SIST EN 301 843-8 V1.1.1:2026

ElectroMagnetic Compatibility (EMC) standard for marine radio equipment and services - Harmonised Standard for electromagnetic compatibility - Part 8: Specific conditions for radio beacons and locating devices

The present document covers the assessment of the following maritime radio beacons in respect of ElectroMagnetic Compatibility (EMC):
• Emergency Position Indicating Radio Beacons (EPIRBs) operating in the COSPAS-SARSAT satellite system in the UHF band 406,0 MHz to 406,1 MHz and in the maritime VHF band on frequencies 161,975 MHz (AIS1) and 162,025 MHz (AIS2).
• Personal Locating Beacons (PLBs) operating in the COSPAS-SARSAT satellite system in the UHF band 406,0 MHz to 406,1 MHz.
• Maritime Survivor Locating Devices (MSLDs) operating in the maritime VHF band on frequencies 156,525 MHz (CH 70), 161,975 MHz (AIS1) and 162,025 MHz (AIS2).
• Mobile Aids to Navigation (AtoN) operating on 161,975 MHz (AIS1) and 162,025 MHz (AIS2).
• Search And Rescue Transmitters (SARTs) operating on 161,975 MHz (AIS1) and 162,025 MHz (AIS2).
Any of the above devices may also include homing transmitters operating on 121,5 MHz and/or 243 MHz. These devices may operate stand alone or together with ancillary equipment as a system. Technical specifications related to the antenna port and emissions from the enclosure port of radio beacons are not included in the present document. Such technical specifications are found in the related product standards for the effective use of the radio spectrum. The present document specifies the applicable test conditions, performance assessment, and performance criteria for radio beacons and the associated ancillary equipment. NOTE: The relationship between the present document and essential requirements of article 3.1b of Directive 2014/53/EU [i.2] is given in annex A.

Standard elektromagnetne združljivosti (EMC) za pomorsko radijsko opremo in storitve - Harmonizirani standard za elektromagnetno združljivost - 8. del: Posebni pogoji za radijske javljalnike in lokatorje

Ta dokument zajema ocenjevanje naslednjih pomorskih radijskih svetilnikov v zvezi z elektromagnetno združljivostjo (EMC):
- Radijski svetilniki za označevanje položaja v sili (EPIRB), ki delujejo v satelitskem sistemu COSPAS-SARSAT v UHF pasu od 406,0 MHz do 406,1 MHz in v pomorskem VHF pasu na frekvencah 161,975 MHz (AIS1) in 162,025 MHz (AIS2).
- Osebni lokacijski svetilniki (PLB), ki delujejo v satelitskem sistemu COSPAS-SARSAT v UHF pasu od 406,0 MHz do 406,1 MHz.
- Naprave za lociranje preživelih na morju (MSLD), ki delujejo v pomorskem VHF pasu na frekvencah 156,525 MHz (CH 70), 161,975 MHz (AIS1) in 162,025 MHz (AIS2).
- Mobilni navigacijski pripomočki (AtoN), ki delujejo na 161,975 MHz (AIS1) in 162,025 MHz (AIS2).
- Oddajniki za iskanje in reševanje (SART), ki delujejo na 161,975 MHz (AIS1) in 162,025 MHz (AIS2).
Katerakoli od zgoraj navedenih naprav lahko vključuje tudi oddajnike za usmerjanje, ki delujejo na 121,5 MHz in/ali 243 MHz. Te naprave lahko delujejo samostojno ali skupaj z dodatno opremo kot sistem. Tehnične specifikacije, povezane z antenskim priključkom in emisijami iz ohišja radijskih svetilnikov, niso vključene v ta dokument. Takšne tehnične specifikacije so navedene v povezanih produktnih standardih za učinkovito uporabo radijskega spektra. Ta dokument določa veljavne pogoje testiranja, ocenjevanje zmogljivosti in merila zmogljivosti za radijske svetilnike in pripadajočo dodatno opremo.
OPOMBA: Razmerje med tem dokumentom in bistvenimi zahtevami člena 3.1b Direktive 2014/53/EU [i.2] je navedeno v prilogi A.

