SIST EN 301 489-22 V2.1.1:2020

SLOVENSKI STANDARD
SIST EN 301 489-22 V2.1.1:2020
01-december-2020
Standard elektromagnetne združljivosti (EMC) za radijsko opremo in storitve - 22.
del: Posebne zahteve za talno mobilno in fiksno letalniško (aeronavtično) radijsko
opremo - Harmonizirani standard za elektromagnetno združljivost
ElectroMagnetic Compatibility (EMC) standard for radio equipment and services - Part
22: Specific conditions for ground based aeronautical mobile and fixed radio equipment -
Harmonised Standard for ElectroMagnetic Compatibility
Ta slovenski standard je istoveten z: ETSI EN 301 489-22 V2.1.1 (2020-10)
ICS:
33.060.01 Radijske komunikacije na Radiocommunications in
splošno general
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
SIST EN 301 489-22 V2.1.1:2020 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 301 489-22 V2.1.1:2020

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SIST EN 301 489-22 V2.1.1:2020
ETSI EN 301 489-22 V2.1.1 (2020-10)






HARMONISED EUROPEAN STANDARD
ElectroMagnetic Compatibility (EMC)
standard for radio equipment and services;
Part 22: Specific conditions for ground based
aeronautical mobile and fixed radio equipment;
Harmonised Standard for ElectroMagnetic Compatibility

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SIST EN 301 489-22 V2.1.1:2020
 2 ETSI EN 301 489-22 V2.1.1 (2020-10)



Reference
REN/ERM-EMC-355
Keywords
aeronautical, EMC, harmonised standard, UHF,
VHF
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
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 at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
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 2020.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ 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.
ETSI

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SIST EN 301 489-22 V2.1.1:2020
 3 ETSI EN 301 489-22 V2.1.1 (2020-10)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 7
3.1 Terms . 7
3.2 Symbols . 8
3.3 Abbreviations . 8
4 Test conditions . 8
4.1 General . 8
4.2 Arrangements for test signals . 8
4.2.0 General . 8
4.2.1 Arrangement for test signals at the input to the transmitter . 8
4.2.2 Arrangements for test signals at the output from the transmitter . 9
4.2.3 Arrangements for test signals at the input to the receiver . 9
4.2.4 Arrangements for test signals at the output from the receiver . 9
4.2.5 Arrangements for testing transmitters and receivers together (as a system) . 9
4.3 RF exclusion band for radio communications equipment . 9
4.3.1 General . 9
4.3.2 Transmitter exclusion bands for EM emission measurements . 9
4.3.3 Receiver exclusion bands for EM emission measurements . 10
4.3.4 Transmitter exclusion bands for immunity tests . 10
4.3.5 Receiver exclusion bands for immunity tests . 10
4.4 Narrow band responses of receivers . 10
4.5 Normal test modulation . 11
5 Performance assessment . 11
5.1 Void . 11
5.2 Equipment which can provide a continuous communications link . 11
5.3 Void . 11
5.4 Ancillary equipment . 11
5.5 Equipment classification . 12
6 Performance criteria . 12
6.1 General Requirements . 12
6.2 Performance criteria A for continuous phenomena applied to transmitters and receivers. 13
6.3 Performance criteria B for transient phenomena applied to transmitters and receivers . 13
6.4 Performance criteria C for immunity tests with power interruptions . 13
7 Applicability overview . 14
7.1 Emission . 14
7.1.1 General . 14
7.1.2 Methods of measurement and limits modifications . 14
7.2 Immunity . 15
7.2.1 General . 15
7.2.2 Test methods and levels modifications . 16
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 18
Annex B (normative): Minimum Performance Levels (MPL) . 20
B.1 Ground based aeronautical VHF and UHF radio . 20
ETSI

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SIST EN 301 489-22 V2.1.1:2020
 4 ETSI EN 301 489-22 V2.1.1 (2020-10)
B.2 VHF Digital Link Mode 2 (VDL Mode 2) and Mode 4 (VDL Mode 4) . 20
Annex C (informative): Test Report . 21
Annex D (informative): Change history . 22
History . 23


ETSI

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SIST EN 301 489-22 V2.1.1:2020
 5 ETSI EN 301 489-22 V2.1.1 (2020-10)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is 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 Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, 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.
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.2] 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.1].
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 22 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: 8 October 2020
Date of latest announcement of this EN (doa): 31 January 2021
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 July 2021
Date of withdrawal of any conflicting National Standard (dow): 31 July 2022

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

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SIST EN 301 489-22 V2.1.1:2020
 6 ETSI EN 301 489-22 V2.1.1 (2020-10)
1 Scope
The present document covers in respect of ElectroMagnetic Compatibility (EMC), the assessment of:
1) ground based aeronautical VHF radio communications equipment characterized by the following operating
conditions:
a) operating in the frequency range 118 MHz to 136,975 MHz, at 8,33 kHz or 25 kHz channel
spacing;
b) using DSB AM modulation;
2) ground-based UHF radio transmitters, receivers and transceivers for the UHF aeronautical mobile service
characterized by the following operating conditions:
a) operating in the frequency range 225 MHz to 399,975 MHz at 12,5 kHz or 25 kHz channel spacing;
b) using DSB AM modulation;
3) VDL Mode 2 ground base station radio equipment operating in the frequency range 117,975 MHz to
137,000 MHz;
4) VDL Mode 4 ground base station radio equipment operating in the frequency range 112,000 MHz to
136,975 MHz.
NOTE: The relationship between the present document and essential requirements of article 3.1(b) of Directive
2014/53/EU [i.1] 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 at
https://docbox.etsi.org/Reference/.
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 301 489-1 (V2.2.3) (11-2019): "ElectroMagnetic Compatibility (EMC) standard for
radio equipment and services; Part 1: Common technical requirements; Harmonised Standard for
ElectroMagnetic Compatibility".
[2] ETSI EN 301 841-1 (V1.4.1) (04-2015): "VHF air-ground Digital Link (VDL) Mode 2; Technical
characteristics and methods of measurement for ground-based equipment; Part 1: Physical layer
and MAC sub-layer".
[3] ETSI EN 301 842-1 (V1.4.1) (04-2015): "VHF air-ground Digital Link (VDL) Mode 4 radio
equipment; Technical characteristics and methods of measurement for ground-based equipment;
Part 1: EN for ground equipment".
[4] ETSI EN 300 676-1 (V1.5.2) (03-2011): "Ground-based VHF hand-held, mobile and fixed radio
transmitters, receivers and transceivers for the VHF aeronautical mobile service using amplitude
modulation; Part 1: Technical characteristics and methods of measurement".
ETSI

