EN 62106:2015

SLOVENSKI STANDARD
01-september-2015
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Specification of the radio data system (RDS) for VHF/FM sound broadcasting in the
frequency range from 87,5 MHz to 108,0 MHz (IEC 62106:2015)
Spezifikation des Radio-Daten-Systems (RDS) für den VHF/FM-Tonrundfunk im
Frequenzbereich 87,5 MHz bis 108,0 MHz (IEC 62106:2015)
Spécification des systèmes des radiocommunications des données (RDS) pour la
radiodiffusion VHF/FM dans la plage de fréquences comprise entre 87,5 MHz et 108,0
MHz (IEC 62106:2015)
Ta slovenski standard je istoveten z: EN 62106:2015
ICS:
33.170 Televizijska in radijska Television and radio
difuzija broadcasting
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 62106
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2015
ICS 33.160.40 Supersedes EN 62106:2009
English Version
Specification of the radio data system (RDS)
for VHF/FM sound broadcasting in the frequency range
from 87,5 MHz to 108,0 MHz
(IEC 62106:2015)
Spécification du système de radiodiffusion de données Spezifikation des Radio-Daten-Systems (RDS)
(RDS) pour la radiodiffusion sonore VHF/FM dans la bande für den VHF/FM-Tonrundfunk im Frequenzbereich
de fréquences de 87,5 MHz à 108,0 MHz 87,5 MHz bis 108,0 MHz
(IEC 62106:2015) (IEC 62106:2015)
This European Standard was approved by CENELEC on 2015-05-04. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 62106:2015 E
Foreword
The text of document 100/2122A/CDV, future edition 3 of IEC 62106, prepared by Technical Area 1
"Terminals for audio, video and data services and contents" of IEC/TC 100 "Audio, video and
multimedia systems and equipment" was submitted to the IEC-CENELEC parallel vote and approved
by CENELEC as EN 62106:2015.
The following dates are fixed:
• latest date by which the document has to be (dop) 2016-02-04
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2018-05-04
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 62106:2009.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 62106:2015 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated :

IEC 62634 NOTE Harmonized as EN 62634.
ISO 3166 Series NOTE Only Part 1 harmonized as EN ISO 3166-1.

- 3 - EN 62106:2015
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu
Publication Year Title EN/HD Year

ISO/IEC 10646 2014 Information technology - Universal Coded - -
Character Set (UCS)
ISO 14819 Series Intelligent transport systems - Traffic and EN ISO 14819 Series
travel information messages via traffic
message coding
ITU-R -  Transmission standards for FM sound - -
Recommendation broadcasting at VHF
BS.450-3
ITU-R -  Radio data system for automatic tuning - -
Recommendation and other applications in FM radio
BS.643-3 receivers for use with pilot-tone system
ITU-T -  The international identification plan for - -
Recommendation public networks and subscriptions:
E.212
For the three digit Mobile Country Codes
used in Annex M of this RDS specification
refer to Complement to ITU-T Rec. E.212
(05/2004) published by ITU Geneva as
Annex to ITU Operational Bulletin 897,
dated 2007-12-01
US NRSC-4-B National Radio Systems Committee -
NRSC-4-A: United States RBDS standard
ETSI EN 301 700 -  Digital Audio Broadcasting (DAB);VHF/FM - -
Broadcasting: cross-referencing to
simulcast DAB services by RDS-ODA 147

IEC 62106 ®
Edition 3.0 2015-03
INTERNATIONAL
STANDARD
Specification of the radio data system (RDS) for VHF/FM sound broadcasting in

the frequency range from 87,5 MHz to 108,0 MHz

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.160.40 ISBN 978-2-8322-2544-8

