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E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com
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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.
RT
(Radio Text) – This is a 64-character block of plain text that the listener can select for
visual display on the faceplate of the radio by pressing an INFO button on the receiver. This
function is not available on many automobile radios for safety reasons, which has precipitated the
frowned-upon practice of scrolling the PS field instead. The Radio Text can announce song titles
and performers, run special promotions or contests, or broadcast sponsors’ messages.
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.
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.
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.’
PIN
- Program Item Number: The code enables the designed to use this feature receivers
and recorders to respond to the preselected by the user program item(s).This feature is used via
scheduled program time, to which in order to avoid ambiguity is added the day of the month.
Date
and
Time
– Decoded CT information.
