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The P25 decoder (APCO P25 Phase 2 Decoder) uses both an internal
software IMBE vocoder and an external hardware AMBE+2 vocoder for voice
decoding. The WiNRADiO P25 decoder plugin is used to receive digital
transmissions with a codec used to produce decoded audio from the
transmission (this device provides the necessary codecs). The WiNRADiO
P25 decoder makes it possible to demodulate, decode, analyze and monitor
phase 1 and phase 2 types of APCO P25 digital signals (excluding
encrypted types) using the WiNRADiO WR-G39DDC, WR-G69DDC and WR-G315 series of
receivers.
The adjacent screenshot shows the WR-G39DDC and WR-G69DDC receiver application, where a separate window is spawned. With the WR-G315 receiver, the decoder panel is embedded within the main application window.
The decoder supports the voice traffic on both inbound and
outbound channels, displays digital transmission parameters and supports
a secondary transmission channel if 2 TDMA channels on a single
frequency are being transmitted.
Note: An APCO trunking option is under development
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Supports a single decoding channel
