 Conformance tests . 19
4.2.8 Control and Monitoring Functions (CMFs) . 20
4.2.8.1 ES States . 20
4.2.8.1.1 General . 20
4.2.8.1.2 CMF state diagram . 21
ETSI
4 ETSI EN 303 699 V1.2.1 (2026-10)
4.2.8.2 Processor monitoring . 22
4.2.8.2.1 Justification . 22
4.2.8.2.2 Specification . 22
4.2.8.2.3 Conformance tests . 22
4.2.8.3 Transmit subsystem monitoring . 23
4.2.8.3.1 Justification . 23
4.2.8.3.2 Specification . 23
4.2.8.3.3 Conformance tests . 23
4.2.8.4 Power-on/Reset . 23
4.2.8.4.1 Justification . 23
4.2.8.4.2 Specification . 23
4.2.8.4.3 Conformance tests . 23
4.2.8.5 Control Channel (CC) and Response Channel (RC) . 23
4.2.8.5.1 Justification . 23
4.2.8.5.2 Specification . 23
4.2.8.5.3 Conformance tests . 24
4.2.8.6 Network control commands . 24
4.2.8.6.1 Justification . 24
4.2.8.6.2 Specification . 24
4.2.8.6.3 Conformance tests . 25
4.2.8.7 Initial burst transmission . 25
4.2.8.7.1 Justification . 25
4.2.8.7.2 Specification . 25
4.2.8.7.3 Conformance tests . 25
4.2.8.8 Inhibition of transmissions . 25
4.2.8.8.1 Justification . 25
4.2.8.8.2 Specification . 25
4.2.8.8.3 Conformance tests . 26
4.2.9 Receive antenna off-axis gain pattern . 26
4.2.9.1 Justification . 26
4.2.9.2 Specification for ES without beam forming and without interference mitigation techniques . 26
4.2.9.3 Conformance tests . 26
4.2.10 Blocking performance . 27
4.2.10.1 Justification . 27
4.2.10.2 Specification. 27
4.2.10.3 Conformance tests . 27
4.2.11 Adjacent Signal Selectivity . 27
4.2.11.1 Justification . 27
4.2.11.2 Specification. 27
4.2.11.3 Conformance tests . 27
4.2.12 Image frequency rejection . 28
4.2.12.1 Justification . 28
4.2.12.2 Specification. 28
4.2.12.3 Conformance tests . 28
5 Testing for compliance with technical requirements . 28
5.1 Environmental conditions for testing . 28
5.2 Presentation of equipment for testing purposes . 28
5.3 Choice of model for testing . 28
6 Test methods for all aspects of the ES. 29
6.1 General . 29
6.1.1 General requirements . 29
6.2 Off-axis spurious radiation . 29
6.2.1 General . 29
6.2.2 Test method . 29
6.2.2.1 General . 29
6.2.2.2 Multi-carrier operation . 29
6.2.3 Measurements up to 1 000 MHz . 30
6.2.3.1 Test site . 30
6.2.3.2 Measuring receivers . 30
6.2.3.3 Procedure . 30
ETSI
5 ETSI EN 303 699 V1.2.1 (2026-10)
6.2.4 Measurements above 1 000 MHz . 31
6.2.4.1 General . 31
6.2.4.2 Identification of the significant frequencies of spurious radiation . 31
6.2.4.2.1 Test site. 31
6.2.4.2.2 Procedure . 31
6.2.4.3 Measurement of radiated power levels of identified spurious radiation . 32
6.2.4.3.1 Test site. 32
6.2.4.3.2 Procedure . 32
6.2.4.4 Measurement of conducted spurious radiation at the antenna flange . 33
6.2.4.4.1 Test site. 33
6.2.4.4.2 Procedure . 34
6.3 On-axis spurious radiation . 34
6.3.1 Test method . 34
6.3.1.1 General . 34
6.3.1.2 Test site . 34
6.3.1.3 Method of measurement . 34
6.3.1.3.1 General . 34
6.3.1.3.2 Method of measurement at the antenna flange . 35
6.3.1.3.3 Method of measurement for an EUT with antenna . 37
