SIST EN 301 843-2 V2.3.1:2026

• Abstract:

  The present document covers the assessment of VHF radiotelephone transmitters and receivers for the maritime mobile service operating in the frequency range 156 MHz to 174 MHz, and ancillary equipment in respect of ElectroMagnetic Compatibility (EMC) intended to be used in a marine environment. Technical specifications related to the antenna port and emissions from the enclosure port of marine radiotelephone transmitters and receivers 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 VHF radiotelephone transmitters and receivers for the maritime mobile service, and 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.

• Status: Published
• Public Enquiry End Date: 28-Feb-2026
• Publication Date: 04-Oct-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: 28-Sep-2026
• Due Date: 03-Dec-2026
• Completion Date: 05-Oct-2026
• Ref Project: ETSI EN 301 843-2 V2.3.1 (2026-09) - ElectroMagnetic Compatibility (EMC) standard for marine radio equipment and services; Harmonised Standard for electromagnetic compatibility; Part 2: Specific conditions for VHF radiotelephone transmitters and receivers operating in the frequency range 156 MHz to 174 MHz

Overview

SIST EN 301 843-2 V2.3.1:2026 is the harmonised EMC standard for marine radio equipment and services covering VHF radiotelephone transmitters and receivers operating in the 156 MHz to 174 MHz frequency range. It is part of the ETSI marine radio EMC series and supports compliance with the essential requirements of Directive 2014/53/EU for radio equipment.

This standard is intended for marine mobile service equipment used in a marine environment, including associated ancillary equipment. It provides the technical basis for electromagnetic compatibility testing, performance assessment, and test conditions for maritime VHF radio products.

For manufacturers, test laboratories, and compliance teams, the document is especially relevant because it helps demonstrate presumption of conformity when cited in the Official Journal of the European Union. It also aligns with practical product evaluation for both mobile and portable marine radio equipment.

Key Topics

The standard focuses on EMC behavior under real operating conditions and defines how to test marine VHF equipment without compromising safety-related communication functions.

Main areas covered include:

• Test signal arrangements for transmitters and receivers
• Exclusion bands for receivers, GNSS-related functions, and transmitters
• Intermediate frequency response handling on receivers
• Test modulation using 1 000 Hz audio and 3 kHz frequency deviation
• Performance assessment for equipment with and without continuous communication links
• Performance criteria A, B, and C for immunity testing
• Performance checks for transmitter output, frequency error, and receiver SINAD

The standard also includes specific considerations for:

• CH16 / 156.8 MHz distress, urgency, and safety operation
• GNSS-integrated equipment
• Mobile and portable classifications
• System-level testing when ancillary equipment is supplied with the EUT

A notable practical point is that the document sets clear EMC requirements while excluding antenna-port and enclosure-port spectrum specifications, which are addressed in related product standards.

Applications

SIST EN 301 843-2 V2.3.1:2026 is used across the maritime communications value chain, including:

• Design and development of marine VHF radiotelephone equipment
• EMC compliance testing in accredited laboratories
• Product certification for EU market access
• Quality assurance for shipboard communication systems
• Regulatory conformity assessment for marine radio devices

It is particularly useful for equipment makers that need to verify immunity to RF fields, electrostatic discharge, fast transients, surges, and power supply variations. The standard also supports robust testing of receivers and transmitters when ancillary equipment is connected as a system.

Related Standards

This harmonised standard should be read together with ETSI EN 301 843-1 V2.3.1, which defines the common technical requirements for the marine radio EMC series.

Other relevant references include:

• Directive 2014/53/EU - Radio Equipment Directive
• Directive 2014/30/EU - EMC Directive, for broader electromagnetic compatibility context
• ETSI documents referenced for terms, symbols, abbreviations, and test framework

Together, these standards support marine radio EMC compliance, VHF radiotelephone interoperability, and safe operation in maritime environments.

