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PTY (Program Type) – The PTY data flag identifies the station format from a pre-defined
categories. Many RDS receivers are able to seek the listener's preferred format automatically.
This means that a car radio can switch from a fading station to a stronger one that carries the same
variety of music, though not the very same program, as provided by AF switching. The PTY
function of RDS helps a broadcaster catch 'transient audience' share. The PTY code is not meant
to change from song to song or to accommodate a top-of-the-hour newscast, however.
MS (Music/Speech Switch) – This flag simply indicates whether music or speech is the primary
broadcast programming.
TP (Traffic Program Identification) – The TP flag identifies the station as one that routinely
broadcasts traffic bulletins for motorists as part of its normal, everyday programming. When the
TP flag is displayed on the receiver faceplate, the radio is searching for traffic announcements. The
radio keeps track of TP stations offering this service to speed up the search-and-switch process.
TA (Traffic Announcement) – This is a temporary flag added to the RDS data stream only
when a traffic bulletin is being aired. Some RDS car radios can be set to search for traffic bulletins
among various TP stations while tuned to a listener's preferred program, or even while playing
a tape or CD. As soon as any TP station broadcasts a traffic bulletin, the receiver temporarily
switches-over to receive it. When the bulletin is finished, the receiver switches back to the original
program, tape or CD.
DI (Decoder Information) – This is one of several 'flags' that convey yes/no or other very
basic data. This particular flag tells the receiver whether the broadcast is monaural, or is being
transmitted in any of several methods of stereo or binaural broadcasting.
List of Alternative Frequencies – A network broadcaster, or one with low-power rebroadcast
transmitters (translators) to fill holes in his coverage area, can include a list of all frequencies where
the identical program can be heard simultaneously. The RDS receiver (particularly the upscale car
radio) constantly searches for the best signal that carries the very same program. When a better
signal is found, the radio re-tunes with no noticeable interruption. The principal utility of this RDS
function is with European radio networks and US stations with 'translators'.
IMPORTANT NOTE:
Encoder module is installed. If not, the following message will appear:
The Stereo & RDS encoder board is an option that could be added. If you would like to purchase
one, please contact us at sales@devabroadcast.com.
E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com
The Basic RDS tab will be available/active only if Stereo & RDS
- 46 -
65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: +359 56 820027, Fax: +359 56 836700
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