ETSI EN 303 489 V1.0.0 (2025-05)

Air Traffic Control Surveillance; Wide Area Multilateration (WAM) systems operating at 1 030 MHz and 1 090 MHz; Harmonised Standard for access to radio spectrum

DEN/ERM-TGAERO-36

Nadzor zračnega prometa - Sistemi za širokopasovno multilateracijo (WAM), ki delujejo v območju 1030 MHz in 1090 MHz - Harmonizirani standard za dostop do radijskega spektra

General Information

• Status: Not Published
• Technical Committee: ERM TGAERO - Aeronautics
• Ref Project: oSIST prEN 303 489 V1.0.0:2025 - Air Traffic Control Surveillance - Wide Area Multilateration (WAM) systems operating at 1 030 MHz and 1 090 MHz - Harmonised Standard for access to radio spectrum

Standards Content (Sample)

Draft ETSI EN 303 489 V1.0.0 (2025-05)

HARMONISED EUROPEAN STANDARD
Air Traffic Control Surveillance;
Wide Area Multilateration (WAM) systems operating
at 1 030 MHz and 1 090 MHz;
Harmonised Standard for access to radio spectrum

2 Draft ETSI EN 303 489 V1.0.0 (2025-05)

Reference
DEN/ERM-TGAERO-36
Keywords
aeronautical, harmonised standard, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from the
ETSI Search & Browse Standards application.
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format on ETSI deliver repository.
Users should be aware that the present document may be revised or have its status changed,
this information is available in the Milestones listing.
If you find errors in the present document, please send your comments to
the relevant service listed under Committee Support Staff.
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure (CVD) program.
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

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

© ETSI 2025.
All rights reserved.
ETSI
3 Draft ETSI EN 303 489 V1.0.0 (2025-05)
Contents
Intellectual Property Rights . 7
Foreword . 7
Modal verbs terminology . 8
Introduction . 8
1 Scope . 9
2 References . 9
2.1 Normative references . 9
2.2 Informative references . 10
3 Definition of terms, symbols and abbreviations . 10
3.1 Terms . 10
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 Applicability . 13
4.2.1.1 Equipment with and without integral antenna . 13
4.2.1.2 Equipment with multiple functions . 13
4.2.2 Transmitter requirements . 13
4.2.2.1 Operating frequency and frequency error . 13
4.2.2.1.1 Definition. 13
4.2.2.1.2 Limits . 13
4.2.2.1.3 Conformance . 14
4.2.2.2 Spectrum mask . 14
4.2.2.2.1 Definition. 14
4.2.2.2.2 Limits . 14
4.2.2.2.3 Conformance . 15
4.2.2.3 Residual power output. 15
4.2.2.3.1 Definition. 15
4.2.2.3.2 Limits . 15
4.2.2.3.3 Conformance . 16
4.2.2.4 Spurious emissions in active mode . 16
4.2.2.4.1 Definition. 16
4.2.2.4.2 Limits . 16
4.2.2.4.3 Conformance . 16
4.2.2.5 Intermodulation attenuation . 16
4.2.2.5.1 Definition. 16
4.2.2.5.2 Limits . 16
4.2.2.5.3 Conformance . 16
4.2.2.6 Pulse Shape and Spacing . 17
4.2.2.6.1 Definition. 17
4.2.2.6.2 Limits . 17
4.2.2.6.3 Conformance . 19
4.2.2.7 Duty cycle . 19
4.2.2.7.1 Definition. 19
4.2.2.7.2 Limits . 19
4.2.2.7.3 Conformance . 20
4.2.2.8 Peak output power . 20
4.2.2.8.1 Definition. 20
4.2.2.8.2 Limits . 20
4.2.2.8.3 Conformance . 20
4.2.3 Receiver requirements . 20
4.2.3.1 Sensitivity variation over the operating frequency range . 20
4.2.3.1.1 Definition. 20
ETSI
4 Draft ETSI EN 303 489 V1.0.0 (2025-05)
4.2.3.1.2 Limits . 20
4.2.3.1.3 Conformance . 20
4.2.3.2 RF selectivity and spurious response rejection . 21
4.2.3.2.1 Definition. 21
4.2.3.2.2 Limits . 21
4.2.3.2.3 Conformance . 21
4.2.3.3 Inter-modulation response rejection . 21
4.2.3.3.1 Definition. 21
4.2.3.3.2 Limits . 21
4.2.3.3.3 Conformance . 21
4.2.3.4 Co-channel rejection . 22
4.2.3.4.1 Definition. 22
4.2.3.4.2 Limits . 22
4.2.3.4.3 Conformance . 22
4.2.3.5 Blocking . 22
4.2.3.5.1 Definition. 22
4.2.3.5.2 Limits . 22
4.2.3.5.3 Conformance . 22
4.2.3.6 Sensitivity .
...