General Information

• Status: Published
• Public Enquiry End Date: 28-Feb-2026
• Publication Date: 08-Apr-2026
• ICS: 33.060.20 - Receiving and transmitting equipment
• ICS: 33.100.01 - Electromagnetic compatibility in general
• ICS: 47.020.70 - Navigation and control equipment
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 07-Apr-2026
• Due Date: 12-Jun-2026
• Completion Date: 09-Apr-2026
• Ref Project: ETSI EN 301 843-8 V1.1.1 (2026-03) - ElectroMagnetic Compatibility (EMC) standard for marine radio equipment and services; Harmonised Standard for electromagnetic compatibility; Part 8: Specific conditions for radio beacons and locating devices

Standards Content (Sample)

Draft ETSI EN 301 843-8 V1.0.0 (2025-12)

HARMONISED EUROPEAN STANDARD
ElectroMagnetic Compatibility (EMC) standard
for marine radio equipment and services;
Harmonised Standard for electromagnetic compatibility;
Part 8: Specific conditions for radio beacons and
locating devices
2 Draft ETSI EN 301 843-8 V1.0.0 (2025-12)
Reference
DEN/ERM-EMC-421
Keywords
EMC, EPIRB, harmonised standard, maritime,
radio, regulation
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 301 843-8 V1.0.0 (2025-12)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 8
3.3 Abbreviations . 8
4 General and operational requirements . 9
4.1 Environmental profile . 9
4.2 Arrangements for test signals . 9
4.2.0 General . 9
4.2.1 Arrangements for test signals at the input of the transmitter . 9
4.2.2 Arrangements for test signals at the output of the transmitter . 9
4.2.3 Arrangements for test signals at the input of the receiver . 9
4.2.3.1 GNSS test signals . 9
4.2.3.2 DSC test signals . 10
4.2.4 Arrangements for test signals at the output of the receiver . 10
4.2.5 Arrangements for testing transmitter and receiver together (as a system) . 10
4.3 Exclusion bands . 10
4.3.0 General . 10
4.3.1 Exclusion bands for receivers . 11
4.3.1.1 GNSS exclusion bands . 11
4.3.1.2 DSC Class M exclusion band . 11
4.3.2 Exclusion band for transmitters . 11
4.3.3 Exclusion band for EUTs employing broadband data transceivers . 11
4.3.3.1 The 2,4 GHz band . 11
4.3.3.2 5 GHz RLAN . 11
4.4 Intermediate frequency responses of receivers . 12
4.5 Test modulation . 12
5 Performance assessment . 12
5.1 General . 12
5.2 Equipment which can provide a continuous communication link . 12
5.3 Equipment which does not provide a continuous communication link . 12
5.4 Ancillary equipment . 12
5.5 Equipment classification . 13
6 Performance criteria . 13
6.0 General . 13
6.1 Performance criteria A for continuous phenomena applied to transmitters and receivers. 13
6.2 Performance criteria B for transient phenomena applied to transmitters and receivers . 13
6.3 Performance criteria C applied to power supply failure . 13
6.4 Performance check . 13
6.4.1 Transmitter . 13
6.4.1.1 General . 13
6.4.1.2 121,5 MHz and 243 MHz Homing transmitters . 14
6.4.1.3 DSC Class M . 14
6.4.1.4 AIS . 14
6.4.1.5 COSPAS-SARSAT . 14
6.4.2 Receiver . 14
ETSI
4 Draft ETSI EN 301 843-8 V1.0.0 (2025-12)
6.4.2.1 GNSS . 14
6.4.2.2 DSC . 14
7 Applicability overview . 14
7.0 General . 14
7.1 EMC Emission . 15
7.1.1 General conditions . 15
7.1.2 Special conditions . 15
7.2 Immunity . 15
7.2.0 Objective . 15
7.2.1 General conditions . 15
7.2.2 Special conditions . 16
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 17
Annex B (informative): Bibliography . 19
Annex C (informative): Change history . 20
History . 21

ETSI
5 Draft ETSI EN 301 843-8 V1.0.0 (2025-12)
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. ®
BLUETOOTH is a trademark registered and owned by Bluetooth SIG, Inc.
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 8 of a multi-part deliverable. Full details of the entire series can be found in part 1 [1].

