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

ElectroMagnetic Compatibility (EMC) standard for radio equipment and services - Part

22: Specific conditions for ground based aeronautical mobile and fixed radio equipment -

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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

If you find errors in the present document, please send your comment to one of the following services:

No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying

The content of the PDF version shall not be modified without the written authorization of ETSI.

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

oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and

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

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

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

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

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.

This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic

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

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

The present document is part 22 of a multi-part deliverable. Full details of the entire series can be found in part 1 [1].

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

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

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

a) operating in the frequency range 118 MHz to 136,975 MHz, at 8,33 kHz or 25 kHz channel

2) ground-based UHF radio transmitters, receivers and transceivers for the UHF aeronautical mobile service

a) operating in the frequency range 225 MHz to 399,975 MHz at 12,5 kHz or 25 kHz channel spacing;

3) VDL Mode 2 ground base station radio equipment operating in the frequency range 117,975 MHz to

4) VDL Mode 4 ground base station radio equipment operating in the frequency range 112,000 MHz to

NOTE: The relationship between the present document and essential requirements of article 3.1(b) of Directive

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 documents which are not found to be publicly available in the expected location might be found at

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

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

[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

[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;

[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

[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

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

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

The following referenced documents are not necessary for the application of the present document but they assist the

[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

[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

[i.4] Recommendation ITU-T P.53: "Psophometer for use on telephone-type circuits".

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

integral antenna equipment: radio communications equipment with an antenna integrated into the equipment without

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

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

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

The test configuration and mode of operation shall represent the intended use and shall be recorded in the test report.

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

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

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

• 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

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

Frequencies on which radio communications equipment is intended to operate are excluded from immunity tests with

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

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.

NOTE 1: The exclusion band is the product of 5 times the channel spacing plus 20 times the measurement bandwidth

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

There shall be no frequency exclusion band applied to EM emission measurements of receivers.

The exclusion band extends plus and minus twice the occupied BandWidth (BW) from the centre frequency

For 25 kHz equipment the exclusion band extends ±50 kHz, for 8,33 kHz equipment ±16,7 kHz and for 12,5 kHz

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

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

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

If the receiver is then in either or both frequency offset cases in compliance with the specified performance criteria, the

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

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.

For immunity tests, narrow band responses shall be subject to spurious response rejection tests specified in the relevant

- 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

- 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;

- the receiver input signal shall be set to the nominal frequency of the receiver, modulated with a test

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

ElectroMagnetic Compatibility (EMC) standard for radio equipment and services - Part

22: Specific conditions for ground based aeronautical mobile and fixed radio equipment -

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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

If you find errors in the present document, please send your comment to one of the following services:

No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying

The content of the PDF version shall not be modified without the written authorization of ETSI.

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

oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and

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

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

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

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

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.

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

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

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

The present document is part 22 of a multi-part deliverable. Full details of the entire series can be found in part 1 [1].

Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

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

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

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

a) operating in the frequency range 118 MHz to 136,975 MHz, at 8,33 kHz or 25 kHz channel

2) ground-based UHF radio transmitters, receivers and transceivers for the UHF aeronautical mobile service

a) operating in the frequency range 225 MHz to 399,975 MHz at 12,5 kHz or 25 kHz channel spacing;

3) VDL Mode 2 ground base station radio equipment operating in the frequency range 117,975 MHz to

4) VDL Mode 4 ground base station radio equipment operating in the frequency range 112,000 MHz to

NOTE: The relationship between the present document and essential requirements of article 3.1(b) of Directive

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 documents which are not found to be publicly available in the expected location might be found at

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

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

[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

[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;

[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

[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

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

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

The following referenced documents are not necessary for the application of the present document but they assist the

[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

[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

[i.4] Recommendation ITU-T P.53: "Psophometer for use on telephone-type circuits".

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

integral antenna equipment: radio communications equipment with an antenna integrated into the equipment without

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

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

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

The test configuration and mode of operation shall represent the intended use and shall be recorded in the test report.

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

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

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

• 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

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

Frequencies on which radio communications equipment is intended to operate are excluded from immunity tests with

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

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.

NOTE 1: The exclusion band is the product of 5 times the channel spacing plus 20 times the measurement bandwidth

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

There shall be no frequency exclusion band applied to EM emission measurements of receivers.

The exclusion band extends plus and minus twice the occupied BandWidth (BW) from the centre frequency

For 25 kHz equipment the exclusion band extends ±50 kHz, for 8,33 kHz equipment ±16,7 kHz and for 12,5 kHz

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

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

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

If the receiver is then in either or both frequency offset cases in compliance with the specified performance criteria, the

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

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.

For immunity tests, narrow band responses shall be subject to spurious response rejection tests specified in the relevant

- 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

- the transmitter shall be modulated with a sinusoidal audio frequency signal of 1 kHz. The level of this

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
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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

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

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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

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

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

The present document is part 22 of a multi-part deliverable. Full details of the entire series can be found in part 1 [1].

Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

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

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

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

a) operating in the frequency range 118 MHz to 136,975 MHz, at 8,33 kHz or 25 kHz channel

2) ground-based UHF radio transmitters, receivers and transceivers for the UHF aeronautical mobile service

a) operating in the frequency range 225 MHz to 399,975 MHz at 12,5 kHz or 25 kHz channel spacing;

3) VDL Mode 2 ground base station radio equipment operating in the frequency range 117,975 MHz to

4) VDL Mode 4 ground base station radio equipment operating in the frequency range 112,000 MHz to

NOTE: The relationship between the present document and essential requirements of article 3.1(b) of Directive

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 documents which are not found to be publicly available in the expected location might be found at

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

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

[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

[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;

[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

[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

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

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

The following referenced documents are not necessary for the application of the present document but they assist the

[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

[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

[i.4] Recommendation ITU-T P.53: "Psophometer for use on telephone-type circuits".

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

integral antenna equipment: radio communications equipment with an antenna integrated into the equipment without

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

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

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

The test configuration and mode of operation shall represent the intended use and shall be recorded in the test report.

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

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

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

• 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

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

Frequencies on which radio communications equipment is intended to operate are excluded from immunity tests with

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

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.

NOTE 1: The exclusion band is the product of 5 times the channel spacing plus 20 times the measurement bandwidth

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

There shall be no frequency exclusion band applied to EM emission measurements of receivers.

The exclusion band extends plus and minus twice the occupied BandWidth (BW) from the centre frequency

For 25 kHz equipment the exclusion band extends ±50 kHz, for 8,33 kHz equipment ±16,7 kHz and for 12,5 kHz

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

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

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

If the receiver is then in either or both frequency offset cases in compliance with the specified performance criteria, the

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

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.

For immunity tests, narrow band responses shall be subject to spurious response rejection tests specified in the relevant

- 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

- 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;

- the receiver input signal shall be set to the nominal frequency of the receiver, modulated with a test

- the transmitter shall be modulated with a test signal which represents the intended normal operation of

- the test signal generator (modulation) shall be able to produce a continuous stream of data or a repetitive

- in the case of data equipment, the test instrumentation shall be able to produce:

 a repetitive readout of message acceptance or an indication of data throughput rate in the case of

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

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