6.4 Void . 38
6.5 Carrier suppression . 38
6.5.1 General . 38
6.5.2 Test method . 38
6.6 Antenna pointing . 38
6.6.1 General . 38
6.6.2 Test method . 39
6.7 Polarization angle alignment capability . 39
6.7.1 General . 39
6.7.2 Test site . 40
6.7.3 Procedure . 40
6.8 Cessation of emissions of the ES . 41
6.8.1 General . 41
6.8.2 Test Method . 41
6.8.2.1 Required documentation . 41
6.8.2.2 Cessation of emissions from the "Transmission enabled" state . 41
6.8.2.3 Cessation of emission from the "Transmission disabled" state . 41
6.8.2.4 Cessation of emission from the "Initial Phase" state . 42
6.8.2.4.1 EUTs transmitting initial bursts . 42
6.8.2.4.2 EUTs not transmitting initial bursts . 42
6.8.2.5 "Single action" means of cessation of emissions. 42
6.8.2.6 Fault conditions . 43
6.9 Control and monitoring functions . 43
6.9.1 General . 43
6.9.2 Test arrangement . 43
6.9.3 Processor monitoring- Test method . 44
6.9.4 Transmit subsystem monitoring-Test method . 44
6.9.5 Power-on/Reset-Test method . 44
6.9.6 Control Channel and Response Channel -Test method . 45
6.9.7 Network Control commands-Test method . 45
6.9.8 Initial burst transmission-Test method . 47
6.9.9 Inhibition of transmission-Test method . 47
6.10 Receive EUT antenna off-axis gain pattern . 47
6.10.0 General . 47
6.10.1 Test method . 47
6.10.1.1 Test site . 47
6.10.1.2 Method of measurement . 48
6.10.1.3 Computation . 48
6.11 Blocking performance . 48
6.11.1 General . 48
6.11.2 Test method . 49
6.12 Adjacent Signal Selectivity . 50
6.12.1 Test method . 50
ETSI
6 ETSI EN 303 699 V1.2.1 (2026-10)
6.13 Image frequency rejection . 51
Annex A (normative): Relationship between the present document and the essential requirements
of Directive 2014/53/EU . 52
Annex B (informative): Linear Polarization Alignment Error Calculation . 55
Annex C (normative): Radiated measurement . 56
C.1 Test sites and general arrangements for measurements involving the use of radiated fields . 56
C.1.1 General . 56
C.1.2 Anechoic Chamber . 56
C.1.3 Anechoic Chamber with a conductive ground plane . 57
C.1.4 Open Area Test Site (OATS) . 58
C.1.5 Minimum requirements for test sites for measurements above 18 GHz . 59
C.1.6 Test antenna . 59
C.1.7 Substitution antenna . 60
C.1.8 Measuring antenna . 60
C.2 Guidance on the use of radiation test sites . 60
C.2.1 General . 60
C.2.2 Verification of the test site . 60
C.2.3 Preparation of the EUT . 60
C.2.4 Power supplies to the EUT . 60
C.2.5 Range length . 61
C.2.6 Site preparation . 61
C.3 Coupling of signals . 62
C.3.1 General . 62
C.4 Standard test methods . 62
C.4.1 General . 62
C.4.2 Calibrated setup . 62
C.4.3 Substitution method . 63
Annex D (normative): Conducted measurements . 64
Annex E (informative): RF Cables . 65
Annex F (informative): RF Waveguides . 66
Annex G (informative): Measurement equipment . 67
G.1 Maximum measurement uncertainty . 67
G.2 Measuring receiver . 67
Annex H (informative): Bibliography . 69
Annex I (informative): Change history . 70
History . 71