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
6 Draft ETSI EN 301 843-8 V1.0.0 (2025-12)
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
7 Draft ETSI EN 301 843-8 V1.0.0 (2025-12)
1 Scope
The present document covers the assessment of the following maritime radio beacons in respect of ElectroMagnetic
Compatibility (EMC):
• Emergency Position Indicating Radio Beacons (EPIRBs) operating in the COSPAS-SARSAT satellite system
in the UHF band 406,0 MHz to 406,1 MHz and in the maritime VHF band on frequencies 161,975 MHz
(AIS1) and 162,025 MHz (AIS2).
• Personal Locating Beacons (PLBs) operating in the COSPAS-SARSAT satellite system in the UHF band
406,0 MHz to 406,1 MHz.
• Maritime Survivor Locating Devices (MSLDs) operating in the maritime VHF band on frequencies
156,525 MHz (CH 70), 161,975 MHz (AIS1) and 162,025 MHz (AIS2).
• Mobile Aids to Navigation (AtoN) operating on 161,975 MHz (AIS1) and 162,025 MHz (AIS2).
• Search And Rescue Transmitters (SARTs) operating on 161,975 MHz (AIS1) and 162,025 MHz (AIS2).
Any of the above devices may also include homing transmitters operating on 121,5 MHz and/or 243 MHz.
These devices may operate stand alone or together with ancillary equipment as a system.
Technical specifications related to the antenna port and emissions from the enclosure port of radio beacons are not
included in the present document. Such technical specifications are found in the related product standards for the
effective use of the radio spectrum.
The present document specifies the applicable test conditions, performance assessment, and performance criteria for
radio beacons and the associated ancillary equipment.
NOTE: The relationship between the present document and essential requirements of article 3.1b 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.
[1] ETSI EN 301 843-1 (V2.3.0): "ElectroMagnetic Compatibility (EMC) standard for marine radio
equipment and services; Part 1: Common technical requirements".
[2] ETSI EN 303 132 (V2.1.1) (2022-10): "Maritime VHF survivor locating devices employing
Digital Selective Calling (DSC Class M); Harmonised Standard for access to radio spectrum and
for features for emergency services".
[3] ETSI EN 300 338-6 (V1.3.1) (2024-03): "Technical characteristics and methods of measurement
for equipment for generation, transmission and reception of Digital Selective Calling (DSC) in the
maritime MF, MF/HF and/or VHF mobile service; Part 6: Class M DSC".
ETSI
8 Draft ETSI EN 301 843-8 V1.0.0 (2025-12)
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.
[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] Recommendation ITU-R M.1371-5: "Technical characteristics for an automatic identification
system using time division multiple access in the VHF maritime mobile frequency band".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the terms given in ETSI EN 301 843-1 [1] and the following apply:
activated EUT: EUT that is transmitting its distress
live sky: GNSS signal derived from live satellite signals
position fix: valid GNSS position has been acquired
primary battery: "s
...

HARMONISED EUROPEAN STANDARD
ElectroMagnetic Compatibility (EMC) standard
for marine radio equipment and services;
Harmonised Standard for electromagnetic compatibility;
Part 8: Specific conditions for radio beacons and
locating devices
2 ETSI EN 301 843-8 V1.1.1 (2026-03)