Draft ETSI EN 301 843-2 V2.2.2 (2025-12)

HARMONISED EUROPEAN STANDARD
ElectroMagnetic Compatibility (EMC) standard
for marine radio equipment and services;
Harmonised Standard for electromagnetic compatibility;
Part 2: Specific conditions for VHF radiotelephone
transmitters and receivers operating in the frequency range
156 MHz to 174 MHz
2 Draft ETSI EN 301 843-2 V2.2.2 (2025-12)
Reference
REN/ERM-EMC-414
Keywords
EMC, harmonised standard, maritime, radio,
regulation, VHF
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 301 843-2 V2.2.2 (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 . 7
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 . 8
4.1 Environmental profile . 8
4.2 Arrangements for test signals . 8
4.2.0 General . 8
4.2.1 Arrangements for test signals at the input of the transmitter . 8
4.2.2 Arrangements for test signals at the output of the transmitter . 8
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 Marine communication test signals . 9
4.2.4 Arrangements for test signals at the output of the receiver . 9
4.2.5 Arrangements for testing transmitter and receiver together (as a system) . 9
4.3 Exclusion bands . 9
4.3.0 General . 9
4.3.1 Exclusion bands for receivers and receiver parts of transceivers . 10
4.3.1.1 GNSS exclusion bands . 10
4.3.1.2 Marine communication exclusion bands . 10
4.3.2 Exclusion band for transmitters . 10
4.4 Intermediate frequency responses on receivers . 10
4.5 Test modulation . 10
5 Performance assessment . 11
5.1 General . 11
5.2 Equipment which can provide a continuous communication link . 11
5.3 Equipment which does not provide a continuous communication link . 11
5.4 Ancillary equipment . 11
5.5 Equipment classification . 11
6 Performance criteria . 11
6.0 General . 11
6.1 Performance criteria A for continuous phenomena applied to transmitters and receivers. 11
6.2 Performance criteria B for transient phenomena applied to transmitters and receivers . 11
6.3 Performance criteria C applied to power supply failure . 12
6.4 Performance check . 12
6.4.1 Transmitter . 12
6.4.2 Receiver . 12
6.4.2.1 GNSS . 12
6.4.2.2 VHF Marine Receiver . 12
7 Applicability overview . 12
7.0 General . 12
7.1 EMC Emission . 13
7.1.1 General conditions . 13
7.1.2 Special conditions . 13
ETSI
4 Draft ETSI EN 301 843-2 V2.2.2 (2025-12)
7.2 Immunity . 13
7.2.0 Objective . 13
7.2.1 General conditions . 13
7.2.2 Special conditions . 14
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 15
Annex B (informative): Bibliography . 17
Annex C (informative): Change history . 18
History . 19

ETSI
5 Draft ETSI EN 301 843-2 V2.2.2 (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.
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 2 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 301 843-2 V2.2.2 (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 301 843-2 V2.2.2 (2025-12)
1 Scope
The present document covers the assessment of VHF radiotelephone transmitters and receivers for the maritime mobile
service operating in the frequency range 156 MHz to 174 MHz, and ancillary equipment in respect of ElectroMagnetic
Compatibility (EMC) intended to be used in a marine environment.
Technical specifications related to the antenna port and emissions from the enclosure port of marine radiotelephone
transmitters and receivers 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
VHF radiotelephone transmitters and receivers for the maritime mobile service, and 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".
2.2 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 S
...

Final draft ETSI EN 301 843-2 V2.3.0 (2026-07)

HARMONISED EUROPEAN STANDARD
ElectroMagnetic Compatibility (EMC) standard
for marine radio equipment and services;
Harmonised Standard for electromagnetic compatibility;
Part 2: Specific conditions for VHF radiotelephone
transmitters and receivers operating in the
frequency range 156 MHz to 174 MHz