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SIST EN 301 489-22 V2.1.1:2020
 7 ETSI EN 301 489-22 V2.1.1 (2020-10)
[5] ETSI EN 302 617 (V2.3.1) (07-2018): "Ground-based UHF radio transmitters, receivers and
transceivers for the UHF aeronautical mobile service using amplitude modulation; Harmonised
Standard for access to radio spectrum".
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 are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] 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.2] 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.3] ITU Radio Regulations (2016).
[i.4] Recommendation ITU-T P.53: "Psophometer for use on telephone-type circuits".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the terms given in ETSI EN 301 489-1 [1] and the following apply:
base station: aeronautical radio equipment, used in the aeronautical mobile service, for use with an external antenna
and intended for use at a fixed location
centre frequency (Fc): centre of the transmitter necessary bandwidth
integral antenna equipment: radio communications equipment with an antenna integrated into the equipment without
the use of an external connector and considered to be part of the equipment
necessary bandwidth: for a given class of emission, the width of the frequency band which is just sufficient to ensure
the transmission of information at the rate and with the quality required under specified conditions
NOTE: This is the definition in the ITU Radio Regulations, clause 146 [i.3].
occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the
mean powers emitted are each equal to a specified percentage ß/2 of the total mean power of a given emission
NOTE: Unless otherwise specified by ITU-R for the appropriate class of emission, the value of ß/2 should be
taken as 0,5 % as defined in the ITU Radio Regulations [i.3].
operating frequency range: range(s) of continuous radio frequencies covered by the Equipment Under Test (EUT)
product standard: functional standard describing frequency management parameters of radio product
simplex: instantaneous one-way communications link
ETSI

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SIST EN 301 489-22 V2.1.1:2020
 8 ETSI EN 301 489-22 V2.1.1 (2020-10)
3.2 Symbols
Void.
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
AM Amplitude Modulation
BER Bit Error Ratio
BW BandWidth
DC Direct Current
DSB Double Side Band full carrier
EM ElectroMagnetic
EMC ElectroMagnetic Compatibility
EUT Equipment Under Test
Fc centre frequency
MPL Minimum Performance Levels
RF Radio Frequency
rms root mean of squares
SINAD Signal In Noise And Distortion
THD Total Harmonic Distortion
UHF Ultra High Frequency
VDL VHF Digital Link
VHF Very High Frequency
4 Test conditions
4.1 General
The test configuration and mode of operation shall represent the intended use and shall be recorded in the test report.
4.2 Arrangements for test signals
4.2.0 General
The provisions of ETSI EN 301 489-1 [1], clause 4.2 shall apply with the following modification:
• For integral antenna radio communications equipment a temporary 50 Ω RF connection point may be provided
for connection to the measuring equipment.
4.2.1 Arrangement for test signals at the input to the transmitter
The provisions of ETSI EN 301 489-1 [1], clause 4.2.1 shall apply with the following modification:
• The transmitter shall be modulated with normal test modulation by an internal or external signal source
capable of producing the appropriate drive signal (see clause 4.5).
ETSI

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SIST EN 301 489-22 V2.1.1:2020
 9 ETSI EN 301 489-22 V2.1.1 (2020-10)
4.2.2 Arrangements for test signals at the output from the transmitter
The provisions of ETSI EN 301 489-1 [1], clause 4.2.2 shall apply with the following modifications:
• The transmitter shall be operated at its maximum rated RF carrier output. If the maximum power cannot be
maintained due to thermal limitations, any tests should be paused and the transmitter allowed to cool, until full
power can be maintained again.
• The RF output signal of the transmitter shall be coupled to the measuring equipment via a shielded
transmission line such as a coaxial cable. The measuring equipment shall comprise a combination of a
modulation analyser and an audio distortion meter.
4.2.3 Arrangements for test signals at the input to the receiver
The provisions of ETSI EN 301 489-1 [1], clause 4.2.3 shall apply with the following modifications:
• The wanted RF input signal coupled to the receiver shall be modulated with normal test modulation (see
clause 4.5).
4.2.4 Arrangements for test signals at the output from the receiver
The provisions of ETSI EN 301 489-1 [1], clause 4.2.4 shall apply.
4.2.5 Arrangements for testing transmitters and receivers together
(as a system)
The provisions of ETSI EN 301 489-1 [1], clause 4.2.5 shall apply.
4.3 RF exclusion band for radio communications equipment
4.3.1 General
Frequencies on which radio communications equipment is intended to operate are excluded from immunity tests with
radiated RF test signals.
The provisions of ETSI EN 301 489-1 [1], clause 4.3 shall apply with the following modifications:
• The transmitter exclusion bands and the receiver exclusion bands as defined in clauses 4.3.2 to 4.3.5 shall
apply.
4.3.2 Transmitter exclusion bands for EM emission measurements
Exclusion bands shall apply when measuring transmitters in transmit mode of operation.
Exclusion bands shall not apply when measuring transmitters in standby mode of operation.
The exclusion bands for transmitters are given in table 1.
ETSI

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SIST EN 301 489-22 V2.1.1:2020
 10 ETSI EN 301 489-22 V2.1.1 (2020-10)
Table 1: Transmitter exclusion bands for emission measurements
Category of EUT Width of exclusion band Centre of exclusion band
(Channel spacing) (see notes 1 and 2)
8,33 kHz 2,042 MHz or 2,442 MHz Fc
12,5 kHz 2,063 MHz or 2,463 MHz Fc
25 kHz equipment 2,125 MHz or 2,525 MHz Fc
NOTE 1: The exclusion band is the product of 5 times the channel spacing plus 20 times the measurement bandwidth
(i.e. 100 kHz or 120 kHz), for the measurement range 30 MHz to 1 GHz.
NOTE 2: The extension of the exclusion bandwidth for transmitters to include 20 times the measurement bandwidth is
needed to accommodate the skirt bandwidth of the filters used in the measurement equipment. A narrower
measurement bandwidth may be used. The exclusion band and measurement bandwidth shall be recorded
in the test report.

