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The RCA connector marked "Data" at rear of 1500/3000 Series "e" (external model) WiNRADiO receivers provides output for the narrow FM
(FMN mode) discriminator. This can be used for decoding of various digital signals with better accuracy than when using the
audio output (the audio output has additional filtering which is optimized for listening, but not for digitally
coded signals).
Some software decoders (both WiNRADiO and third party) can take advantage of this facility. For example,
the WiNRADiO Trunking Option can take advantage of this data
output for improved decoding of the trunking network control channel.
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