2 Final draft ETSI EN 301 843-2 V2.3.0 (2026-07)

Reference
REN/ERM-EMC-414
Keywords
EMC, harmonised standard, maritime, radio,
regulation, VHF
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 Final draft ETSI EN 301 843-2 V2.3.0 (2026-07)
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 . 7
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 . 8
4.1 Environmental profile . 8
4.2 Arrangements for test signals . 8
4.2.0 General . 8
4.2.1 Arrangements for test signals at the input of the transmitter . 8
4.2.2 Arrangements for test signals at the output of the transmitter . 8
4.2.3 Arrangements for test signals at the input of the receiver . 8
4.2.3.1 GNSS test signals . 8
4.2.3.2 Marine communication test signals . 9
4.2.4 Arrangements for test signals at the output of the receiver . 9
4.2.5 Arrangements for testing transmitter and receiver together (as a system) . 9
4.3 Exclusion bands . 9
4.3.0 General . 9
4.3.1 Exclusion bands for receivers and receiver parts of transceivers . 9
4.3.1.1 GNSS exclusion bands . 9
4.3.1.2 Marine communication exclusion bands . 10
4.3.2 Exclusion band for transmitters . 10
4.4 Intermediate frequency responses on receivers . 10
4.5 Test modulation . 10
5 Performance assessment . 10
5.1 General . 10
5.2 Equipment which can provide a continuous communication link . 11
5.3 Equipment which does not provide a continuous communication link . 11
5.4 Ancillary equipment . 11
5.5 Equipment classification . 11
6 Performance criteria . 11
6.0 General . 11
6.1 Performance criteria A for continuous phenomena applied to transmitters and receivers. 11
6.2 Performance criteria B for transient phenomena applied to transmitters and receivers . 11
6.3 Performance criteria C applied to power supply failure . 11
6.4 Performance check . 12
6.4.1 Transmitter . 12
6.4.2 Receiver . 12
6.4.2.1 GNSS . 12
6.4.2.2 VHF Marine Receiver . 12
7 Applicability overview . 12
7.0 General . 12
7.1 EMC Emission . 13
7.1.1 General conditions . 13
7.1.2 Special conditions . 13
7.2 Immunity . 13
ETSI
4 Final draft ETSI EN 301 843-2 V2.3.0 (2026-07)
7.2.0 Objective . 13
7.2.1 General conditions . 13
7.2.2 Special conditions . 14
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 15
Annex B (informative): Bibliography . 17
Annex C (informative): Change history . 18
History . 19

ETSI
5 Final draft ETSI EN 301 843-2 V2.3.0 (2026-07)
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 final draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee
Electromagnetic compatibility and Radio spectrum Matters (ERM), and is now submitted for the Vote phase of the
ETSI Standardisation Request deliverable Approval Procedure (SRdAP).
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.1] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.2].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive and associated
EFTA regulations.
The present document is part 2 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 Final draft ETSI EN 301 843-2 V2.3.0 (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
7 Final draft ETSI EN 301 843-2 V2.3.0 (2026-07)
1 Scope
The present document covers the assessment of VHF radiotelephone transmitters and receivers for the maritime mobile
service operating in the frequency range 156 MHz to 174 MHz, and ancillary equipment in respect of ElectroMagnetic
Compatibility (EMC) intended to be used in a marine environment.
Technical specifications related to the antenna port and emissions from the enclosure port of marine radiotelephone
transmitters and receivers 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
VHF radiotelephone transmitters and receivers for the maritime mobile service, and 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 (V2.3.1): "ElectroMagnetic Compatibility (EMC) standard for marine radio
equipment and services; Part 1: Common technical requirements".
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 Parlia
...

HARMONISED EUROPEAN STANDARD
ElectroMagnetic Compatibility (EMC) standard
for marine radio equipment and services;
Harmonised Standard for electromagnetic compatibility;
Part 2: Specific conditions for VHF radiotelephone
transmitters and receivers operating in the
frequency range 156 MHz to 174 MHz