ETSI
7 ETSI EN 303 699 V1.2.1 (2026-10)
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 Satellite Earth Stations
and Systems (SES).
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.
National transposition dates
Date of adoption of this EN: 28 September 2026
Date of latest announcement of this EN (doa): 31 December 2026
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 June 2027
Date of withdrawal of any conflicting National Standard (dow): 30 June 2027

ETSI
8 ETSI EN 303 699 V1.2.1 (2026-10)
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
9 ETSI EN 303 699 V1.2.1 (2026-10)
1 Scope
The present document specifies technical characteristics and methods for measurements for satellite communications
Earth Stations (ES) with the following characteristics:
• The ES is designed for stationary operation.
• The ES is operating as part of a satellite network (e.g. star, mesh or point to point) used for the distribution
and/or exchange of information.
• The transmit and receive frequencies are shown in Table 1.
Table 1: Frequency bands
Frequency Bands/frequencies
Transmit (Earth-to-space) 1 27,5 GHz to 29,1 GHz
Transmit (Earth-to-space) 2 29,5 GHz to 30,0 GHz
Receive (space-to-Earth) 17,3 GHz to 20,2 GHz

• The ES transmits within the frequency range from 27,5 GHz to 29,1 GHz and 29,5 GHz to 30,0 GHz, which
are bands allocated to the Fixed Satellite Services (FSS) (Earth-to-space) among other services.
• At the national level, terminals covered by the present document, might operate on a co-frequency basis, with
stations of other FSS networks / systems or with stations of other services. The present document does not
cover requirements for ensuring protection of such services.
• The ES receives within the range from 17,30 GHz to 20,20 GHz (FSS).
• The ES uses linear or circular polarization.
• The ES operates through non-geostationary satellites.
• The ES is designed for unattended operation and it does not address specifications or requirements for earth
stations operating as gateways or master earth station.
• The ES is controlled and monitored by a Network Control Facility (NCF). This function may be performed
centrally (e.g. for a network of ESs with a central hub) or it could be performed within the ES for autonomous
control. The NCF is outside the scope of the present document.
• The ES has one or more directive antennas that track satellites.
The present document may also be applicable to the frequency bands 30,0 GHz to 31,0 GHz (Earth-to-space) and
20,2 GHz to 21,2 GHz (space-to-Earth) subject to national regulation.
The present document applies to the ES including its ancillary equipment and its various telecommunication ports, and
when operated within the boundary limits of the operational environmental profile as defined by the intended use of the
ES.
NOTE: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.1] is given in annex A.
ETSI
10 ETSI EN 303 699 V1.2.1 (2026-10)
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.
[1] Void.
[2] CISPR 16-1-1:2019: "Specification for radio disturbance and immunity measuring apparatus and
methods - Part 1-1: Radio disturbance and immunity measuring apparatus - Measuring apparatus".
[3] CISPR 16-1-4:2025: "Specification for radio disturbance and immunity measuring apparatus and
methods -
...

SLOVENSKI STANDARD
01-december-2026
Satelitske zemeljske postaje in sistemi (SES) - Fiksne zemeljske postaje, ki
komunicirajo z negeostacionarnimi satelitskimi sistemi FSS v pasovih 20 GHz in
30 GHz - Harmonizirani standard za dostop do radijskega spektra
Satellite Earth Stations and Systems (SES) - Fixed earth stations communicating with
non-geostationary satellite systems in the 20 GHz and 30 GHz FSS bands - Harmonised
Standard for access to radio spectrum
Ta slovenski standard je istoveten z: ETSI EN 303 699 V1.2.1 (2026-10)
ICS:
33.060.30 Radiorelejni in fiksni satelitski Radio relay and fixed satellite
komunikacijski sistemi communications systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

HARMONISED EUROPEAN STANDARD
Satellite Earth Stations and Systems (SES);
Fixed earth stations communicating with non-geostationary
satellite systems in the 20 GHz and 30 GHz FSS bands;
Harmonised Standard for access to radio spectrum

2 ETSI EN 303 699 V1.2.1 (2026-10)

Reference
REN/SES-00462
Keywords
antenna, earth station, FSS, harmonised standard,
non-GSO, regulation, satellite