– 2 – IEC 62106:2015 © IEC 2015
CONTENTS
FOREWORD. 9
INTRODUCTION . 11
1 Scope . 12
2 Normative references. 12
3 Abbreviations . 12
4 Modulation characteristics of the data channel (physical layer) . 13
4.1 General . 13
4.2 Subcarrier frequency . 14
4.3 Subcarrier phase . 15
4.4 Subcarrier level . 15
4.5 Method of modulation . 15
4.6 Clock-frequency and data-rate . 15
4.7 Differential coding . 16
4.8 Data-channel spectrum shaping . 16
5 Baseband coding (data-link layer) . 19
5.1 Baseband coding structure . 19
5.2 Order of bit transmission . 20
5.3 Error protection . 21
5.4 Synchronisation of blocks and groups . 21
6 Message format (session and presentation layers) . 22
6.1 Addressing . 22
6.1.1 Design principles . 22
6.1.2 Principal features . 22
6.1.3 Group types . 23
6.1.4 Open data channel/Applications Identification . 25
6.1.5 Coding of the group types . 27
6.2 Coding of information . 44
6.2.1 General . 44
6.2.2 Coding of information for control . 44
6.2.3 Coding and use of information for display . 54
6.2.4 Coding of clock time and date (CT) . 54
6.2.5 Coding of information for Transparent Data Channels (TDC) . 55
6.2.6 Coding of information for in house applications (IH) . 55
6.2.7 Coding of Radio Paging (RP) . 55
6.2.8 Coding of Emergency Warning Systems (EWS) . 56
7 Description of features . 57
7.1 Alternative frequencies list (AF) . 57
7.2 Clock Time and date (CT) . 57
7.3 Decoder Identification (DI) and dynamic PTY Indicator (PTYI) . 57
7.4 Extended Country Code (ECC) . 57
7.5 Enhanced Other Networks information (EON) . 57
7.6 Emergency Warning System (EWS) . 57
7.7 In House application (IH) . 57
7.8 Music Speech switch (MS) . 58
7.9 Open Data Applications (ODA) . 58
7.10 Programme Identification (PI) . 58

IEC 62106:2015 © IEC 2015 – 3 –
7.11 Programme Item Number (PIN) . 59
7.12 Programme Service name (PS) . 59
7.13 Programme Type (PTY) . 59
7.14 Programme Type Name (PTYN) . 59
7.15 Radio Paging (RP) . 59
7.16 RadioText (RT) . 59
7.17 Enhanced RadioText (eRT) . 59
7.18 RadioText Plus (RT+) . 60
7.19 Traffic Announcement identification (TA) . 60
7.20 Transparent Data Channels (TDC) . 60
7.21 Traffic Message Channel (TMC) . 60
7.22 Traffic Programme identification (TP) . 60
8 Marking . 60
Annex A (normative) Offset words to be used for group and block synchronisation . 62
Annex B (informative) Theory and implementation of the modified shortened cyclic
code . 63
B.1 General . 63
B.2 Encoding procedure . 63
B.2.1 Theory . 63
B.2.2 Shift-register implementation of the encoder . 65
B.3 Decoding procedure . 65
B.3.1 Theory . 65
B.3.2 Implementation of the decoder . 67
Annex C (informative) Implementation of group and block synchronisation using the
modified shortened cyclic code . 69
C.1 Theory . 69
C.1.1 Acquisition of group and block synchronisation . 69
C.1.2 Detection of loss of synchronisation . 69
C.2 Shift register arrangement for deriving group and block synchronisation
information . 69
Annex D (normative) Programme identification codes and extended country codes . 72
D.1 General . 72
D.2 PI structure . 72
D.3 Extended country codes . 72
D.4 Country codes: ‘Nibble 1’ . 73
D.5 Programme in terms of area coverage (codes for fixed location transmitters
only): ‘Nibble 2’ . 76
D.6 Programme reference number: ‘Nibbles 3 and 4’ . 76
D.7 PI codes for low-power short range transmitting devices . 77
Annex E (normative) Basic and extended RDS character sets . 78
Annex F (normative) Programme type codes . 98
Annex G (informative) Conversion between time and date conventions . 101
Annex H (informative) ARI (Autofahrer-Rundfunk-Information) system –
Discontinuation . 103
Annex J (normative) Language identification . 104
Annex K (informative) RDS logo . 106
Annex L (informative) Open data registration . 107
Annex M (normative) Coding of Radio Paging (RP) . 110