4.3.3 Receiver exclusion bands for EM emission measurements
There shall be no frequency exclusion band applied to EM emission measurements of receivers.
4.3.4 Transmitter exclusion bands for immunity tests
The exclusion band extends plus and minus twice the occupied BandWidth (BW) from the centre frequency
(Fc ± 2 BW).
For 25 kHz equipment the exclusion band extends ±50 kHz, for 8,33 kHz equipment ±16,7 kHz and for 12,5 kHz
equipment ±25 kHz around the centre frequency (Fc).
4.3.5 Receiver exclusion bands for immunity tests
The exclusion band is the operating frequency range, extended at each end by ± 5 % of the centre frequency (Fc).
EXAMPLE: For the equipment intended to operate in the frequency band 118 MHz to 136,975 MHz, the
exclusion band extends from 111,625 MHz (i.e. 118 MHz minus (127,5 times 0,05) MHz) to
143,35 MHz (i.e. 136,975 MHz plus (127,5 times 0,05) MHz).
For the equipment intended to operate in the frequency band 225 MHz to 399,975 MHz, the
exclusion band extends from 209,375 MHz (i.e. 225 MHz minus (312,5 times 0,05) MHz) to
415,600 MHz (i.e. 399,975 MHz plus (312,5 times 0,05) MHz).
4.4 Narrow band responses of receivers
Responses on receivers or the receiver part of transceivers occurring during the immunity tests at discrete frequencies
which are narrow band responses (spurious responses), are identified by the following method.
If during immunity RF test the RF test signal (see ETSI EN 301 489-1 [1], clauses 9.2 and 9.5) causes non-compliance
of the receiver, it is necessary to evaluate whether this non-compliance is due to a narrow band response or a wideband
phenomenon. Therefore, the frequency of the test signal is increased by an amount equal to twice the nominal 6 dB
bandwidth of the IF filter immediately preceding the demodulator of the receiver, or if appropriate, the bandwidth over
which the equipment is intended to operate. The test is repeated with the frequency of the test signal decreased by the
same amount.
If the receiver is then in either or both frequency offset cases in compliance with the specified performance criteria, the
response is considered as a narrow band response.
If the receiver still does not comply with the specified performance criteria, this may be due to the fact that the offset
has made the frequency of the unwanted signal correspond to the frequency of another narrow band response. Under
these circumstances the procedure is repeated with an increase and decrease of the frequency of the test signal adjusted
two and a half times the bandwidth referred to above.
If the receiver still does not comply with the specified performance criteria in either or both frequency offset cases, the
phenomena is considered wide band and therefore an EMC problem and the equipment fails the test.
ETSI

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SIST EN 301 489-22 V2.1.1:2020
 11 ETSI EN 301 489-22 V2.1.1 (2020-10)
For immunity tests, narrow band responses shall be subject to spurious response rejection tests specified in the relevant
product standards for the effective use of the radio spectrum.
4.5 Normal test modulation
The normal test modulation is specified as follows:
• for analogue speech equipment:
- the receiver input signal shall be set to the nominal operating frequency, modulated with a sinusoidal
audio frequency of 1 kHz at 30 % depth and at a level which gives a SINAD ratio of 20 dB, measured at
the receiver output using a psophometric telephone filtering network as described in Recommendation
ITU-T P.53 [i.4];
- the transmitter shall be modulated with a sinusoidal audio frequency signal of 1 kHz. The level of this
audio signal shall be set to obtain at least 80 % modulation depth of the RF output signal;
• for VDL Mode 2 and VDL Mode 4 equipment:
- the receiver input signal shall be set to the nominal frequency of the receiver, modulated with a test
sign
...

Draft ETSI EN 301 489-22 V2.0.1 (2020-07)






HARMONISED EUROPEAN STANDARD
ElectroMagnetic Compatibility (EMC)
standard for radio equipment and services;
Part 22: Specific conditions for ground based
aeronautical mobile and fixed radio equipment;
Harmonised Standard for ElectroMagnetic Compatibility

---------------------- Page: 1 ----------------------
2 Draft ETSI EN 301 489-22 V2.0.1 (2020-07)



Reference
REN/ERM-EMC-355
Keywords
aeronautical, EMC, harmonised standard, UHF,
VHF
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
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 at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
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 2020.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ 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.
ETSI