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 303 699 V1.2.1 (2026-10)
Contents
Intellectual Property Rights . 7
Foreword . 7
Modal verbs terminology . 8
1 Scope . 9
2 References . 10
2.1 Normative references . 10
2.2 Informative references . 10
3 Definition of terms, symbols and abbreviations . 11
3.1 Terms . 11
3.2 Symbols . 13
3.3 Abbreviations . 13
4 Technical requirements specifications . 14
4.1 General . 14
4.1.1 Environmental profile . 14
4.1.2 Operational configurations . 14
4.1.3 EIRP for networks of ESs . 14
Aggregate
4.1.4 Void . 15
4.1.5 Void . 15
4.1.6 Void . 15
4.1.7 Peak pointing accuracy . 15
4.2 Conformance requirements . 15
4.2.1 Off-axis spurious radiation . 15
4.2.1.1 Justification . 15
4.2.1.2 Specification. 15
4.2.1.3 Conformance tests . 16
4.2.2 On-axis spurious radiation . 16
4.2.2.1 Justification . 16
4.2.2.2 Specification. 16
4.2.2.2.1 "Carrier-on" radio state . 16
4.2.2.2.2 "Carrier-off" and "Emissions disabled" radio states . 17
4.2.2.3 Conformance tests . 17
4.2.3 Void . 17
4.2.4 Void . 17
4.2.5 Carrier suppression . 17
4.2.5.1 Justification . 17
4.2.5.2 Specification. 17
4.2.5.3 Conformance tests . 17
4.2.6 Antenna pointing accuracy . 18
4.2.6.1 Purpose . 18
4.2.6.2 Pointing accuracy specification . 18
4.2.6.3 On-axis polarization angle specification . 18
4.2.6.4 Conformance tests . 18
4.2.7 Cessation of emissions . 18
4.2.7.1 Justification . 18
4.2.7.2 Specification. 18
4.2.7.2.1 Specification 1: Mode of cessation of emissions . 18
4.2.7.2.2 Specification 2: Conditions under which the ES shall cease emissions. 19
4.2.7.2.3 Specification 3: Cessation of emissions . 19
4.2.7.2.4 Specification 4: Fault conditions . 19
4.2.7.3 Conformance tests . 19
4.2.8 Control and Monitoring Functions (CMFs) . 20
4.2.8.1 ES States . 20
4.2.8.1.1 General . 20
4.2.8.1.2 CMF state diagram . 21
ETSI
4 ETSI EN 303 699 V1.2.1 (2026-10)
4.2.8.2 Processor monitoring . 22
4.2.8.2.1 Justification . 22
4.2.8.2.2 Specification . 22
4.2.8.2.3 Conformance tests . 22
4.2.8.3 Transmit subsystem monitoring . 23
4.2.8.3.1 Justification . 23
4.2.8.3.2 Specification . 23
4.2.8.3.3 Conformance tests . 23
4.2.8.4 Power-on/Reset . 23
4.2.8.4.1 Justification . 23
4.2.8.4.2 Specification . 23
4.2.8.4.3 Conformance tests . 23
4.2.8.5 Control Channel (CC) and Response Channel (RC) . 23
4.2.8.5.1 Justification . 23
4.2.8.5.2 Specification . 23
4.2.8.5.3 Conformance tests . 24
4.2.8.6 Network control commands . 24
4.2.8.6.1 Justification . 24
4.2.8.6.2 Specification . 24
4.2.8.6.3 Conformance tests . 25
4.2.8.7 Initial burst transmission . 25
4.2.8.7.1 Justification . 25
4.2.8.7.2 Specification . 25
4.2.8.7.3 Conformance tests . 25
4.2.8.8 Inhibition of transmissions . 25
4.2.8.8.1 Justification . 25
4.2.8.8.2 Specification . 25
4.2.8.8.3 Conformance tests . 26
4.2.9 Receive antenna off-axis gain pattern . 26
4.2.9.1 Justification . 26
4.2.9.2 Specification for ES without beam forming and without interference mitigation techniques . 26
4.2.9.3 Conformance tests . 26
4.2.10 Blocking performance . 27
4.2.10.1 Justification . 27
4.2.10.2 Specification. 27
4.2.10.3 Conformance tests . 27
4.2.11 Adjacent Signal Selectivity . 27
4.2.11.1 Justification . 27
4.2.11.2 Specification. 27
4.2.11.3 Conformance tests . 27
4.2.12 Image frequency rejection . 28
4.2.12.1 Justification . 28
4.2.12.2 Specification. 28
4.2.12.3 Conformance tests . 28
5 Testing for compliance with technical requirements . 28
5.1 Environmental conditions for testing . 28
5.2 Presentation of equipment for testing purposes . 28
5.3 Choice of model for testing . 28
6 Test methods for all aspects of the ES. 29
6.1 General . 29
6.1.1 General requirements . 29
6.2 Off-axis spurious radiation . 29
6.2.1 General . 29
6.2.2 Test method . 29
6.2.2.1 General . 29
6.2.2.2 Multi-carrier operation . 29
6.2.3 Measurements up to 1 000 MHz . 30
6.2.3.1 Test site . 30
6.2.3.2 Measuring receivers . 30
