ETSI EN 302 480 V2.2.1 (2021-09)

HARMONISED EUROPEAN STANDARD
Mobile Communication On Board Aircraft (MCOBA) systems;
Harmonised Standard for access to radio spectrum

2 ETSI EN 302 480 V2.2.1 (2021-09)

Reference
REN/MSG-TFES-1126
Keywords
3G, 3GPP, cellular, digital, E-UTRA, GSM, LTE,
MCOBA, mobile, radio, regulation, UMTS, UTRA,
WCDMA
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 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from:
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
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2021.
All rights reserved.
ETSI
3 ETSI EN 302 480 V2.2.1 (2021-09)
Contents
Intellectual Property Rights . 7
Foreword . 7
Modal verbs terminology . 8
Introduction . 8
1 Scope . 9
2 References . 10
2.1 Normative references . 10
2.2 Informative references . 11
3 Definition of terms, symbols and abbreviations . 12
3.1 Terms . 12
3.2 Symbols . 12
3.3 Abbreviations . 12
4 Technical requirements specifications . 13
4.1 Environmental profile . 13
4.2 Conformance requirements . 13
4.2.1 Introduction. 13
4.2.2 GSM-OBTS performance . 15
4.2.2.1 GSM-OBTS maximum output power . 15
4.2.2.1.1 Definition. 15
4.2.2.1.2 Limits . 15
4.2.2.1.3 Conformance . 15
4.2.2.2 GSM-OBTS output RF spectrum . 16
4.2.2.2.1 Spectrum due to modulation and wideband noise . 16
4.2.2.2.2 Spectrum due to switching transients . 16
4.2.2.3 GSM-OBTS radio frequency tolerance . 16
4.2.2.3.1 Definition. 16
4.2.2.3.2 Limits . 16
4.2.2.3.3 Conformance . 16
4.2.2.4 GSM-OBTS controlled MS RF power . 17
4.2.2.4.1 Definition. 17
4.2.2.4.2 Limits . 17
4.2.2.4.3 Conformance . 17
4.2.2.5 GSM-OBTS reference sensitivity level . 17
4.2.2.5.1 Definition. 17
4.2.2.5.2 Limits . 17
4.2.2.5.3 Conformance . 17
4.2.2.6 GSM-OBTS unwanted emissions in the spurious domain . 17
4.2.2.6.1 Definition. 17
4.2.2.6.2 Limits . 17
4.2.2.6.3 Conformance . 18
4.2.3 UTRA-OBTS performance . 18
4.2.3.1 Conformance compliance . 18
4.2.3.2 UTRA-OBTS Spectrum Mask . 18
4.2.3.2.1 Definition. 18
4.2.3.2.2 Limits . 18
4.2.3.2.3 Conformance . 18
4.2.3.3 UTRA-OBTS Adjacent Channel Leakage power Ratio (ACLR). 18
4.2.3.3.1 Definition. 18
4.2.3.3.2 Limits . 19
4.2.3.3.3 Conformance . 19
4.2.3.4 UTRA-OBTS Transmitter spurious emissions . 19
4.2.3.4.1 Definition. 19
4.2.3.4.2 Limits . 19
4.2.3.4.3 Conformance . 19
ETSI
4 ETSI EN 302 480 V2.2.1 (2021-09)
4.2.3.5 UTRA-OBTS maximum output power . 20
4.2.3.5.1 Definition. 20
4.2.3.5.2 Limits . 20
4.2.3.5.3 Conformance . 20
4.2.3.6 UTRA-OBTS Transmit intermodulation. 20
4.2.3.6.1 Definition. 20
4.2.3.6.2 Limits . 20
