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Voice/Control Channel Decoding Software - For discussion of software applications which decode digital voice formats and trunking control channels. Please use the HF Digital Signals forum for anything below 30MHz.

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Old 09-29-2013, 10:18 PM
Join Date: Feb 2009
Posts: 818
Default P25: List all Channels for a Site

I have noticed that when using Pro96Com (I don't use any other decoding software ATM so I'm not sure about the rest), it lists a bunch of channels almost immediately (even with 0 hits). How do you know what channels the system uses. I don't see any kind of control channel message that states this (unless I missed it somewhere).
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Old 09-29-2013, 10:32 PM
Join Date: Oct 2007
Posts: 5,230

For Pro96Com:

c = Active/Primary Control Channel
a = Alternate Control Channel
v = Voice Channel
i = CWID Channel
d = Data Channel

c and a will populate almost immediately. The rest will populate as voice or data calls are made on the system. If the system sends out a CWID (call sign), that will populate as i. Some frequencies may have a combination of multiple usages.
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Old 09-29-2013, 11:57 PM
Join Date: Feb 2009
Posts: 818

Woops, that's my fault. Pro96Com evidently stores channels in a file and I've always assumed it was instantly populating the channels.
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