6.2.3.3 Procedure . 30
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5 ETSI EN 303 699 V1.2.1 (2026-10)
6.2.4 Measurements above 1 000 MHz . 31
6.2.4.1 General . 31
6.2.4.2 Identification of the significant frequencies of spurious radiation . 31
6.2.4.2.1 Test site. 31
6.2.4.2.2 Procedure . 31
6.2.4.3 Measurement of radiated power levels of identified spurious radiation . 32
6.2.4.3.1 Test site. 32
6.2.4.3.2 Procedure . 32
6.2.4.4 Measurement of conducted spurious radiation at the antenna flange . 33
6.2.4.4.1 Test site. 33
6.2.4.4.2 Procedure . 34
6.3 On-axis spurious radiation . 34
6.3.1 Test method . 34
6.3.1.1 General . 34
6.3.1.2 Test site . 34
6.3.1.3 Method of measurement . 34
6.3.1.3.1 General . 34
6.3.1.3.2 Method of measurement at the antenna flange . 35
6.3.1.3.3 Method of measurement for an EUT with antenna . 37
6.4 Void . 38
6.5 Carrier suppression . 38
6.5.1 General . 38
6.5.2 Test method . 38
6.6 Antenna pointing . 38
6.6.1 General . 38
6.6.2 Test method . 39
6.7 Polarization angle alignment capability . 39
6.7.1 General . 39
6.7.2 Test site . 40
6.7.3 Procedure . 40
6.8 Cessation of emissions of the ES . 41
6.8.1 General . 41
6.8.2 Test Method . 41
6.8.2.1 Required documentation . 41
6.8.2.2 Cessation of emissions from the "Transmission enabled" state . 41
6.8.2.3 Cessation of emission from the "Transmission disabled" state . 41
6.8.2.4 Cessation of emission from the "Initial Phase" state . 42
6.8.2.4.1 EUTs transmitting initial bursts . 42
6.8.2.4.2 EUTs not transmitting initial bursts . 42
6.8.2.5 "Single action" means of cessation of emissions. 42
6.8.2.6 Fault conditions . 43
6.9 Control and monitoring functions . 43
6.9.1 General . 43
6.9.2 Test arrangement . 43
6.9.3 Processor monitoring- Test method . 44
6.9.4 Transmit subsystem monitoring-Test method . 44
6.9.5 Power-on/Reset-Test method . 44
6.9.6 Control Channel and Response Channel -Test method . 45
6.9.7 Network Control commands-Test method . 45
6.9.8 Initial burst transmission-Test method . 47
6.9.9 Inhibition of transmission-Test method . 47
6.10 Receive EUT antenna off-axis gain pattern . 47
6.10.0 General . 47
6.10.1 Test method . 47
6.10.1.1 Test site . 47
6.10.1.2 Method of measurement . 48
6.10.1.3 Computation . 48
6.11 Blocking performance . 48
6.11.1 General . 48
6.11.2 Test method . 49
6.12 Adjacent Signal Selectivity . 50
6.12.1 Test method . 50
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6 ETSI EN 303 699 V1.2.1 (2026-10)
6.13 Image frequency rejection . 51
Annex A (normative): Relationship between the present document and the essential requirements
of Directive 2014/53/EU . 52
Annex B (informative): Linear Polarization Alignment Error Calculation . 55
Annex C (normative): Radiated measurement . 56
C.1 Test sites and general arrangements for measurements involving the use of radiated fields . 56
C.1.1 General . 56
C.1.2 Anechoic Chamber . 56
C.1.3 Anechoic Chamber with a conductive ground plane . 57
C.1.4 Open Area Test Site (OATS) . 58
C.1.5 Minimum requirements for test sites for measurements above 18 GHz . 59
C.1.6 Test antenna . 59
C.1.7 Substitution antenna . 60
C.1.8 Measuring antenna . 60
C.2 Guidance on the use of radiation test sites . 60
C.2.1 General . 60
C.2.2 Verification of the test site . 60
C.2.3 Preparation of the EUT . 60
C.2.4 Power supplies to the EUT . 60
C.2.5 Range length . 61
C.2.6 Site preparation . 61
C.3 Coupling of signals . 62
C.3.1 General . 62
C.4 Standard test methods . 62
C.4.1 General . 62
C.4.2 Calibrated setup . 62
C.4.3 Substitution method . 63
Annex D (normative): Conducted measurements . 64
Annex E (informative): RF Cables . 65
Annex F (informative): RF Waveguides . 66
Annex G (informative): Measurement equipment . 67
G.1 Maximum measurement uncertainty . 67
G.2 Measuring receiver . 67
Annex H (informative): Bibliography . 69
Annex I (informative): Change history . 70
History . 71