4.2.3.6.3 Conformance . 21
4.2.3.7 UTRA-OBTS Receiver spurious emissions . 21
4.2.3.7.1 Definition. 21
4.2.3.7.2 Limits . 21
4.2.3.7.3 Conformance . 21
4.2.3.8 UTRA-OBTS Blocking characteristics . 21
4.2.3.8.1 Definition. 21
4.2.3.8.2 Limits . 21
4.2.3.8.3 Conformance . 22
4.2.3.9 UTRA-OBTS Receiver intermodulation characteristics . 22
4.2.3.9.1 Definition. 22
4.2.3.9.2 Limits . 22
4.2.3.9.3 Conformance . 22
4.2.3.10 UTRA-OBTS Receiver adjacent channel selectivity . 22
4.2.3.10.1 Definition. 22
4.2.3.10.2 Limits . 22
4.2.3.10.3 Conformance . 23
4.2.3.11 UTRA-OBTS controlled UE RF power . 23
4.2.3.11.1 Definition. 23
4.2.3.11.2 Limits . 23
4.2.3.11.3 Conformance . 23
4.2.3.12 UTRA-OBTS reference sensitivity level . 23
4.2.3.12.1 Definition. 23
4.2.3.12.2 Limit . 23
4.2.3.12.3 Conformance . 23
4.2.4 E-UTRA-OBTS performance . 24
4.2.4.1 Conformance compliance . 24
4.2.4.2 E-UTRA-OBTS operating band unwanted emissions . 24
4.2.4.2.1 Definition. 24
4.2.4.2.2 Limits . 24
4.2.4.2.3 Conformance . 24
4.2.4.3 E-UTRA-OBTS Adjacent Channel Leakage power Ratio (ACLR) . 24
4.2.4.3.1 Definition. 24
4.2.4.3.2 Limits . 25
4.2.4.3.3 Conformance . 25
4.2.4.4 E-UTRA-OBTS transmitter spurious emissions . 25
4.2.4.4.1 Definition. 25
4.2.4.4.2 Limits . 25
4.2.4.4.3 Conformance . 26
4.2.4.5 E-UTRA-OBTS maximum output power . 26
4.2.4.5.1 Definition. 26
4.2.4.5.2 Limits . 26
4.2.4.5.3 Conformance . 26
4.2.4.6 E-UTRA-OBTS transmit intermodulation . 26
4.2.4.6.1 Definition. 26
4.2.4.6.2 Limits . 26
4.2.4.6.3 Conformance . 26
4.2.4.7 E-UTRA-OBTS receiver spurious emissions . 26
4.2.4.7.1 Definition. 26
4.2.4.7.2 Limits . 27
4.2.4.7.3 Conformance . 27
4.2.4.8 E-UTRA-OBTS Blocking characteristics . 27
4.2.4.8.1 Definition. 27
4.2.4.8.2 Limits . 27
4.2.4.8.3 Conformance . 27
ETSI
5 ETSI EN 302 480 V2.2.1 (2021-09)
4.2.4.9 E-UTRA-OBTS receiver intermodulation characteristics . 27
4.2.4.9.1 Definition. 27
4.2.4.9.2 Limits . 27
4.2.4.9.3 Conformance . 27
4.2.4.10 E-UTRA-OBTS Adjacent Channel Selectivity (ACS) and narrow-band blocking . 28
4.2.4.10.1 Definition. 28
4.2.4.10.2 Limits . 28
4.2.4.10.3 Conformance . 28
4.2.4.11 E-UTRA-OBTS controlled UE RF power . 28
4.2.4.11.1 Definition. 28
4.2.4.11.2 Limits . 28
4.2.4.11.3 Conformance . 28
4.2.4.12 E-UTRA-OBTS reference sensitivity level . 28
4.2.4.12.1 Definition. 28
4.2.4.12.2 Limits . 29
4.2.4.12.3 Conformance . 29
4.2.5 NCU Transmitter Performance . 29
4.2.5.1 NCU maximum mean power spectral density . 29
4.2.5.1.1 Definition. 29
4.2.5.1.2 Limits . 29
4.2.5.1.3 Conformance . 29
4.2.5.2 NCU power flatness . 29
4.2.5.2.1 Definition. 29