---------------------- Page: 2 ----------------------
3 Draft ETSI EN 301 489-22 V2.0.1 (2020-07)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 7
3.1 Terms . 7
3.2 Symbols . 8
3.3 Abbreviations . 8
4 Test conditions . 8
4.1 General . 8
4.2 Arrangements for test signals . 8
4.2.0 General . 8
4.2.1 Arrangement for test signals at the input to the transmitter . 8
4.2.2 Arrangements for test signals at the output from the transmitter . 9
4.2.3 Arrangements for test signals at the input to the receiver . 9
4.2.4 Arrangements for test signals at the output from the receiver . 9
4.2.5 Arrangements for testing transmitters and receivers together (as a system) . 9
4.3 RF exclusion band for radio communications equipment . 9
4.3.1 General . 9
4.3.2 Transmitter exclusion bands for EM emission measurements . 9
4.3.3 Receiver exclusion bands for EM emission measurements . 10
4.3.4 Transmitter exclusion bands for immunity tests . 10
4.3.5 Receiver exclusion bands for immunity tests . 10
4.4 Narrow band responses of receivers . 10
4.5 Normal test modulation . 11
5 Performance assessment . 11
5.1 Void . 11
5.2 Equipment which can provide a continuous communications link . 11
5.3 Void . 11
5.4 Ancillary equipment . 11
5.5 Equipment classification . 12
6 Performance criteria . 12
6.1 General Requirements . 12
6.2 Performance criteria A for continuous phenomena applied to transmitters and receivers. 13
6.3 Performance criteria B for transient phenomena applied to transmitters and receivers . 13
6.4 Performance criteria C for immunity tests with power interruptions . 13
7 Applicability overview . 14
7.1 Emission . 14
7.1.1 General . 14
7.1.2 Methods of measurement and limits modifications . 14
7.2 Immunity . 15
7.2.1 General . 15
7.2.2 Test methods and levels modifications . 16
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 18
Annex B (normative): Minimum Performance Levels (MPL) . 20
B.1 Ground based aeronautical VHF and UHF radio . 20
ETSI

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4 Draft ETSI EN 301 489-22 V2.0.1 (2020-07)
B.2 VHF Digital Link Mode 2 (VDL Mode 2) and Mode 4 (VDL Mode 4) . 20
Annex C (informative): Test Report . 21
Annex D (informative): Change history . 22
History . 23


ETSI

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5 Draft ETSI EN 301 489-22 V2.0.1 (2020-07)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is 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 Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, 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.
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 standards EN Approval Procedure.
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.2] 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.1].
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 22 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

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

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6 Draft ETSI EN 301 489-22 V2.0.1 (2020-07)
1 Scope
The present document covers in respect of ElectroMagnetic Compatibility (EMC), the assessment of:
1) ground based aeronautical VHF radio communications equipment characterized by the following operating
conditions:
a) operating in the frequency range 118 MHz to 136,975 MHz, at 8,33 kHz or 25 kHz channel
spacing;
b) using DSB AM modulation;
2) ground-based UHF radio transmitters, receivers and transceivers for the UHF aeronautical mobile service
characterized by the following operating conditions:
a) operating in the frequency range 225 MHz to 399,975 MHz at 12,5 kHz or 25 kHz channel spacing;
b) using DSB AM modulation;
3) VDL Mode 2 ground base station radio equipment operating in the frequency range 117,975 MHz to
137,000 MHz;
4) VDL Mode 4 ground base station radio equipment operating in the frequency range 112,000 MHz to
136,975 MHz.
NOTE: The relationship between the present document and essential requirements of article 3.1(b) of Directive
2014/53/EU [i.1] 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 at
https://docbox.etsi.org/Reference/.
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 301 489-1 (V2.2.3) (11-2019): "ElectroMagnetic Compatibility (EMC) standard for
radio equipment and services; Part 1: Common technical requirements; Harmonised Standard for
ElectroMagnetic Compatibility".
[2] ETSI EN 301 841-1 (V1.4.1) (04-2015): "VHF air-ground Digital Link (VDL) Mode 2; Technical
characteristics and methods of measurement for ground-based equipment; Part 1: Physical layer
and MAC sub-layer".
[3] ETSI EN 301 842-1 (V1.4.1) (04-2015): "VHF air-ground Digital Link (VDL) Mode 4 radio
equipment; Technical characteristics and methods of measurement for ground-based equipment;
Part 1: EN for ground equipment".
[4] ETSI EN 300 676-1 (V1.5.2) (03-2011): "Ground-based VHF hand-held, mobile and fixed radio
transmitters, receivers and transceivers for the VHF aeronautical mobile service using amplitude
modulation; Part 1: Technical characteristics and methods of measurement".
ETSI

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7 Draft ETSI EN 301 489-22 V2.0.1 (2020-07)
[5] ETSI EN 302 617 (V2.3.1) (07-2018): "Ground-based UHF radio transmitters, receivers and
transceivers for the UHF aeronautical mobile service using amplitude modulation; Harmonised
Standard for access to radio spectrum".
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 are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] 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.2] 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.3] ITU Radio Regulations (2016).
[i.4] Recommendation ITU-T P.53: "Psophometer for use on telephone-type circuits".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the terms given in ETSI EN 301 489-1 [1] and the following apply:
base station: aeronautical radio equipment, used in the aeronautical mobile service, for use with an external antenna
and intended for use at a fixed location
centre frequency (Fc): centre of the transmitter necessary bandwidth
integral antenna equipment: radio communications equipment with an antenna integrated into the equipment without
the use of an external connector and considered to be part of the equipment
necessary bandwidth: for a given class of emission, the width of the frequency band which is just sufficient to ensure
the transmission of information at the rate and with the quality required under specified conditions
NOTE: This is the definition in the ITU Radio Regulations, clause 146 [i.3].
occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the
mean powers emitted are each equal to a specified percentage ß/2 of the total mean power of a given emission
NOTE: Unless otherwise specified by ITU-R for the appropriate class of emission, the value of ß/2 should be
taken as 0,5 % as defined in the ITU Radio Regulations [i.3].
operating frequency range: range(s) of continuous radio frequencies covered by the Equipment Under Test (EUT)
product standard: functional standard describing frequency management parameters of radio product
simplex: instantaneous one-way communications link
ETSI