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7 ETSI EN 303 699 V1.2.1 (2026-10)
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Foreword
This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Satellite Earth Stations
and Systems (SES).
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.
National transposition dates
Date of adoption of this EN: 28 September 2026
Date of latest announcement of this EN (doa): 31 December 2026
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 June 2027
Date of withdrawal of any conflicting National Standard (dow): 30 June 2027

ETSI
8 ETSI EN 303 699 V1.2.1 (2026-10)
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
9 ETSI EN 303 699 V1.2.1 (2026-10)
1 Scope
The present document specifies technical characteristics and methods for measurements for satellite communications
Earth Stations (ES) with the following characteristics:
• The ES is designed for stationary operation.
• The ES is operating as part of a satellite network (e.g. star, mesh or point to point) used for the distribution
and/or exchange of information.
• The transmit and receive frequencies are shown in Table 1.
Table 1: Frequency bands
Frequency Bands/frequencies
Transmit (Earth-to-space) 1 27,5 GHz to 29,1 GHz
Transmit (Earth-to-space) 2 29,5 GHz to 30,0 GHz
Receive (space-to-Earth) 17,3 GHz to 20,2 GHz

• The ES transmits within the frequency range from 27,5 GHz to 29,1 GHz and 29,5 GHz to 30,0 GHz, which
are bands allocated to the Fixed Satellite Services (FSS) (Earth-to-space) among other services.
• At the national level, terminals covered by the present document, might operate on a co-frequency basis, with
stations of other FSS networks / systems or with stations of other services. The present document does not
cover requirements for ensuring protection of such services.
• The ES receives within the range from 17,30 GHz to 20,20 GHz (FSS).
• The ES uses linear or circular polarization.
• The ES operates through non-geostationary satellites.
• The ES is designed for unattended operation and it does not address specifications or requirements for earth
stations operating as gateways or master earth station.
• The ES is controlled and monitored by a Network Control Facility (NCF). This function may be performed
centrally (e.g. for a network of ESs with a central hub) or it could be performed within the ES for autonomous
control. The NCF is outside the scope of the present document.
• The ES has one or more directive antennas that track satellites.
The present document may also be applicable to the frequency bands 30,0 GHz to 31,0 GHz (Earth-to-space) and
20,2 GHz to 21,2 GHz (space-to-Earth) subject to national regulation.
The present document applies to the ES including its ancillary equipment and its various telecommunication ports, and
when operated within the boundary limits of the operational environmental profile as defined by the intended use of the
ES.
NOTE: The re
...