4.2.5.2.2 Limits . 29
4.2.5.2.3 Conformance . 29
4.2.5.3 NCU out-of-band emissions . 30
4.2.5.3.1 Definition. 30
4.2.5.3.2 Limits . 30
4.2.5.3.3 Conformance . 30
4.2.5.4 NCU spurious emissions . 30
4.2.5.4.1 Definition. 30
4.2.5.4.2 Limits . 31
4.2.5.4.3 Conformance . 31
4.2.6 MCOBA system performance. 31
4.2.6.1 MCOBA Unwanted emissions in the out-of-band domain . 31
4.2.6.1.1 Definition. 31
4.2.6.1.2 Limits . 31
4.2.6.2 MCOBA Unwanted emissions in the spurious domain . 32
4.2.6.2.1 Definition. 32
4.2.6.2.2 Limits . 32
4.2.6.3 MCOBA Cessation of emission . 32
4.2.6.3.1 Definition. 32
4.2.6.3.2 Specification . 32
4.2.6.3.3 Conformance . 32
5 Testing for compliance with technical requirements . 32
5.1 Environmental conditions for testing . 32
5.2 Essential radio test suites . 33
5.2.0 Measurement options . 33
5.2.1 GSM-OBTS Performance . 33
5.2.1.1 GSM-OBTS controlled UE/MS RF power . 33
5.2.1.1.1 Test purpose . 33
5.2.1.1.2 Methods of measurement. 34
5.2.2 UTRA-OBTS Transmitter Performance . 35
5.2.2.1 UTRA-OBTS controlled UE RF power . 35
5.2.2.1.1 Test purpose . 35
5.2.2.1.2 Methods of measurement. 35
5.2.3 E-UTRA-OBTS Transmitter Performance . 36
5.2.3.1 E-UTRA-OBTS-controlled UE RF power . 36
5.2.3.1.1 Test Purpose . 36
5.2.3.1.2 Test Procedure . 36
5.2.4 NCU Transmitter Performance . 37
ETSI
6 ETSI EN 302 480 V2.2.1 (2021-09)
5.2.4.1 NCU maximum mean power spectral density . 37
5.2.4.1.1 Test purpose . 37
5.2.4.1.2 Methods of measurement. 37
5.2.4.2 NCU power flatness . 38
5.2.4.2.1 Test purpose . 38
5.2.4.2.2 Methods of measurement. 38
5.2.5 MCOBA Transmitter Performance . 39
5.2.5.1 MCOBA Unwanted emissions in the out-of-band domain . 39
5.2.5.1.1 Test purpose . 39
5.2.5.1.2 Methods of measurement. 39
5.2.5.2 MCOBA Unwanted emissions in the spurious domain . 41
5.2.5.2.1 Test purpose . 41
5.2.5.2.2 Methods of measurement. 41
5.2.5.3 MCOBA Cessation of emissions . 42
5.2.5.3.1 Test purpose . 42
5.2.5.3.2 Methods of measurement. 42
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 44
Annex B (normative): Environmental conditions . 46
B.1 General . 46
B.2 Environmental conformance requirements. 46
B.3 Environmental test conditions . 46
Annex C (informative): System Description . 47
C.1 High level System Description . 47
C.2 OBTS . 48
C.3 RF Screening . 48
C.4 Dedicated antenna system . 49
C.5 Dedicated antenna installation . 49
C.6 MCOBA system states . 49
Annex D (informative): Maximum measurement uncertainty . 51
Annex E (informative): Bibliography . 52
Annex F (informative): Change history . 53
History . 54