Reference
DEN/ERM-EMC-421
Keywords
EMC, EPIRB, harmonised standard, maritime,
radio, regulation
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 ETSI EN 301 843-8 V1.1.1 (2026-03)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 8
3.3 Abbreviations . 8
4 General and operational requirements . 9
4.1 Environmental profile . 9
4.2 Arrangements for test signals . 9
4.2.0 General . 9
4.2.1 Arrangements for test signals at the input of the transmitter . 9
4.2.2 Arrangements for test signals at the output of the transmitter . 9
4.2.3 Arrangements for test signals at the input of the receiver . 9
4.2.3.1 GNSS test signals . 9
4.2.3.2 DSC test signals . 10
4.2.4 Arrangements for test signals at the output of the receiver . 10
4.2.5 Arrangements for testing transmitter and receiver together (as a system) . 10
4.3 Exclusion bands . 10
4.3.0 General . 10
4.3.1 Exclusion bands for receivers . 11
4.3.1.1 GNSS exclusion bands . 11
4.3.1.2 DSC Class M exclusion band . 11
4.3.2 Exclusion band for transmitters . 11
4.3.3 Exclusion band for EUTs employing broadband data transceivers . 11
4.3.3.1 The 2,4 GHz band . 11
4.3.3.2 5 GHz RLAN . 11
4.4 Intermediate frequency responses of receivers . 12
4.5 Test modulation . 12
5 Performance assessment . 12
5.1 General . 12
5.2 Equipment which can provide a continuous communication link . 12
5.3 Equipment which does not provide a continuous communication link . 12
5.4 Ancillary equipment . 12
5.5 Equipment classification . 13
6 Performance criteria . 13
6.0 General . 13
6.1 Performance criteria A for continuous phenomena applied to transmitters and receivers. 13
6.2 Performance criteria B for transient phenomena applied to transmitters and receivers . 13
6.3 Performance criteria C applied to power supply failure . 13
6.4 Performance check . 13
6.4.1 Transmitter . 13
6.4.1.1 General . 13
6.4.1.2 121,5 MHz and 243 MHz Homing transmitters . 14
6.4.1.3 DSC Class M . 14
6.4.1.4 AIS . 14
6.4.1.5 COSPAS-SARSAT . 14
6.4.2 Receiver . 14
6.4.2.1 GNSS . 14
ETSI
4 ETSI EN 301 843-8 V1.1.1 (2026-03)
6.4.2.2 DSC . 14
7 Applicability overview . 14
7.0 General . 14
7.1 EMC Emission . 15
7.1.1 General conditions . 15
7.1.2 Special conditions . 15
7.2 Immunity . 15
7.2.0 Objective . 15
7.2.1 General conditions . 15
7.2.2 Special conditions . 16
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 17
Annex B (informative): Bibliography . 19
Annex C (informative): Change history . 20
History . 21

ETSI
5 ETSI EN 301 843-8 V1.1.1 (2026-03)
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. ®
BLUETOOTH is a trademark registered and owned by Bluetooth SIG, Inc.
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 8 of a multi-part deliverable. Full details of the entire series can be found in part 1 [1].

National transposition dates
Date of adoption of this EN: 18 March 2026
Date of latest announcement of this EN (doa): 30 June 2026
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 December 2026
Date of withdrawal of any conflicting National Standard (dow): 31 December 2027

ETSI
6 ETSI EN 301 843-8 V1.1.1 (2026-03)
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
7 ETSI EN 301 843-8 V1.1.1 (2026-03)
1 Scope
The present document covers the assessment of the following maritime radio beacons in respect of ElectroMagnetic
Compatibility (EMC):
• Emergency Position Indicating Radio Beacons (EPIRBs) operating in the COSPAS-SARSAT satellite system
in the UHF band 406,0 MHz to 406,1 MHz and in the maritime VHF band on frequencies 161,975 MHz
(AIS1) and 162,025 MHz (AIS2).
• Personal Locating Beacons (PLBs) operating in the COSPAS-SARSAT satellite system in the UHF band
406,0 MHz to 406,1 MHz.
• Maritime Survivor Locating Devices (MSLDs) operating in the maritime VHF band on frequencies
156,525 MHz (CH 70), 161,975 MHz (AIS1) and 162,025 MHz (AIS2).
• Mobile Aids to Navigation (AtoN) operating on 161,975 MHz (AIS1) and 162,025 MHz (AIS2).
• Search And Rescue Transmitters (SARTs) operating on 161,975 MHz (AIS1) and 162,025 MHz (AIS2).
Any of the above devices may also include homing transmitters operating on 121,5 MHz and/or 243 MHz.
These devices may operate stand alone or together with ancillary equipment as a system.
Technical specifications related to the antenna port and emissions from the enclosure port of radio beacons are not
included in the present document. Such technical specifications are found in the related product standards for the
effective use of the radio spectrum.
The present document specifies the applicable test conditions, performance assessment, and performance criteria for
radio beacons and the associated ancillary equipment.
NOTE: The relationship between the present document and essential requirements of article 3.1b 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.
[1] ETSI EN 301 843-1 (V2.3.0): "ElectroMagnetic Compatibility (EMC) standard for marine radio
equipment and services; Part 1: Common technical requirements".
[2] ETSI EN 303 132 (V2.1.1) (2022-10): "Maritime VHF survivor locating devices employing
Digital Selective Calling (DSC Class M); Harmonised Standard for access to radio spectrum and
for features for emergency services".
[3] ETSI EN 300 338-6 (V1.3.1) (2024-03): "Technical characteristics and methods of measurement
for equipment for generation, transmission and reception of Digital Selective Calling (DSC) in the
maritime MF, MF/HF and/or VHF mobile service; Part 6: Class M DSC".
ETSI
8 ETSI EN 301 843-8 V1.1.1 (2026-03)
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.
[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] Recommendation ITU-R M.1371-5: "Technical characteristics for an automatic identification
system using time division multiple access in the VHF maritime mobile frequency band".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the terms given in ETSI EN 301 843-1 [1] and the following apply:
activated EUT: EUT that is transmitting its distress
live sky: GNSS signal derived from live satellite signals
position fix: valid GNSS position has been acquired
primary battery: "single use" battery that cannot be recharged
armed: MSLD or PLB that has
...

