For broadcast stations with constant programming type (see Program Type above) the
Decoder Identification section has the Dynamic PTY field cleared. However if the
broadcast program content changes during the day, and the Program Type (PTY) field
is changed accordingly then the Dynamic PTY check box should be checked.
The RDS2 will be programmed with this information next time the SEND button is
pressed.
3.3.6 Alternative Frequencies - Broadcast Group Frequency Identification
(AF)
What is AF?
If a broadcaster is part of a regional group of stations, RDS Alternative Frequency data
can be used to provide information about the frequencies used by other stations
broadcasting the same program.
If the signal level drops below a certain threshold on a particular frequency, the RDS
enabled receiver can scan through the AF list and automatically tune in to the strongest
alternative signal broadcasting the same program
Important:
All RDS encoders on these transmitters must have the same Program
Identifier (PI) for this to work.
Although the RDS specification allows for up to 25 alternative transmitter frequencies,
each transmitter should only have a frequency list that is based on the other
transmitters that can be received in its locality. This is to prevent wasted time scanning
for stations that cannot be received clearly.
Setting up your AF list
First ensure your PI is set correctly and is the same for the stations you will include in
your AF list.
On the Basic configuration screen, simply fill in the text fields from left to right with
the closest geographically located station on the left to the furthest station on the right.
The RDS2 will be programmed with this information next time the SEND button is
pressed.
3.4 ‘PSN’ Configuration Screen
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Summary of Contents for rds2
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