ETSI
7 ETSI EN 302 480 V2.2.1 (2021-09)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be
found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to
ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI Web server (https://ipr.etsi.org/).
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its

Members. 3GPP™ 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.
Foreword
This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Mobile Standards Group
(MSG).
For non EU countries the present document may be used for regulatory (Type Approval) purposes.
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.10] 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.
National transposition dates
Date of adoption of this EN: 20 September 2021
Date of latest announcement of this EN (doa): 31 December 2021
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 June 2022
Date of withdrawal of any conflicting National Standard (dow): 30 June 2023

ETSI
8 ETSI EN 302 480 V2.2.1 (2021-09)
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
Introduction
The present document is part of a set of standards developed by ETSI that are designed to cover radio equipment within
the scope of the Radio Equipment Directive 2014/53/EU [i.1]. The present document is produced following the
guidance in ETSI EG 203 336 [i.2] as applicable.
Please refer to annex C for the structure of this system and further technical explanations.

ETSI
9 ETSI EN 302 480 V2.2.1 (2021-09)
1 Scope
The present document specifies technical characteristics and methods of measurements for the following equipment
types (which are parts of a Mobile Communication On Board Aircraft system):
1) The Onboard Base Transceiver Station (OBTS) supporting GSM and/or UMTS, and/or LTE communication
protocols including specific functions for restricting the transmit power of the MSs or UEs, associated with the
OBTS.
2) The Network Control Unit (NCU) preventing direct connection of the onboard mobile terminals with mobile
networks on the ground by raising the noise floor in the cabin.
The OBTSs are capable of operating in all or any part of the frequency bands given in table 1-1.
Table 1-1: Base Station operating bands
Band Direction of transmission Base Station operating bands
designation
BS Transmit 2 110 MHz to 2 170 MHz (UMTS)
UTRA I
BS Receive 1 920 MHz to 1 980 MHz (UMTS)
BS Transmit 1 805 MHz to 1 880 MHz (LTE)
E-UTRA 3
BS Receive 1 710 MHz to 1 785 MHz (LTE)
BS Transmit 1 805 MHz to 1 880 MHz (GSM)
DCS 1800
BS Receive 1 710 MHz to 1 785 MHz (GSM)

The NCU is capable of operating in all of the frequency bands given in table 1-2.
Table 1-2: NCU operating bands
NCU operating bands Comment
460 MHz to 470 MHz (see note)
791 MHz to 821 MHz (see note) LTE
925 MHz to 960 MHz GSM
1 805 MHz to 1 880 MHz (see note) GSM/LTE
2 110 MHz to 2 170 MHz UMTS
2 570 MHz to 2 620 MHz (see note) LTE
2 620 MHz to 2 690 MHz (see note) LTE
NOTE: Implementation of this operating band in a NCU is not mandatory
according to the EC Decision [i.4].

The present document applies only to radio equipment using a dedicated transmitting antenna that is designed as an
indispensable part of the system for usage on board an aircraft.
It applies to equipment for continuous and discontinuous transmission of data and digital speech.
Within the European Union, the system covered by the present document operates in accordance with the operational
requirements as outlined in the Commission Decision 2016/2317/EU [i.4] based on the former Decision 2013/654 [i.3].
In relation the NCU, some frequency bands are now optional while they were mandatory before. Due to this difference
the present document had to be reviewed.
The present document contains requirements to ensure that such Radio equipment both effectively uses and supports the
efficient use of radio spectrum in order to avoid harmful interference.
In addition to the present document, other ENs that specify technical requirements in respect of essential requirements
under other parts of article 3 of the Radio Equipment Directive [i.1] may apply to equipment within the scope of the
present document.
The present document does not cover equipment compliance with relevant civil aviation regulations. In this respect, a
MCOBA system, for its installation and operation on board an aircraft is subject to additional national or international
civil aviation airworthiness certification requirements, for example to EUROCAE ED-14G [i.7].
ETSI
10 ETSI EN 302 480 V2.2.1 (2021-09)
NOTE: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.1] is given in annex A.
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 301 908-14 (V13.1.1) (09-2019): "IMT cellular networks; Harmonised Standard for
access to radio spectrum; Part 14: Evolved Universal Terrestrial Radio Access (E-UTRA) Base
Stations (BS)".
[2] ETSI TS 145 005 (V14.7.0) (04-2020): "Digital cellular telecommunications system (Phase 2+)
(GSM); GSM/EDGE Radio transmission and reception (3GPP TS 45.005 version 14.7.0
Release 14)".
[3] ETSI TS 145 010 (V14.5.0) (04-2020): "Digital cellular telecommunications system (Phase 2+)
(GSM); GSM/EDGE Radio subsystem synchronization (3GPP TS 45.010 version 14.5.0
Release 14)".
[4] ETSI TS 145 008 (V14.10.0) (04-2020): "Digital cellular telecommunications system (Phase 2+)
(GSM); GSM/EDGE Radio subsystem link control (3GPP TS 45.008 version 14.10.0
Release 14)".
[5] ETSI
...