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8 Draft ETSI EN 301 489-22 V2.0.1 (2020-07)
3.2 Symbols
Void.
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
AM Amplitude Modulation
BER Bit Error Ratio
BW BandWidth
DC Direct Current
DSB Double Side Band full carrier
EM ElectroMagnetic
EMC ElectroMagnetic Compatibility
EUT Equipment Under Test
Fc centre frequency
MPL Minimum Performance Levels
RF Radio Frequency
rms root mean of squares
SINAD Signal In Noise And Distortion
THD Total Harmonic Distortion
UHF Ultra High Frequency
VDL VHF Digital Link
VHF Very High Frequency
4 Test conditions
4.1 General
The test configuration and mode of operation shall represent the intended use and shall be recorded in the test report.
4.2 Arrangements for test signals
4.2.0 General
The provisions of ETSI EN 301 489-1 [1], clause 4.2 shall apply with the following modification:
• For integral antenna radio communications equipment a temporary 50 Ω RF connection point may be provided
for connection to the measuring equipment.
4.2.1 Arrangement for test signals at the input to the transmitter
The provisions of ETSI EN 301 489-1 [1], clause 4.2.1 shall apply with the following modification:
• The transmitter shall be modulated with normal test modulation by an internal or external signal source
capable of producing the appropriate drive signal (see clause 4.5).
ETSI

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9 Draft ETSI EN 301 489-22 V2.0.1 (2020-07)
4.2.2 Arrangements for test signals at the output from the transmitter
The provisions of ETSI EN 301 489-1 [1], clause 4.2.2 shall apply with the following modifications:
• The transmitter shall be operated at its maximum rated RF carrier output. If the maximum power cannot be
maintained due to thermal limitations, any tests should be paused and the transmitter allowed to cool, until full
power can be maintained again.
• The RF output signal of the transmitter shall be coupled to the measuring equipment via a shielded
transmission line such as a coaxial cable. The measuring equipment shall comprise a combination of a
modulation analyser and an audio distortion meter.
4.2.3 Arrangements for test signals at the input to the receiver
The provisions of ETSI EN 301 489-1 [1], clause 4.2.3 shall apply with the following modifications:
• The wanted RF input signal coupled to the receiver shall be modulated with normal test modulation (see
clause 4.5).
4.2.4 Arrangements for test signals at the output from the receiver
The provisions of ETSI EN 301 489-1 [1], clause 4.2.4 shall apply.
4.2.5 Arrangements for testing transmitters and receivers together
(as a system)
The provisions of ETSI EN 301 489-1 [1], clause 4.2.5 shall apply.
4.3 RF exclusion band for radio communications equipment
4.3.1 General
Frequencies on which radio communications equipment is intended to operate are excluded from immunity tests with
radiated RF test signals.
The provisions of ETSI EN 301 489-1 [1], clause 4.3 shall apply with the following modifications:
• The transmitter exclusion bands and the receiver exclusion bands as defined in clauses 4.3.2 to 4.3.5 shall
apply.
4.3.2 Transmitter exclusion bands for EM emission measurements
Exclusion bands shall apply when measuring transmitters in transmit mode of operation.
Exclusion bands shall not apply when measuring transmitters in standby mode of operation.
The exclusion bands for transmitters are given in table 1.
ETSI

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10 Draft ETSI EN 301 489-22 V2.0.1 (2020-07)
Table 1: Transmitter exclusion bands for emission measurements
Category of EUT Width of exclusion band Centre of exclusion band
(Channel spacing) (see notes 1 and 2)
8,33 kHz 2,042 MHz or 2,442 MHz Fc
12,5 kHz 2,063 MHz or 2,463 MHz Fc
25 kHz equipment 2,125 MHz or 2,525 MHz Fc
NOTE 1: The exclusion band is the product of 5 times the channel spacing plus 20 times the measurement bandwidth
(i.e. 100 kHz or 120 kHz), for the measurement range 30 MHz to 1 GHz.
NOTE 2: The extension of the exclusion bandwidth for transmitters to include 20 times the measurement bandwidth is
needed to accommodate the skirt bandwidth of the filters used in the measurement equipment. A narrower
measurement bandwidth may be used. The exclusion band and measurement bandwidth shall be recorded
in the test report.

4.3.3 Receiver exclusion bands for EM emission measurements
There shall be no frequency exclusion band applied to EM emission measurements of receivers.
4.3.4 Transmitter exclusion bands for immunity tests
The exclusion band extends plus and minus twice the occupied BandWidth (BW) from the centre frequency
(Fc ± 2 BW).
For 25 kHz equipment the exclusion band extends ±50 kHz, for 8,33 kHz equipment ±16,7 kHz and for 12,5 kHz
equipment ±25 kHz around the centre frequency (Fc).
4.3.5 Receiver exclusion bands for immunity tests
The exclusion band is the operating frequency range, extended at each end by ± 5 % of the centre frequency (Fc).
EXAMPLE: For the equipment intended to operate in the frequency band 118 MHz to 136,975 MHz, the
exclusion band extends from 111,625 MHz (i.e. 118 MHz minus (127,5 times 0,05) MHz) to
143,35 MHz (i.e. 136,975 MHz plus (127,5 times 0,05) MHz).
For the equipment intended to operate in the frequency band 225 MHz to 399,975 MHz, the
exclusion band extends from 209,375 MHz (i.e. 225 MHz minus (312,5 times 0,05) MHz) to
415,600 MHz (i.e. 399,975 MHz plus (312,5 times 0,05) MHz).
4.4 Narrow band responses of receivers
Responses on receivers or the receiver part of transceivers occurring during the immunity tests at discrete frequencies
which are narrow band responses (spurious responses), are identified by the following method.
If during immunity RF test the RF test signal (see ETSI EN 301 489-1 [1], clauses 9.2 and 9.5) causes non-compliance
of the receiver, it is necessary to evaluate whether this non-compliance is due to a narrow band response or a wideband
phenomenon. Therefore, the frequency of the test signal is increased by an amount equal to twice the nominal 6 dB
bandwidth of the IF filter immediately preceding the demodulator of the receiver, or if appropriate, the bandwidth over
which the equipment is intended to operate. The test is repeated with the frequency of the test signal decreased by the
same amount.
If the receiver is then in either or both frequency offset cases in compliance with the specified performance criteria, the
response is considered as a narrow band response.
If the receiver still does not comply with the specified performance criteria, this may be due to the fact that the offset
has made the frequency of the unwanted signal correspond to the frequency of another narrow band response. Under
these circumstances the procedure is repeated with an increase and decrease of the frequency of the test signal adjusted
two and a half times the bandwidth referred to above.
If the receiver still does not comply with the specified performance criteria in either or both frequency offset cases, the
phenomena is considered wide band and therefore an EMC problem and the equipment fails the test.
ETSI