SLOVENSKI STANDARD
01-maj-2026
Standard elektromagnetne združljivosti (EMC) za pomorsko radijsko opremo in
storitve - Harmonizirani standard za elektromagnetno združljivost - 8. del: Posebni
pogoji za radijske javljalnike in lokatorje
ElectroMagnetic Compatibility (EMC) standard for marine radio equipment and services -
Harmonised Standard for electromagnetic compatibility - Part 8: Specific conditions for
radio beacons and locating devices
Ta slovenski standard je istoveten z: ETSI EN 301 843-8 V1.1.1 (2026-03)
ICS:
33.060.20 Sprejemna in oddajna Receiving and transmitting
oprema equipment
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
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
ElectroMagnetic Compatibility (EMC) standard
for marine radio equipment and services;
Harmonised Standard for electromagnetic compatibility;
Part 8: Specific conditions for radio beacons and
locating devices
2 ETSI EN 301 843-8 V1.1.1 (2026-03)

Reference
DEN/ERM-EMC-421
Keywords
EMC, EPIRB, harmonised standard, maritime,
radio, regulation
ETSI
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All rights reserved.
ETSI
3 ETSI EN 301 843-8 V1.1.1 (2026-03)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 8
3.3 Abbreviations . 8
4 General and operational requirements . 9
4.1 Environmental profile . 9
4.2 Arrangements for test signals . 9
4.2.0 General . 9
4.2.1 Arrangements for test signals at the input of the transmitter . 9
4.2.2 Arrangements for test signals at the output of the transmitter . 9
4.2.3 Arrangements for test signals at the input of the receiver . 9
4.2.3.1 GNSS test signals . 9
4.2.3.2 DSC test signals . 10
4.2.4 Arrangements for test signals at the output of the receiver . 10
4.2.5 Arrangements for testing transmitter and receiver together (as a system) . 10
4.3 Exclusion bands . 10
4.3.0 General . 10
4.3.1 Exclusion bands for receivers . 11
4.3.1.1 GNSS exclusion bands . 11
4.3.1.2 DSC Class M exclusion band . 11
4.3.2 Exclusion band for transmitters . 11
4.3.3 Exclusion band for EUTs employing broadband data transceivers . 11
4.3.3.1 The 2,4 GHz band . 11
4.3.3.2 5 GHz RLAN . 11
4.4 Intermediate frequency responses of receivers . 12
4.5 Test modulation . 12
5 Performance assessment . 12
5.1 General . 12
5.2 Equipment which can provide a continuous communication link . 12
5.3 Equipment which does not provide a continuous communication link . 12
5.4 Ancillary equipment . 12
5.5 Equipment classification . 13
6 Performance criteria . 13
6.0 General . 13
6.1 Performance criteria A for continuous phenomena applied to transmitters and receivers. 13
6.2 Performance criteria B for transient phenomena applied to transmitters and receivers . 13
6.3 Performance criteria C applied to power supply failure . 13
6.4 Performance check . 13
6.4.1 Transmitter . 13
6.4.1.1 General . 13
6.4.1.2 121,5 MHz and 243 MHz Homing transmitters . 14
6.4.1.3 DSC Class M . 14
6.4.1.4 AIS . 14
6.4.1.5 COSPAS-SARSAT . 14
6.4.2 Receiver . 14
6.4.2.1 GNSS . 14
ETSI
4 ETSI EN 301 843-8 V1.1.1 (2026-03)
6.4.2.2 DSC . 14
7 Applicability overview . 14
7.0 General . 14
7.1 EMC Emission . 15
7.1.1 General conditions . 15
7.1.2 Special conditions . 15
7.2 Immunity . 15
7.2.0 Objective . 15
7.2.1 General conditions . 15
7.2.2 Special conditions . 16
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 17
Annex B (informative): Bibliography . 19
Annex C (informative): Change history . 20
History . 21