2 ETSI EN 301 843-2 V2.3.1 (2026-09)

Reference
REN/ERM-EMC-414
Keywords
EMC, harmonised standard, maritime, radio,
regulation, VHF
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 301 843-2 V2.3.1 (2026-09)
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 . 7
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 . 8
4.1 Environmental profile . 8
4.2 Arrangements for test signals . 8
4.2.0 General . 8
4.2.1 Arrangements for test signals at the input of the transmitter . 8
4.2.2 Arrangements for test signals at the output of the transmitter . 8
4.2.3 Arrangements for test signals at the input of the receiver . 8
4.2.3.1 GNSS test signals . 8
4.2.3.2 Marine communication test signals . 9
4.2.4 Arrangements for test signals at the output of the receiver . 9
4.2.5 Arrangements for testing transmitter and receiver together (as a system) . 9
4.3 Exclusion bands . 9
4.3.0 General . 9
4.3.1 Exclusion bands for receivers and receiver parts of transceivers . 9
4.3.1.1 GNSS exclusion bands . 9
4.3.1.2 Marine communication exclusion bands . 10
4.3.2 Exclusion band for transmitters . 10
4.4 Intermediate frequency responses on receivers . 10
4.5 Test modulation . 10
5 Performance assessment . 10
5.1 General . 10
5.2 Equipment which can provide a continuous communication link . 11
5.3 Equipment which does not provide a continuous communication link . 11
5.4 Ancillary equipment . 11
5.5 Equipment classification . 11
6 Performance criteria . 11
6.0 General . 11
6.1 Performance criteria A for continuous phenomena applied to transmitters and receivers. 11
6.2 Performance criteria B for transient phenomena applied to transmitters and receivers . 11
6.3 Performance criteria C applied to power supply failure . 11
6.4 Performance check . 12
6.4.1 Transmitter . 12
6.4.2 Receiver . 12
6.4.2.1 GNSS . 12
6.4.2.2 VHF Marine Receiver . 12
7 Applicability overview . 12
7.0 General . 12
7.1 EMC Emission . 13
7.1.1 General conditions . 13
7.1.2 Special conditions . 13
7.2 Immunity . 13
ETSI
4 ETSI EN 301 843-2 V2.3.1 (2026-09)
7.2.0 Objective . 13
7.2.1 General conditions . 13
7.2.2 Special conditions . 14
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 15
Annex B (informative): Bibliography . 17
Annex C (informative): Change history . 18
History . 19

ETSI
5 ETSI EN 301 843-2 V2.3.1 (2026-09)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables (European Standard (EN), Technical Specification (TS),
Group Specification (GS) or ETSI Standard (ES)) may have been declared to ETSI. The declarations pertaining to these
essential IPRs, if any, are publicly available for ETSI members and non-members, and can be found in
ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI IPR online database.
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its
Members. 3GPP™, LTE™ and 5G™ logo are trademarks of ETSI registered for the benefit of its Members and of the
3GPP Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of ®
the oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM).
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.1] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.2].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive and associated
EFTA regulations.
The present document is part 2 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: 14 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 2028

ETSI
6 ETSI EN 301 843-2 V2.3.1 (2026-09)
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 301 843-2 V2.3.1 (2026-09)
1 Scope
The present document covers the assessment of VHF radiotelephone transmitters and receivers for the maritime mobile
service operating in the frequency range 156 MHz to 174 MHz, and ancillary equipment in respect of ElectroMagnetic
Compatibility (EMC) intended to be used in a marine environment.
Technical specifications related to the antenna port and emissions from the enclosure port of marine radiotelephone
transmitters and receivers 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
VHF radiotelephone transmitters and receivers for the maritime mobile service, and 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 (V2.3.1): "ElectroMagnetic Compatibility (EMC) standard for marine radio
equipment and services; Part 1: Common technical requirements".
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 Parliam
...

SLOVENSKI STANDARD
01-november-2026
Standard elektromagnetne združljivosti (EMC) za pomorsko radijsko opremo in
storitve - Harmonizirani standard za elektromagnetno združljivost - 2. del: Posebni
pogoji za radiotelefonske VHF oddajnike in sprejemnike, ki delujejo v frekvenčnem
območju od 156 MHz do 174 MHz
ElectroMagnetic Compatibility (EMC) standard for marine radio equipment and services -
Harmonised Standard for electromagnetic compatibility - Part 2: Specific conditions for
VHF radiotelephone transmitters and receivers operating in the frequency range 156
MHz to 174 MHz
Ta slovenski standard je istoveten z: ETSI EN 301 843-2 V2.3.1 (2026-09)
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 2: Specific conditions for VHF radiotelephone
transmitters and receivers operating in the
frequency range 156 MHz to 174 MHz