SLOVENSKI STANDARD
01-november-2021
Sistemi mobilnih komunikacij v letalih (MCOBA) - Harmonizirani standard za
dostop do radijskega spektra
Mobile Communication On Board Aircraft (MCOBA) systems - Harmonised Standard for
access to radio spectrum
Ta slovenski standard je istoveten z: ETSI EN 302 480 V2.2.1 (2021-09)
ICS:
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
33.070.99 Druge mobilne storitve Other mobile services
49.090 Oprema in instrumenti v On-board equipment and
zračnih in vesoljskih plovilih instruments
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

HARMONISED EUROPEAN STANDARD
Mobile Communication On Board Aircraft (MCOBA) systems;
Harmonised Standard for access to radio spectrum

2 ETSI EN 302 480 V2.2.1 (2021-09)

Reference
REN/MSG-TFES-1126
Keywords
3G, 3GPP, cellular, digital, E-UTRA, GSM, LTE,
MCOBA, mobile, radio, regulation, UMTS, UTRA,
WCDMA
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 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from:
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
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2021.
All rights reserved.
ETSI
3 ETSI EN 302 480 V2.2.1 (2021-09)
Contents
Intellectual Property Rights . 7
Foreword . 7
Modal verbs terminology . 8
Introduction . 8
1 Scope . 9
2 References . 10
2.1 Normative references . 10
2.2 Informative references . 11
3 Definition of terms, symbols and abbreviations . 12
3.1 Terms . 12
3.2 Symbols . 12
3.3 Abbreviations . 12
4 Technical requirements specifications . 13
4.1 Environmental profile . 13
4.2 Conformance requirements . 13
4.2.1 Introduction. 13
4.2.2 GSM-OBTS performance . 15
4.2.2.1 GSM-OBTS maximum output power . 15
4.2.2.1.1 Definition. 15
4.2.2.1.2 Limits . 15
4.2.2.1.3 Conformance . 15
4.2.2.2 GSM-OBTS output RF spectrum . 16
4.2.2.2.1 Spectrum due to modulation and wideband noise . 16
4.2.2.2.2 Spectrum due to switching transients . 16
4.2.2.3 GSM-OBTS radio frequency tolerance . 16
4.2.2.3.1 Definition. 16
4.2.2.3.2 Limits . 16
4.2.2.3.3 Conformance . 16
4.2.2.4 GSM-OBTS controlled MS RF power . 17
4.2.2.4.1 Definition. 17
4.2.2.4.2 Limits . 17
4.2.2.4.3 Conformance . 17
4.2.2.5 GSM-OBTS reference sensitivity level . 17
4.2.2.5.1 Definition. 17
4.2.2.5.2 Limits . 17
4.2.2.5.3 Conformance . 17
4.2.2.6 GSM-OBTS unwanted emissions in the spurious domain . 17
4.2.2.6.1 Definition. 17
4.2.2.6.2 Limits . 17
4.2.2.6.3 Conformance . 18
4.2.3 UTRA-OBTS performance . 18
4.2.3.1 Conformance compliance . 18
4.2.3.2 UTRA-OBTS Spectrum Mask . 18
4.2.3.2.1 Definition. 18
4.2.3.2.2 Limits . 18
4.2.3.2.3 Conformance . 18
4.2.3.3 UTRA-OBTS Adjacent Channel Leakage power Ratio (ACLR). 18
4.2.3.3.1 Definition. 18
4.2.3.3.2 Limits . 19
4.2.3.3.3 Conformance . 19
4.2.3.4 UTRA-OBTS Transmitter spurious emissions . 19