ETSI
5 ETSI EN 301 843-8 V1.1.1 (2026-03)
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. ®
BLUETOOTH is a trademark registered and owned by Bluetooth SIG, Inc.
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 8 of a multi-part deliverable. Full details of the entire series can be found in part 1 [1].

National transposition dates
Date of adoption of this EN: 18 March 2026
Date of latest announcement of this EN (doa): 30 June 2026
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 December 2026
Date of withdrawal of any conflicting National Standard (dow): 31 December 2027

ETSI
6 ETSI EN 301 843-8 V1.1.1 (2026-03)
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
7 ETSI EN 301 843-8 V1.1.1 (2026-03)
1 Scope
The present document covers the assessment of the following maritime radio beacons in respect of ElectroMagnetic
Compatibility (EMC):
• Emergency Position Indicating Radio Beacons (EPIRBs) operating in the COSPAS-SARSAT satellite system
in the UHF band 406,0 MHz to 406,1 MHz and in the maritime VHF band on frequencies 161,975 MHz
(AIS1) and 162,025 MHz (AIS2).
• Personal Locating Beacons (PLBs) operating in the COSPAS-SARSAT satellite system in the UHF band
406,0 MHz to 406,1 MHz.
• Maritime Survivor Locating Devices (MSLDs) operating in the maritime VHF band on frequencies
156,525 MHz (CH 70), 161,975 MHz (AIS1) and 162,025 MHz (AIS2).
• Mobile Aids to Navigation (AtoN) operating on 161,975 MHz (AIS1) and 162,025 MHz (AIS2).
• Search And Rescue Transmitters (SARTs) operating on 161,975 MHz (AIS1) and 162,025 MHz (AIS2).
Any of the above devices may also include homing transmitters operating on 121,5 MHz and/or 243 MHz.
These devices may operate stand alone or together with ancillary equipment as a system.
Technical specifications related to the antenna port and emissions from the enclosure port of radio beacons are not
included in the present document. Such technical specifications are found in the related product standards for the
effective use of the radio spectrum.
The present document specifies the applicable test conditions, performance assessment, and performance criteria for
radio beacons and the associated ancillary equipment.
NOTE: The relationship between the present document and essential requirements of article 3.1b 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.
[1] ETSI EN 301 843-1 (V2.3.0): "ElectroMagnetic Compatibility (EMC) standard for marine radio
equipment and services; Part 1: Common technical requirements".
[2] ETSI EN 303 132 (V2.1.1) (2022-10): "Maritime VHF survivor locating devices employing
Digital Selective Calling (DSC Class M); Harmonised Standard for access to radio spectrum and
for features for emergency services".
[3] ETSI EN 300 338-6 (V1.3.1) (2024-03): "Technical characteristics and methods of measurement
for equipment for generation, transmission and reception of Digital Selective Calling (DSC) in the
maritime MF, MF/HF and/or VHF mobile service; Part 6: Class M DSC".
ETSI
8 ETSI EN 301 843-8 V1.1.1 (2026-03)
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.
[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] Recommendation ITU-R M.1371-5: "Technical characteristics for an automatic identification
system using time division multiple access in the VHF
...