– 4 – IEC 62106:2015 © IEC 2015
M.1 General . 110
M.2 Basic paging protocol . 110
M.2.1 Coding characteristics for paging . 110
M.2.2 Transmitter network group designation . 111
M.2.3 Locking to a channel . 113
M.2.4 Loss of synchronization . 113
M.2.5 Group type 7A message format . 113
M.3 Enhanced paging . 119
M.3.1 General . 119
M.3.2 Multi-operator/area paging . 119
M.3.3 Extension of paging addressing mode . 126
M.3.4 Battery saving mode . 126
M.3.5 Group type 7A message format . 129
M.3.6 Address notification bit versus pager individual address . 138
M.4 Examples of the traffic handling capacity of the specified radio paging
system . 139
Annex N (normative) Country codes and extended country codes for countries outside
the European Broadcasting Area . 142
N.1 African Broadcasting Area . 142
N.2 Allocations of symbols for countries in ITU Region 2 . 144
N.3 Allocations of symbols for countries in ITU Region 3 . 146
Annex P (normative) Coding of RadioText Plus information (RT+) . 148
P.1 General . 148
P.2 Definitions . 148
P.3 RT+ tag . 149
P.4 RT+ information elements and data model . 150
P.4.1 General . 150
P.4.2 List of RT/eRT content types . 150
P.4.3 Structures of RT+ messages . 151
P.4.4 Receiver data model . 152
P.5 Coding RT+ in ODA groups . 153
P.5.1 General . 153
P.5.2 RT+ identification (Group type 3A) . 154
P.5.3 Coding of the RT+ tag . 155
P.5.4 Clearing of RT+ messages . 156
P.6 Broadcasting conventions . 159
P.7 Receiving conventions . 159
P.8 Marking . 160
Annex Q (normative) Coding of enhanced RadioText (eRT) . 161
Q.1 General . 161
Q.2 Coding eRT in ODA groups . 161
Q.2.1 General . 161
Q.2.2 eRT identification (Group type 3A) . 161
Q.2.3 Coding of the eRT text string . 162
Q.3 Broadcasting conventions . 164
Q.4 Receiving conventions . 165
Q.5 Marking . 165
Annex R (informative) RBDS in the USA . 166
Annex S (normative) List of RDS specific abbreviations . 167

IEC 62106:2015 © IEC 2015 – 5 –
Bibliography . 168

Figure 1 – Block diagram of radio-data equipment at the transmitter . 14
Figure 2 – Block diagram of a typical radio-data receiver/decoder . 15
Figure 3 – Amplitude response of the specified transmitter or receiver data-shaping
filter 17
Figure 4 – Amplitude response of the combined transmitter and receiver data-shaping
filters . 18
Figure 5 – Spectrum of biphase coded radio-data signals . 18
Figure 6 – Time-function of a single biphase symbol . 19
Figure 7 – 57 kHz radio-data signals . 19
Figure 8 – Structure of the baseband coding . 20
Figure 9 – Message format and addressing . 20
Figure 10 – ODA version A groups . 26
Figure 11 – ODA version B groups . 27
Figure 12 – Basic tuning and switching information – Type 0A group . 27
Figure 13 – Basic tuning and switching information – Type 0B group . 27
Figure 14 – Programme item number and slow labelling codes – Type 1A group . 29
Figure 15 – Programme Item Number – Type 1B group . 30
Figure 16 – RadioText – Type 2A group . 30
Figure 17 – RadioText – Type 2B group . 31
Figure 18 – Application identification for open data – Type 3A group . 32
Figure 19 – Open data – Type 3B group . 33
Figure 20 – Clock-time and date transmission – Type 4A group . 34
Figure 21 – Open data – Type 4B group . 34
Figure 22 – Transparent data channels – Type 5A group . 35
Figure 23 – Transparent data channels – Type 5B group . 35
Figure 24 – In-house applications – Type 6A and 6B group . 36
Figure 25 – Radio paging – Type 7A group . 36
Figure 26 – Type 7B group . 37
Figure 27 – Traffic message channel – Type 8A group . 37
Figure 28 – Open data – Type 8B group . 37
Figure 29 – Allocation of EWS message bits – Type 9A group . 38
Figure 30 – Open data – Type 9B group . 38
Figure 31 – Programme type name PTYN – Type 10A group . 39
Figure 32 – Open data – Type 10B group . 39
Figure 33 – Open data – Type 11A and 11B groups . 40
Figure 34 – Open data – Type 12A and 12B groups . 40
Figure 35 – Enhanced paging information – Type 13A group . 41
Figure 36 – Open data – Type 13B group . 42
Figure 37 – Enhanced other networks information – Type 14A groups . 42
Figure 38 – Enhanced Other Networks information – Type 14B groups. 43
Figure 39 – Open data – Type 15A group . 43
Figure 40 – Fast basic tuning and switching information – Type 15B group . 44

