The initial part of the signal SDPSK (Symmerical Differential PSK) modulation at 2000
Baud speed and carrier frequency ~1600 Hz; as you see, transitions do not traverse the origin and the information is stored in the transitions and not in the (four) states.
The initial part is followed by short MFSK-8 125 Baud segment that is not compatible with MS 188-141 2G-ALE although the scope be the same.
The initial SDPSK part exhibits a 50ms ACF that corresponds to a 100-bit frame.
This proprietary waveform is used in their TRC-3500/TRC-3600 and TRC-3700 series radios.
The initial part is followed by short MFSK-8 125 Baud segment that is not compatible with MS 188-141 2G-ALE although the scope be the same.
The initial SDPSK part exhibits a 50ms ACF that corresponds to a 100-bit frame.
This proprietary waveform is used in their TRC-3500/TRC-3600 and TRC-3700 series radios.
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