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IEC 62106-9
Edition 1.0 2021-05
INTERNATIONAL
STANDARD
Radio data system (RDS) –VHF/FM sound broadcasting in the frequency range
from 64,0 MHz to 108,0 MHz –
Part 9: RBDS – RDS variant used in North America
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IEC 62106-9
Edition 1.0 2021-05
INTERNATIONAL
STANDARD
Radio data system (RDS) –VHF/FM sound broadcasting in the frequency range
from 64,0 MHz to 108,0 MHz –
Part 9: RBDS – RDS variant used in North America
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.060.01; 33.160.20; 33.170 ISBN 978-2-8322-9785-8
– 2 – IEC 62106-9:2021 © IEC 2021
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and abbreviated terms . 6
3.1 Terms and definitions . 6
3.2 Abbreviated terms . 7
4 Coding of information . 7
4.1 General . 7
4.2 Exceptions . 7
4.2.1 PI coding . 7
4.2.2 PTY coding . 7
4.2.3 PS . 7
Annex A (normative) PI coding for North America . 8
A.1 General . 8
A.2 Call letter conversion . 8
A.2.1 Conversion method to be used . 8
A.2.2 Examples of assigning PI codes from call letters . 12
A.3 Application: receiver functionality to PI code assignments . 13
A.4 Optional – modifying PI code for use with traffic information systems . 14
A.5 PI codes for FM translators . 14
Annex B (normative) PTY coding . 16
Bibliography . 19
Table A.1 – Letter to decimal value conversion . 8
Table A.2 – PI code possibilities . 10
Table A.3 – Nationally/regionally-linked radio stations code . 11
Table A.4 – 3-letter only call signs . 12
Table A.5 – Receiver checking method for PI 0x1 nibble 1 substitution . 14
Table B.1 – Programme type codes and corresponding terms for display . 16
Table B.2 – Definition of the terms used to denote programme type – PTY . 17
Table B.3 – PTY code descriptions and abbreviations in Spanish . 18
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RADIO DATA SYSTEM (RDS) –
VHF/FM SOUND BROADCASTING IN THE FREQUENCY
RANGE FROM 64,0 MHz TO 108,0 MHz –
Part 9: RBDS –
RDS variant used in North America
FOREWORD
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International Standard IEC 62106-9 has been prepared by technical area 1: Terminals for audio,
video and data services and contents, of IEC technical committee 100: Audio, video and
multimedia systems and equipment.
This first edition, together with IEC 62106-1, IEC 62106-2, IEC 62106-3, IEC 62106-4,
IEC 62106-5, IEC 62106-6 and IEC 62106-10, cancels and replaces IEC 62106:2015, and
constitutes a technical revision.
IEC 62106-9 cancels and replaces US NRSC-4-B, National Radio Systems Committee – United
States RBDS standard, published in 2011.
– 4 – IEC 62106-9:2021 © IEC 2021
The text of this International Standard is based on the following documents:
Draft Report on voting
100/3399/CDV 100/3553/RVC
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
A list of all parts in the IEC 62106 series, published under the general title Radio data system
(RDS) – VHF/FM sound broadcasting in the frequency range from 64,0 MHz to 108,0 MHz, can
be found on the IEC website.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at /members_experts/refdocs. The main document types developed by IEC are
described in greater detail at /standardsdev/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
INTRODUCTION
Since the mid-1980s, a fascinating development has taken place. Most of the multimedia
applications and standards have been created or redefined significantly. Hardware has become
extremely powerful with dedicated software and middleware. In the mid-1980s, Internet as well
as its protocols did not exist. Navigation systems became affordable in the late 1990s, and a
full range of attractive smartphones now exist. The computing power of all these new products
is comparable with that of the mainframe installations in that era.
Listener expectations have grown faster than the technology. Visual experience is now very
important, like the Internet look and feel. Scrolling text or delivering just audio is nowadays
perceived as insufficient for FM radio, specifically for smartphone users. New types of radio
receivers with added value features are therefore required. RDS has so far proven to be very
successful.
FM radio with RDS is an analogue-digital hybrid system, which is still a valid data transmission
technology and only the applications need adaptation. Now the time has come to solve the only
disadvantage, the lack of sufficient data capacity. With RDS2, the need to increase the data
capacity can be fulfilled.
RDS was introduced in the early 1980s. During the introductory phase in Europe, the car
industry became very involved and that was the start of an extremely successful roll-out. Shortly
afterwards, RDS (RBDS) was launched in the USA. [1, 2, 3, 4, 5, 6, 7]
The RDS Forum has investigated a solution to the issue of limited data capacity. For RDS2,
both sidebands around the RDS 57 kHz subcarrier can be repeated a few times, up to three,
centred on additional subcarriers higher up in the FM multiplex whike still remaining compatible
with the ITU Recommendations.
The core elements of RDS2 are the additional subcarriers, which will enable a significant
increase of RDS data capacity to be achieved and then only new additional data applications
will have to be created, using the RDS-ODA feature, which has been part of the RDS standard
IEC 62106 for many years.
In order to update IEC 62106:2015 to the specifications of RDS2, the original document has
been restructured as follows:
Part 1: RDS system: Modul
...