4.2.3.4.1 Definition. 19
4.2.3.4.2 Limits . 19
4.2.3.4.3 Conformance . 19
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4 ETSI EN 302 480 V2.2.1 (2021-09)
4.2.3.5 UTRA-OBTS maximum output power . 20
4.2.3.5.1 Definition. 20
4.2.3.5.2 Limits . 20
4.2.3.5.3 Conformance . 20
4.2.3.6 UTRA-OBTS Transmit intermodulation. 20
4.2.3.6.1 Definition. 20
4.2.3.6.2 Limits . 20
4.2.3.6.3 Conformance . 21
4.2.3.7 UTRA-OBTS Receiver spurious emissions . 21
4.2.3.7.1 Definition. 21
4.2.3.7.2 Limits . 21
4.2.3.7.3 Conformance . 21
4.2.3.8 UTRA-OBTS Blocking characteristics . 21
4.2.3.8.1 Definition. 21
4.2.3.8.2 Limits . 21
4.2.3.8.3 Conformance . 22
4.2.3.9 UTRA-OBTS Receiver intermodulation characteristics . 22
4.2.3.9.1 Definition. 22
4.2.3.9.2 Limits . 22
4.2.3.9.3 Conformance . 22
4.2.3.10 UTRA-OBTS Receiver adjacent channel selectivity . 22
4.2.3.10.1 Definition. 22
4.2.3.10.2 Limits . 22
4.2.3.10.3 Conformance . 23
4.2.3.11 UTRA-OBTS controlled UE RF power . 23
4.2.3.11.1 Definition. 23
4.2.3.11.2 Limits . 23
4.2.3.11.3 Conformance . 23
4.2.3.12 UTRA-OBTS reference sensitivity level . 23
4.2.3.12.1 Definition. 23
4.2.3.12.2 Limit . 23
4.2.3.12.3 Conformance . 23
4.2.4 E-UTRA-OBTS performance . 24
4.2.4.1 Conformance compliance . 24
4.2.4.2 E-UTRA-OBTS operating band unwanted emissions . 24
4.2.4.2.1 Definition. 24
4.2.4.2.2 Limits . 24
4.2.4.2.3 Conformance . 24
4.2.4.3 E-UTRA-OBTS Adjacent Channel Leakage power Ratio (ACLR) . 24
4.2.4.3.1 Definition. 24
4.2.4.3.2 Limits . 25
4.2.4.3.3 Conformance . 25
4.2.4.4 E-UTRA-OBTS transmitter spurious emissions . 25
4.2.4.4.1 Definition. 25
4.2.4.4.2 Limits . 25
4.2.4.4.3 Conformance . 26
4.2.4.5 E-UTRA-OBTS maximum output power . 26
4.2.4.5.1 Definition. 26
4.2.4.5.2 Limits . 26
4.2.4.5.3 Conformance . 26
4.2.4.6 E-UTRA-OBTS transmit intermodulation . 26
4.2.4.6.1 Definition. 26
4.2.4.6.2 Limits . 26
4.2.4.6.3 Conformance . 26
4.2.4.7 E-UTRA-OBTS receiver spurious emissions . 26
4.2.4.7.1 Definition. 26
4.2.4.7.2 Limits . 27
4.2.4.7.3 Conformance . 27
4.2.4.8 E-UTRA-OBTS Blocking characteristics . 27
4.2.4.8.1 Definition. 27
4.2.4.8.2 Limits . 27
4.2.4.8.3 Conformance . 27
ETSI
5 ETSI EN 302 480 V2.2.1 (2021-09)
4.2.4.9 E-UTRA-OBTS receiver intermodulation characteristics . 27
4.2.4.9.1 Definition. 27
4.2.4.9.2 Limits . 27
4.2.4.9.3 Conformance . 27
4.2.4.10 E-UTRA-OBTS Adjacent Channel Selectivity (ACS) and narrow-band blocking . 28
4.2.4.10.1 Definition. 28
4.2.4.10.2 Limits . 28
4.2.4.10.3 Conformance . 28
4.2.4.11 E-UTRA-OBTS controlled UE RF power . 28
4.2.4.11.1 Definition. 28
4.2.4.11.2 Limits . 28
4.2.4.11.3 Conformance . 28
4.2.4.12 E-UTRA-OBTS reference sensitivity level . 28
4.2.4.12.1 Definition. 28
4.2.4.12.2 Limits . 29
4.2.4.12.3 Conformance . 29