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11 Draft ETSI EN 301 489-22 V2.0.1 (2020-07)
For immunity tests, narrow band responses shall be subject to spurious response rejection tests specified in the relevant
product standards for the effective use of the radio spectrum.
4.5 Normal test modulation
The normal test modulation is specified as follows:
• for analogue speech equipment:
- the receiver input signal shall be set to the nominal operating frequency, modulated with a sinusoidal
audio frequency of 1 kHz at 30 % depth and at a level which gives a SINAD ratio of 20 dB, measured at
the receiver output using a psophometric telephone filtering network as described in Recommendation
ITU-T P.53 [i.4];
- the transmitter shall be modulated with a sinusoidal audio frequency signal of 1 kHz. The level of this
audio signal shall be set to obtain at least 80 % modulation depth of the RF output signal;
• for VDL Mode 2 and VDL Mode 4 equipment:
- the receiver input signal shall be set to the nominal frequency of the receiver, modulated with a test
signal which represents normal operation;
- the transmitter shall be modulated with a test signal which represents the intended normal operation of
the equipment;
- the test signal generator (modulation) shall be able to produce a continuous stream of data or a repetitive
message as appropriate;
- in the case of data equipment, the test instrumentation shall be able to produce:
 a readout of BER of a continuous data stream; or
 a repetitive readout of message acceptance or an indication of data throughput rate in the case of
error-corrected systems.
5 Performance assessment
5.1 Void
5.2 Equipment which can provide a continuous communications
link
For immunity tests of transmitters, the transmitter shall be modulated with normal test modulation (see clause 4.5). A
continuous communication link shall be established at the start of the test, and the performance criteria specified in
clause 6 shall apply.
For immunity tests of receivers, the wanted RF input signal coupled to the receiver shall be modulated with normal test
modulation (see clause 4.5). A continuous communication link shall be established at the start of the test, and the
performance criteria specified in clause 6 shall apply.
5.3 Void
5.4 Anci
...

SLOVENSKI STANDARD
oSIST prEN 301 489-22 V2.0.1:2020
01-september-2020
Standard elektromagnetne združljivosti (EMC) za radijsko opremo in storitve - 22.
del: Posebne zahteve za talno mobilno in fiksno letalniško (aeronavtično) radijsko
opremo - Harmonizirani standard za elektromagnetno združljivost
ElectroMagnetic Compatibility (EMC) standard for radio equipment and services - Part
22: Specific conditions for ground based aeronautical mobile and fixed radio equipment -
Harmonised Standard for ElectroMagnetic Compatibility
Ta slovenski standard je istoveten z: ETSI EN 301 489-22 V2.0.1 (2020-07)
ICS:
33.060.01 Radijske komunikacije na Radiocommunications in
splošno general
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
oSIST prEN 301 489-22 V2.0.1:2020 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 301 489-22 V2.0.1:2020

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oSIST prEN 301 489-22 V2.0.1:2020
Draft ETSI EN 301 489-22 V2.0.1 (2020-07)






HARMONISED EUROPEAN STANDARD
ElectroMagnetic Compatibility (EMC)
standard for radio equipment and services;
Part 22: Specific conditions for ground based
aeronautical mobile and fixed radio equipment;
Harmonised Standard for ElectroMagnetic Compatibility

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oSIST prEN 301 489-22 V2.0.1:2020
 2 Draft ETSI EN 301 489-22 V2.0.1 (2020-07)



Reference
REN/ERM-EMC-355
Keywords
aeronautical, EMC, harmonised standard, UHF,
VHF
ETSI
650 Route des Lucioles
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Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16

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Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
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© ETSI 2020.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and
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of the oneM2M Partners.
®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

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oSIST prEN 301 489-22 V2.0.1:2020
 3 Draft ETSI EN 301 489-22 V2.0.1 (2020-07)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 7
3.1 Terms . 7
3.2 Symbols . 8
3.3 Abbreviations . 8
4 Test conditions . 8
4.1 General . 8
4.2 Arrangements for test signals . 8
4.2.0 General . 8
4.2.1 Arrangement for test signals at the input to the transmitter . 8
4.2.2 Arrangements for test signals at the output from the transmitter . 9
4.2.3 Arrangements for test signals at the input to the receiver . 9
4.2.4 Arrangements for test signals at the output from the receiver . 9
4.2.5 Arrangements for testing transmitters and receivers together (as a system) . 9
4.3 RF exclusion band for radio communications equipment . 9
4.3.1 General . 9
4.3.2 Transmitter exclusion bands for EM emission measurements . 9
4.3.3 Receiver exclusion bands for EM emission measurements . 10
4.3.4 Transmitter exclusion bands for immunity tests . 10
4.3.5 Receiver exclusion bands for immunity tests . 10
4.4 Narrow band responses of receivers . 10
4.5 Normal test modulation . 11
5 Performance assessment . 11
5.1 Void . 11
5.2 Equipment which can provide a continuous communications link . 11
5.3 Void . 11
5.4 Ancillary equipment . 11
5.5 Equipment classification . 12
6 Performance criteria . 12
6.1 General Requirements . 12
6.2 Performance criteria A for continuous phenomena applied to transmitters and receivers. 13
6.3 Performance criteria B for transient phenomena applied to transmitters and receivers . 13
6.4 Performance criteria C for immunity tests with power interruptions . 13
7 Applicability overview . 14
7.1 Emission . 14
7.1.1 General . 14
7.1.2 Methods of measurement and limits modifications . 14
7.2 Immunity . 15
7.2.1 General . 15
7.2.2 Test methods and levels modifications . 16
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 18
Annex B (normative): Minimum Performance Levels (MPL) . 20
B.1 Ground based aeronautical VHF and UHF radio . 20
ETSI