2 ETSI EN 301 843-2 V2.3.1 (2026-09)

Reference
REN/ERM-EMC-414
Keywords
EMC, harmonised standard, maritime, radio,
regulation, VHF
ETSI
650 Route des Lucioles
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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 301 843-2 V2.3.1 (2026-09)
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 . 7
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 . 8
4.1 Environmental profile . 8
4.2 Arrangements for test signals . 8
4.2.0 General . 8
4.2.1 Arrangements for test signals at the input of the transmitter . 8
4.2.2 Arrangements for test signals at the output of the transmitter . 8
4.2.3 Arrangements for test signals at the input of the receiver . 8
4.2.3.1 GNSS test signals . 8
4.2.3.2 Marine communication test signals . 9
4.2.4 Arrangements for test signals at the output of the receiver . 9
4.2.5 Arrangements for testing transmitter and receiver together (as a system) . 9
4.3 Exclusion bands . 9
4.3.0 General . 9
4.3.1 Exclusion bands for receivers and receiver parts of transceivers . 9
4.3.1.1 GNSS exclusion bands . 9
4.3.1.2 Marine communication exclusion bands . 10
4.3.2 Exclusion band for transmitters . 10
4.4 Intermediate frequency responses on receivers . 10
4.5 Test modulation . 10
5 Performance assessment . 10
5.1 General . 10
5.2 Equipment which can provide a continuous communication link . 11
5.3 Equipment which does not provide a continuous communication link . 11
5.4 Ancillary equipment . 11
5.5 Equipment classification . 11
6 Performance criteria . 11
6.0 General . 11
6.1 Performance criteria A for continuous phenomena applied to transmitters and receivers. 11
6.2 Performance criteria B for transient phenomena applied to transmitters and receivers . 11
6.3 Performance criteria C applied to power supply failure . 11
6.4 Performance check . 12
6.4.1 Transmitter . 12
6.4.2 Receiver . 12
6.4.2.1 GNSS . 12
6.4.2.2 VHF Marine Receiver . 12
7 Applicability overview . 12
7.0 General . 12
7.1 EMC Emission . 13
7.1.1 General conditions . 13
7.1.2 Special conditions . 13
7.2 Immunity . 13
ETSI
4 ETSI EN 301 843-2 V2.3.1 (2026-09)
7.2.0 Objective . 13
7.2.1 General conditions . 13
7.2.2 Special conditions . 14
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 15
Annex B (informative): Bibliography . 17
Annex C (informative): Change history . 18
History . 19

ETSI
5 ETSI EN 301 843-2 V2.3.1 (2026-09)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables (European Standard (EN), Technical Specification (TS),
Group Specification (GS) or ETSI Standard (ES)) may have been declared to ETSI. The declarations pertaining to these
essential IPRs, if any, are publicly available for ETSI members and non-members, and can be found in
ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI IPR online database.
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its
Members. 3GPP™, LTE™ and 5G™ logo are trademarks of ETSI registered for the benefit of its Members and of the
3GPP Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of ®
the oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM).
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.1] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.2].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive and associated
EFTA regulations.
The present document is part 2 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: 14 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 2028

ETSI
6 ETSI EN 301 843-2 V2.3.1 (2026-09)
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 301 843-2 V2.3.1 (2026-09)
1 Scope
The present document covers the assessment of VHF radiotelephone transmitters and receivers for the maritime mobile
service operating in the frequency range 156 MHz to 174 MHz, and ancillary equipment in respect of ElectroMagnetic
Compatibility (EMC) intended to be used in a marine environment.
Technical specifications related to the antenna port and emissions from the enclosure port of marine radiotelephone
transmitters and receivers 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
VHF radiotelephone transmitters and receivers for the maritime mobile service, and 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 (V2.3.1): "ElectroMagnetic Compatibility (EMC) standard for marine radio
equipment and services; Part 1: Common technical requirements".
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 b
...