– 6 – IEC 62106:2015 © IEC 2015
Figure 41 – Structure of Block 3 of Type 1A groups . 52
Figure 42 – Structure of variant 12 of block 3 of type 14A groups (linkage information)
– National link . 53
Figure 43 – Structure of variant 12 of block 3 of type 14A groups (linkage information)
– International link . 53
Figure 44 – Structure of Variant 7 of Block 3 of type 1A groups for Identification of a
programme carrying EWS information . 56
Figure B.1 – Generator matrix of the basic shortened cyclic code in binary notation . 64
Figure B.2 – Shift-register implementation of the encoder . 65
Figure B.3 – Parity-check matrix of the basic shortened cyclic code . 66
Figure B.4 – Shift-register implementation of the decoder . 67
Figure C.1 – Group and block synchronisation detection circuit . 70
Figure D.1 – PI structure . 72
Figure D.2 – Structure of Variant 0 of Block 3 of type 1A groups (ECC) . 73
Figure D.3 – European Broadcasting Area – Correspondence between geographical
locations and the symbols used . 74
Figure G.1 – Conversion routes between Modified Julian Date (MJD) and Coordinated
Universal Time (UTC) . 101
Figure J.1 – Language identification code allocation . 104
Figure M.1 – Group type 7A message format for radio paging . 113
Figure M.2 – Group type 7A paging without an additional message . 114
Figure M.3 – Group type 7A paging with an additional 10 digit message . 115
Figure M.4 – Group type 7A paging with an additional 18 digit message . 115
Figure M.5 – Group type 7A paging with an additional alphanumeric message . 116
Figure M.6 – Group type 7A paging with an additional international 15 digit message . 117
Figure M.7 – Functions message in international paging . 118
Figure M.8 – Variant 0 of 1A group with PIN . 120
Figure M.9 – Variant 2 of 1A group with PIN . 121
Figure M.10 – Variants of 1A group without PIN . 122
Figure M.11 – Group type 13A . 128
Figure M.12 – Group type 7A paging with tone-only message . 130
Figure M.13 – First 7A group of a variable-length message . 131
Figure M.14 – Group type 7A national paging with additional alphanumeric message . 132
Figure M.15 – Group type 7A national paging with additional variable-length numeric
message . 134
Figure M.16 – Group type 7A national paging with additional variable-length functions
message . 135
Figure M.17 – The two first 7A groups of an international alphanumeric message . 136
Figure M.18 – The two first 7A groups of an international variable-length numeric
message . 137
Figure M.19 – The two first 7A groups of an international variable-length functions
message . 137
Figure M.20 – Traffic handling capacity, busy hour, call rate = 0,10 calls/pager/hour . 140
Figure M.21 – Traffic handling capacity, busy hour, call rate = 0,067 calls/pager/hour . 141
Figure M.22 – Traffic handling capacity, busy hour, call rate = 0,05 calls/pager/hour . 141

