Radio data system (RDS) - VHF/FM sound broadcasting in the frequency range from 64,0 MHz to 108,0 MHz - Part 6: Compilation of technical specifications for Open Data Applications in the public domain

IEC 62106-6:2018 contains the technical specifications for Open Data Applications in the public domain. This document is maintained by the RDS Forum Office. The RDS Forum Office applies an easy procedure for registering new Open Data Applications, to ensure that they can be used without the need to change the RDS standard. The ODA feature permits defining new applications that can be decoded on a receiver. The receiver needs to the adequate software handler for the specific AID, which identifies the application. Receivers that have not implemented the software handler needed for decoding are not affected by ODA data received for any of the applications already defined and specified.
The procedure for registering a new ODA is described in IEC 62106-3.
IEC 62106-6:2018 together with IEC 62106-1, IEC 62106-2, IEC 62106-3, IEC 62106-4 and IEC 62106-5, cancels and replaces IEC 62106:2015, and constitutes a technical revision.
This edition includes the following significant technical changes with respect to IEC 62106:2015:
• Provision has been made to carry RDS on multiple data-streams (RDS2);
• New are AF coding below 87,5 MHz (down to 64,0 MHz) using ODA-AID 0x6365;
• RT+ can now be used simultaneously for RT and eRT, each having its own RT+ ODA;
• Data-streams 1, 2 and 3 are exclusively UTF-8 coded. For backwards compatibility, UCS-2 encoded eRT on data-stream 0 is retained.

General Information

Status
Published
Publication Date
25-Sep-2018
Current Stage
DELPUB - Deleted Publication
Start Date
22-Jul-2022
Completion Date
26-May-2023
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IEC 62106-6:2018 - Radio data system (RDS) - VHF/FM sound broadcasting in the frequency range from 64,0 MHz to 108,0 MHz - Part 6: Compilation of technical specifications for Open Data Applications in the public domain
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IEC 62106-6 ®
Edition 1.0 2018-09
INTERNATIONAL
STANDARD
Radio data system (RDS) – VHF/FM sound broadcasting in the frequency range
from 64,0 MHz to 108,0 MHz –
Part 6: Compilation of technical specifications for Open Data Applications in the
public domain
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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IEC 62106-6 ®
Edition 1.0 2018-09
INTERNATIONAL
STANDARD
Radio data system (RDS) – VHF/FM sound broadcasting in the frequency range

from 64,0 MHz to 108,0 MHz –
Part 6: Compilation of technical specifications for Open Data Applications in the

public domain
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.160.40 ISBN 978-2-8322-6071-5

– 2 – IEC 62106-6:2018 © IEC 2018
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions, abbreviated terms and conventions . 7
3.1 Terms and definitions . 7
3.2 Abbreviated terms . 7
3.3 Notation and conventions . 8
4 ODAs in the public domain . 8
4.1 ODAs in the 37-bit ODA application group structure . 8
4.1.1 Traffic Message Channel (TMC) . 8
4.1.2 Other public ODAs . 8
4.2 ODAs in the group type C structure for the upper data-streams 1, 2 and 3 . 8
Annex A (normative) Coding of RadioText Plus (RT+) tagging information for
RadioText in group type 2A/B . 9
A.1 General . 9
A.2 Terms used . 9
A.3 RT+ tag. 10
A.4 RT+ information elements and data model . 11
A.4.1 General . 11
A.4.2 List of RT content types . 11
A.4.3 Structures of RT+ messages . 12
A.4.4 Receiver data model . 13
A.5 RT+ coding for RT . 15
A.5.1 General . 15
A.5.2 RT+ identification (group type 3A) . 15
A.5.3 Coding of the RT+ tag . 16
A.5.4 Clearing of RT+ messages. 17
A.6 Broadcasting conventions . 20
A.7 Receiving conventions . 20
A.8 Marking . 20
Annex B (normative) Coding of RadioText Plus(RT+) tagging information for
RadioText in the eRT ODA of Annex C . 21
Annex C (normative) Coding of enhanced RadioText (eRT) . 22
C.1 General . 22
C.2 Coding eRT in ODA groups . 22
C.2.1 General . 22
C.2.2 eRT identification (Group type 3A) and coding of the text string . 22
C.2.3 Coding of the eRT text string . 23
C.2.4 UTF-8 decoding problems when used with RT+ . 24
C.3 Broadcasting conventions . 25
C.4 Receiving conventions . 25
C.5 Marking . 25
Annex D (normative) Coding of AF lists in the frequency range 64,1 MHz to 107,9
MHz: ODA-AF . 26
D.1 Objective to be achieved . 26
D.2 Description of the coding process . 26

D.2.1 ODA-AF identification (group type 3A) . 26
D.2.2 AF coding in the application group . 27
D.2.3 AF method A. 29
D.2.4 AF method B. 29
D.2.5 Convention for identification of the AF method used . 30

Figure A.1 – Example 1: RT+ information of the category 'Item' (see Table A.2) will be
attached to the programme elements Item 1 and Item 2 . 14
Figure A.2 – Example 2: RT+ information of the category 'Item' will be attached to the
programme elements Item 1 and Item 2, but not to the programme element News . 14
Figure A.3 – Example 3: RT+ information of the category 'Item' will be attached only to

the programme element Item 1, but not to the programme element Talk . 14
Figure A.4 – Bit allocation for group 3A (message bits and AID) . 15
Figure A.5 – Coding of the message bits of the application group . 16
Figure C.1 – Bit allocation for group 3A (message bits and AID) . 23
Figure C.2 – Coding of the message bits of the application group type A . 24
Figure D.1 – New ODA-AF – group type 3A . 26
Figure D.2 – New ODA-AF application group – group type A . 27

Table A.1 – RT+ information elements for RT . 9
Table A.2 – Code list and 'RT+ class' description of RT content types (1 of 3) . 18
Table B.1 – RT+ information elements for eRT . 21
Table C.1 – eRT information elements . 22
Table D.1 – 9-bit AF code table for VHF Band I (64,0 MHz to 88,0 MHz) . 27
Table D.2 – 9-bit AF code table for VHF Band II (87,5 MHz to 108 MHz) . 27
Table D.3 – 9-bit special meanings code table . 28
Table D.4 – LF/MF code table – ITU regions 1 and 3 (9 kHz spacing) . 28
Table D.5 – MF code table – ITU region 2 (10 kHz spacing) . 28

– 4 – IEC 62106-6:2018 © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RADIO DATA SYSTEM (RDS) –
VHF/FM SOUND BROADCASTING IN THE FREQUENCY
RANGE FROM 64,0 MHz TO 108,0 MHz –

Part 6: Compilation of technical specifications
for Open Data Applications in the public domain

FOREWORD
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