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oSIST prEN 301 489-22 V2.0.1:2020
 4 Draft ETSI EN 301 489-22 V2.0.1 (2020-07)
B.2 VHF Digital Link Mode 2 (VDL Mode 2) and Mode 4 (VDL Mode 4) . 20
Annex C (informative): Test Report . 21
Annex D (informative): Change history . 22
History . 23


ETSI

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oSIST prEN 301 489-22 V2.0.1:2020
 5 Draft ETSI EN 301 489-22 V2.0.1 (2020-07)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is 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 Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, 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.
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 standards EN Approval Procedure.
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.2] 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.1].
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 22 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

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

---------------------- Page: 7 ----------------------
oSIST prEN 301 489-22 V2.0.1:2020
 6 Draft ETSI EN 301 489-22 V2.0.1 (2020-07)
1 Scope
The present document covers in respect of ElectroMagnetic Compatibility (EMC), the assessment of:
1) ground based aeronautical VHF radio communications equipment characterized by the following operating
conditions:
a) operating in the frequency range 118 MHz to 136,975 MHz, at 8,33 kHz or 25 kHz channel
spacing;
b) using DSB AM modulation;
2) ground-based UHF radio transmitters, receivers and transceivers for the UHF aeronautical mobile service
characterized by the following operating conditions:
a) operating in the frequency range 225 MHz to 399,975 MHz at 12,5 kHz or 25 kHz channel spacing;
b) using DSB AM modulation;
3) VDL Mode 2 ground base station radio equipment operating in the frequency range 117,975 MHz to
137,000 MHz;
4) VDL Mode 4 ground base station radio equipment operating in the frequency range 112,000 MHz to
136,975 MHz.
NOTE: The relationship between the present document and essential requirements of article 3.1(b) of Directive
2014/53/EU [i.1] 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 at
https://docbox.etsi.org/Reference/.
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 301 489-1 (V2.2.3) (11-2019): "ElectroMagnetic Compatibility (EMC) standard for
radio equipment and services; Part 1: Common technical requirements; Harmonised Standard for
ElectroMagnetic Compatibility".
[2] ETSI EN 301 841-1 (V1.4.1) (04-2015): "VHF air-ground Digital Link (VDL) Mode 2; Technical
characteristics and methods of measurement for ground-based equipment; Part 1: Physical layer
and MAC sub-layer".
[3] ETSI EN 301 842-1 (V1.4.1) (04-2015): "VHF air-ground Digital Link (VDL) Mode 4 radio
equipment; Technical characteristics and methods of measurement for ground-based equipment;
Part 1: EN for ground equipment".
[4] ETSI EN 300 676-1 (V1.5.2) (03-2011): "Ground-based VHF hand-held, mobile and fixed radio
transmitters, receivers and transceivers for the VHF aeronautical mobile service using amplitude
modulation; Part 1: Technical characteristics and methods of measurement".
ETSI

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oSIST prEN 301 489-22 V2.0.1:2020
 7 Draft ETSI EN 301 489-22 V2.0.1 (2020-07)
[5] ETSI EN 302 617 (V2.3.1) (07-2018): "Ground-based UHF radio transmitters, receivers and
transceivers for the UHF aeronautical mobile service using amplitude modulation; Harmonised
Standard for access to radio spectrum".
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 are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] 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.2] 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.3] ITU Radio Regulations (2016).
[i.4] Recommendation ITU-T P.53: "Psophometer for use on telephone-type circuits".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the terms given in ETSI EN 301 489-1 [1] and the following apply:
base station: aeronautical radio equipment, used in the aeronautical mobile service, for use with an external antenna
and intended for use at a fixed location
centre frequency (Fc): centre of the transmitter necessary bandwidth
integral antenna equipment: radio communications equipment with an antenna integrated into the equipment without
the use of an external connector and considered to be part of the equipment
necessary bandwidth: for a given class of emission, the width of the frequency band which is just sufficient to ensure
the transmission of information at the rate and with the quality required under specified conditions
NOTE: This is the definition in the ITU Radio Regulations, clause 146 [i.3].
occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the
mean powers emitted are each equal to a specified percentage ß/2 of the total mean power of a given emission
NOTE: Unless otherwise specified by ITU-R for the appropriate class of emission, the value of ß/2 should be
taken as 0,5 % as defined in the ITU Radio Regulations [i.3].
operating frequency range: range(s) of continuous radio frequencies covered by the Equipment Under Test (EUT)
product standard: functional standard describing frequency management parameters of radio product
simplex: instantaneous one-way communications link
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3.2 Symbols
Void.
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
AM Amplitude Modulation
BER Bit Error Ratio
BW BandWidth
DC Direct Current
DSB Double Side Band full carrier
EM ElectroMagnetic
EMC ElectroMagnetic Compatibility
EUT Equipment Under Test
Fc centre frequency
MPL Minimum Performance Levels
RF Radio Frequency
rms root mean of squares
SINAD Signal In Noise And Distortion
THD Total Harmonic Distortion
UHF Ultra High Frequency
VDL VHF Digital Link
VHF Very High Frequency
4 Test conditions
4.1 General
The test configuration and mode of operation shall represent the intended use and shall be recorded in the test report.
4.2 Arrangements for test signals
4.2.0 General
The provisions of ETSI EN 301 489-1 [1], clause 4.2 shall apply with the following modification:
• For integral antenna radio communications equipment a temporary 50 Ω RF connection point may be provided
for connection to the measuring equipment.
4.2.1 Arrangement for test signals at the input to the transmitter
The provisions of ETSI EN 301 489-1 [1], clause 4.2.1 shall apply with the following modification:
• The transmitter shall be modulated with normal test modulation by an internal or external signal source
capable of producing the appropriate drive signal (see clause 4.5).
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4.2.2 Arrangements for test signals at the output from the transmitter
The provisions of ETSI EN 301 489-1 [1], clause 4.2.2 shall apply with the following modifications:
• The transmitter shall be operated at its maximum rated RF carrier output. If the maximum power cannot be
maintained due to thermal limitations, any tests should be paused and the transmitter allowed to cool, until full
power can be maintained again.
• The RF output signal of the transmitter shall be coupled to the measuring equipment via a shielded
transmission line such as a coaxial cable. The measuring equipment shall comprise a combination of a
modulation analyser and an audio distortion meter.
4.2.3 Arrangements for test signals at the input to the receiver
The provisions of ETSI EN 301 489-1 [1], clause 4.2.3 shall apply with the following modifications:
• The wanted RF input signal coupled to the receiver shall be modulated with normal test modulation (see
clause 4.5).
4.2.4 Arrangements for test signals at the output from the receiver
The provisions of ETSI EN 301 489-1 [1], clause 4.2.4 shall apply.
4.2.5 Arrangements for testing transmitters and receivers together
(as a system)
The provisions of ETSI EN 301 489-1 [1], clause 4.2.5 shall apply.
4.3 RF exclusion band for radio communications equipment
4.3.1 General
Frequencies on which radio communications equipment is intended to operate are excluded from immunity tests with
radiated RF test signals.
The provisions of ETSI EN 301 489-1 [1], clause 4.3 shall apply with the following modifications:
• The transmitter exclusion bands and the receiver exclusion bands as defined in clauses 4.3.2 to 4.3.5 shall
apply.
4.3.2 Transmitter exclusion bands for EM emission measurements
Exclusion bands shall apply when measuring transmitters in transmit mode of operation.
Exclusion bands shall not apply when measuring transmitters in standby mode of operation.
The exclusion bands for transmitters are given in table 1.
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Table 1: Transmitter exclusion bands for emission measurements
Category of EUT Width of exclusion band Centre of exclusion band
(Channel spacing) (see notes 1 and 2)
8,33 kHz 2,042 MHz or 2,442 MHz Fc
12,5 kHz 2,063 MHz or 2,463 MHz Fc
25 kHz equipment 2,125 MHz or 2,525 MHz Fc
NOTE 1: The exclusion band is the product of 5 times the channel spacing plus 20 times the measurement bandwidth
(i.e. 100 kHz or 120 kHz), for the measurement range 30 MHz to 1 GHz.
NOTE 2: The extension of the exclusion bandwidth for transmitters to include 20 times the measurement bandwidth is
needed to accommodate the skirt bandwidth of the filters used in the measurement equipment. A narrower
measurement bandwidth may be used. The exclusion band and measurement bandwidth shall be recorded
in the test report.