4.2.5 NCU Transmitter Performance . 29
4.2.5.1 NCU maximum mean power spectral density . 29
4.2.5.1.1 Definition. 29
4.2.5.1.2 Limits . 29
4.2.5.1.3 Conformance . 29
4.2.5.2 NCU power flatness . 29
4.2.5.2.1 Definition. 29
4.2.5.2.2 Limits . 29
4.2.5.2.3 Conformance . 29
4.2.5.3 NCU out-of-band emissions . 30
4.2.5.3.1 Definition. 30
4.2.5.3.2 Limits . 30
4.2.5.3.3 Conformance . 30
4.2.5.4 NCU spurious emissions . 30
4.2.5.4.1 Definition. 30
4.2.5.4.2 Limits . 31
4.2.5.4.3 Conformance . 31
4.2.6 MCOBA system performance. 31
4.2.6.1 MCOBA Unwanted emissions in the out-of-band domain . 31
4.2.6.1.1 Definition. 31
4.2.6.1.2 Limits . 31
4.2.6.2 MCOBA Unwanted emissions in the spurious domain . 32
4.2.6.2.1 Definition. 32
4.2.6.2.2 Limits . 32
4.2.6.3 MCOBA Cessation of emission . 32
4.2.6.3.1 Definition. 32
4.2.6.3.2 Specification . 32
4.2.6.3.3 Conformance . 32
5 Testing for compliance with technical requirements . 32
5.1 Environmental conditions for testing . 32
5.2 Essential radio test suites . 33
5.2.0 Measurement options . 33
5.2.1 GSM-OBTS Performance . 33
5.2.1.1 GSM-OBTS controlled UE/MS RF power . 33
5.2.1.1.1 Test purpose . 33
5.2.1.1.2 Methods of measurement. 34
5.2.2 UTRA-OBTS Transmitter Performance . 35
5.2.2.1 UTRA-OBTS controlled UE RF power . 35
5.2.2.1.1 Test purpose . 35
5.2.2.1.2 Methods of measurement. 35
5.2.3 E-UTRA-OBTS Transmitter Performance . 36
5.2.3.1 E-UTRA-OBTS-controlled UE RF power . 36
5.2.3.1.1 Test Purpose . 36
5.2.3.1.2 Test Procedure . 36
5.2.4 NCU Transmitter Performance . 37
ETSI
6 ETSI EN 302 480 V2.2.1 (2021-09)
5.2.4.1 NCU maximum mean power spectral density . 37
5.2.4.1.1 Test purpose . 37
5.2.4.1.2 Methods of measurement. 37
5.2.4.2 NCU power flatness . 38
5.2.4.2.1 Test purpose . 38
5.2.4.2.2 Methods of measurement. 38
5.2.5 MCOBA Transmitter Performance . 39
5.2.5.1 MCOBA Unwanted emissions in the out-of-band domain . 39
5.2.5.1.1 Test purpose . 39
5.2.5.1.2 Methods of measurement. 39
5.2.5.2 MCOBA Unwanted emissions in the spurious domain . 41
5.2.5.2.1 Test purpose . 41
5.2.5.2.2 Methods of measurement. 41
5.2.5.3 MCOBA Cessation of emissions . 42
5.2.5.3.1 Test purpose . 42
5.2.5.3.2 Methods of measurement. 42
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 44
Annex B (normative): Environmental conditions . 46
B.1 General . 46
B.2 Environmental conformance requirements. 46
B.3 Environmental test conditions . 46
Annex C (informative): System Description . 47
C.1 High level System Description . 47
C.2 OBTS . 48
C.3 RF Screening . 48
C.4 Dedicated antenna system . 49
C.5 Dedicated antenna installation . 49
C.6 MCOBA system states . 49
Annex D (informative): Maximum measurement uncertainty . 51
Annex E (informative): Bibliography . 52
Annex F (informative): Change history . 53
History . 54

