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Programmming software
© 2016 ITEL Elettronica e Telecominicazioni Snc
3.3.4.2
A Method
This is the simplest method and it is indicated for all those stations which have a maximum of 25
alternative frequencies and do not provide regional - differentiated programming.
To implement this method, simply insert in AF List 1 all frequencies of the station in ascending
order.
No other list must be filled.
Example:
88.1
91.3
104.1
104.5
3.3.4.3
B Method
This method is used where the number of alternative frequencies used in a network exceeds 25, or
where it is required to indicate frequencies which belong to different areas which at times carry
different programs.
Each transmitter and associated repeater stations broadcast the same set of different AF lists in
sequence.
The number of AF lists within a network is in general identical to the number of transmitters and
repeater stations in the network so as to provide a unique list for each transmitting station. In this
protocol the alternative frequencies for the VHF/FM transmitters are individually addressed by
transmitting the tuning frequency paired with one alternative frequency within one block.
Each list starts with the tuning frequency for which the list is valid.
All remaining pairs (up to 12) give the tuning frequency together with a valid AF.
Usually, the tuning/AF pair has to be entered in ascending order if the AF is not a regional variant of
the tuning frequency, on the contrary the order has to be reversed.
If the number of AFs of a station is larger than 12, the list must be split into two or more lists. These
lists are transmitted directly one after the other, and the receiver must combine the lists again.
If a transmitter frequency is used more than once within a network the respective AF lists are
transmitted separately. In order to indicate that these lists with the same tuning frequency belong to
different stations, the lists must be separated by AF lists of other stations.
To simplify the programming of a B list, put into the first line AF1 the main tuning frequency, then
enter on the other lines (AF2 to AF13) a maximum of 12 alternative frequencies, then press the
button "Build B list."
If you, in future, wish to add some new frequencies to the list, simply enter them at the bottom and
press the button "Build B list again."
Summary of Contents for DPRO3
Page 4: ...Section 1 Description ...
Page 9: ...Section 2 Front panel display ...
Page 25: ...Section 3 Programmming software ...
Page 43: ...Section 4 RD Link ...