IEC 62106:2015 © IEC 2015 – 7 –
Figure P.1 – RT+ information of the category ‘Item’ (see Table P.2) will be attached to
the programme elements Item 1 and Item 2 . 153
Figure P.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 . 153
Figure P.3 – RT+ information of the category ‘Item’ will be attached only to the
programme element Item 1, but not to the programme element Talk . 153
Figure P.4 – Bit allocation for group 3A (message bits and AID) . 154
Figure P.5 – Coding of the message bits of the application group . 155
Figure Q.1 – Bit allocation for group 3A (message bits and AID) . 162
Figure Q.2 – Coding of the message bits of the application group . 163

Table 1 – Encoding rules . 16
Table 2 – Decoding rules . 16
Table 3 – Group types . 23
Table 4 – Main feature repetition rates . 24
Table 5 – Group repetition rates . 25
Table 6 – ODA group availability signalled in type 3A groups . 26
Table 7 – STY codes . 41
Table 8 – Codes for TP and TA . 45
Table 9 – Bit d to d meanings . 45
0 3
Table 10 – VHF code table . 46
Table 11 – Special meanings code table . 46
Table 12 – Code tables according to ITU regions; LF/MF code table – For ITU regions
1 and 3 (9 kHz spacing) . 46
Table 13 – Code tables according to ITU regions; MF code table – For ITU region 2
(10 kHz spacing) . 47
Table A.1 – Offset word codes . 62
Table B.1 – Offset word syndromes using matrix of Figure B.3 . 67
Table C.1 – Offset word syndromes for group and block synchronisation . 71
Table D.1 – PI code structure . 72
Table D.2 – European Broadcasting Area – Symbols used for ECC and PI country
codes . 75
Table D.3 – Area coverage codes . 76
Table D.4 – Programme reference number codes . 76
Table D.5 – PI codes for short range transmitting devices . 77
Table E.1 – Basic RDS character set . 78
Table E.2 – Non-transmitted UCS-2 equivalents (1 of 7) . 79
Table E.3 – Extended RDS character set, for eRT only (1 of 13) . 85
Table F.1 – Programme type codes and corresponding terms for display . 98
Table G.1 – Symbols used . 101
Table J.1 – Language identification codes . 104
Table M.1 – Pager group codes . 111
Table M.2 – Codes for additional message content . 114
Table M.3 – Paging segment address codes for 10 and 18 digit messages . 115
Table M.4 – Paging segment address codes for alphanumeric messages . 116

– 8 – IEC 62106:2015 © IEC 2015
Table M.5 – Paging segment address codes for international 15 digit messages . 117
Table M.6 – Paging segment address codes for functions message . 118
Table M.7 – Sub-usage codes . 122
Table M.8 – Group designation codes . 126
Table M.9 – Cycle selection codes . 127
Table M.10 – Message sorting codes . 128
Table M.11 – Codes for message types . 130
Table M.12 – Description of the control byte . 131
Table M.13 – Use of paging call repetition flag . 132
Table M.14 – Paging segment address codes for alphanumeric message . 133
Table M.15 – Paging segment address codes for variable length numeric message . 134
Table M.16 – Paging segment address codes for national paging with variable-length
functions message . 135
Table M.17 – Address notification (50 bit) . 138
Table M.18 – Address notification (25 bit) . 139
Table M.19 – Z3 parity relationship . 139
Table P.1 – RT+ information elements . 148
Table P.2 – Code list and ‘RT+ class’ description of ‘RT/eRT content types (1 of 3) . 157
Table Q.1 – eRT information elements . 161

IEC 62106:2015 © IEC 2015 – 9 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATION OF THE RADIO DATA SYSTEM (RDS)
FOR VHF/FM SOUND BROADCASTING IN THE FREQUENCY
RANGE FROM 87,5 MHz TO 108,0 MHz

FOREWORD
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International Standard IEC 62106 ha
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