ETSI
7 ETSI EN 302 480 V2.2.1 (2021-09)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be
found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to
ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI Web server (https://ipr.etsi.org/).
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its

Members. 3GPP™ 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.
Foreword
This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Mobile Standards Group
(MSG).
For non EU countries the present document may be used for regulatory (Type Approval) purposes.
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.10] 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.
National transposition dates
Date of adoption of this EN: 20 September 2021
Date of latest announcement of this EN (doa): 31 December 2021
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 June 2022
Date of withdrawal of any conflicting National Standard (dow): 30 June 2023

ETSI
8 ETSI EN 302 480 V2.2.1 (2021-09)
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
Introduction
The present document is part of a set of standards developed by ETSI that are designed to cover radio equipment within
the scope of the Radio Equipment Directive 2014/53/EU [i.1]. The present document is produced following the
guidance in ETSI EG 203 336 [i.2] as applicable.
Please refer to annex C for the structure of this system and further technical explanations.

ETSI
9 ETSI EN 302 480 V2.2.1 (2021-09)
1 Scope
The present document specifies technical characteristics and methods of measurements for the following equipment
types (which are parts of a Mobile Communication On Board Aircraft system):
1) The Onboard Base Transceiver Station (OBTS) supporting GSM and/or UMTS, and/or LTE communication
protocols including specific functions for restricting the transmit power of the MSs or UEs, associated with the
OBTS.
2) The Network Control Unit (NCU) preventing direct connection of the onboard mobile terminals with mobile
networks on the ground by raising the noise floor in the cabin.
The OBTSs are capable of operating in all or any part of the frequency bands given in table 1-1.
Table 1-1: Base Station operating bands
Band Direction of transmission Base Station operating bands
designation
BS Transmit 2 110 MHz to 2 170 MHz (UMTS)
UTRA I
BS Receive 1 920 MHz to 1 980 MHz (UMTS)
BS Transmit 1 805 MHz to 1 880 MHz (LTE)
E-UTRA 3
BS Receive 1 710 MHz to 1 785 MHz (LTE)
BS Transmit 1 805 MHz to 1 880 MHz (GSM)
DCS 1800
BS Receive 1 710 MHz to 1 785 MHz (GSM)

The NCU is capable of operating in all of the frequency bands given in table 1-2.
Table 1-2: NCU operating bands
NCU operating bands Comment
460 MHz to 470 MHz (see note)
791 MHz to 821 MHz (see note) LTE
925 MHz to 960 MHz GSM
1 805 MHz to 1 880 MHz (see note) GSM/LTE
2 110 MHz to 2 170 MHz UMTS
2 570 MHz to 2 620 MHz (see note) LTE
2 620 MHz to 2 690 MHz (see note) LTE
NOTE: Implementation of this operating band in a NCU is not mandatory
according to the EC Decision [i.4].

The present document applies only to radio equipment using a dedicated transmitting antenna that is designed as an
indispensable part of the system for usage on board an aircraft.
It applies to equipment for continuous and discontinuous transmission of data and digital speech.
Within the European Union, the system covered by the present document operates in accordance with the operational
requirements as outlined in the Commission Decision 2016/2317/EU [i.4] based on the former Decision 2013/654 [i.3].
In relation the NCU, some frequency bands are now optional while they were mandatory before. Due to this difference
the present document had to be reviewed.
The present document contains requirements to ensure that such Radio equipment both effectively uses and supports the
efficient use of radio spectrum in order to avoid harmful interference.
In addition to the present document, other ENs that specify technical requirements in respect of essential requirements
under other parts of article 3 of the Radio Equipment Directive [i.1] may apply to equipment within the scope of the
present document.
The present document does not cover equipment compliance with relevant civil aviation regulations. In this respect, a
MCOBA system, for its installation and operation on board an aircraft is subject to additional national or international
civil aviation airworthiness certification requirements, for example to EUROCAE ED-14G [i.7].
ETSI
10 ETSI EN 302 480 V2.2.1 (2021-09)
NOTE: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.1] is given in annex A.
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 amen
...