4.3.3 Receiver exclusion bands for EM emission measurements
There shall be no frequency exclusion band applied to EM emission measurements of receivers.
4.3.4 Transmitter exclusion bands for immunity tests
The exclusion band extends plus and minus twice the occupied BandWidth (BW) from the centre frequency
(Fc ± 2 BW).
For 25 kHz equipment the exclusion band extends ±50 kHz, for 8,33 kHz equipment ±16,7 kHz and for 12,5 kHz
equipment ±25 kHz around the centre frequency (Fc).
4.3.5 Receiver exclusion bands for immunity tests
The exclusion band is the operating frequency range, extended at each end by ± 5 % of the centre frequency (Fc).
EXAMPLE: For the equipment intended to operate in the frequency band 118 MHz to 136,975 MHz, the
exclusion band extends from 111,625 MHz (i.e. 118 MHz minus (127,5 times 0,05) MHz) to
143,35 MHz (i.e. 136,975 MHz plus (127,5 times 0,05) MHz).
For the equipment intended to operate in the frequency band 225 MHz to 399,975 MHz, the
exclusion band extends from 209,375 MHz (i.e. 225 MHz minus (312,5 times 0,05) MHz) to
415,600 MHz (i.e. 399,975 MHz plus (312,5 times 0,05) MHz).
4.4 Narrow band responses of receivers
Responses on receivers or the receiver part of transceivers occurring during the immunity tests at discrete frequencies
which are narrow band responses (spurious responses), are identified by the following method.
If during immunity RF test the RF test signal (see ETSI EN 301 489-1 [1], clauses 9.2 and 9.5) causes non-compliance
of the receiver, it is necessary to evaluate whether this non-compliance is due to a narrow band response or a wideband
phenomenon. Therefore, the frequency of the test signal is increased by an amount equal to twice the nominal 6 dB
bandwidth of the IF filter immediately preceding the demodulator of the receiver, or if appropriate, the bandwidth over
which the equipment is intended to operate. The test is repeated with the frequency of the test signal decreased by the
same amount.
If the receiver is then in either or both frequency offset cases in compliance with the specified performance criteria, the
response is considered as a narrow band response.
If the receiver still does not comply with the specified performance criteria, this may be due to the fact that the offset
has made the frequency of the unwanted signal correspond to the frequency of another narrow band response. Under
these circumstances the procedure is repeated with an increase and decrease of the frequency of the test signal adjusted
two and a half times the bandwidth referred to above.
If the receiver still does not comply with the specified performance criteria in either or both frequency offset cases, the
phenomena is considered wide band and therefore an EMC problem and the equipment fails the test.
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For immunity tests, narrow band responses shall be subject to spurious response rejection tests specified in the relevant
product standards for the effective use of the radio spectrum.
4.5 Normal test modulation
The normal test modulation is specified as follows:
• for analogue speech equipment:
- the receiver input signal shall be set to the nominal operating frequency, modulated with a sinusoidal
audio frequency of 1 kHz at 30 % depth and at a level which gives a SINAD ratio of 20 dB, measured at
the receiver output using a psophometric telephone filtering network as described in Recommendation
ITU-T P.53 [i.4];
- the transmitter shall be modulated with a sinusoidal audio frequency signal of 1 kHz. The level of this
audio signal shall b
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