op25-dev

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314 discussions

Post-processing P25 data
by ahenney 30 Mar '12

30 Mar '12

If I record a few seconds of data from an encrypted P25 trunked system, can somebody tell me what type of encryption it is and perhaps the key/logical ID assigned? Thanks, Alan N3LGE

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Another New Member
by ryanharm 26 Mar '12

26 Mar '12

Hi All Im a newbie attempting to install op25 under Cygwin. Will let you all know how that goes. I am slowing working through all the error messages and installing all the missing packages. I work for a large radio equipment manufacturer with an emerging interesting in P25. I can't wait to get op25 installed and see how well it works :) Regards Ryan

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difference between op25.decoder_bf and op25.decoder_ff
by bdapriv01 23 Mar '12

23 Mar '12

Hi Whats the difference between these 2? I'm new to Gnuradio & python to be honest; I'm writing my own ap25 listener for the funcube... So far, I've got my software tuning, FM decoding, and then sending data into the FSK4 decoder; I can see it fine tuning.. but I don't get anything out of the decoder_bf function. Is there any easy way, to debug what its doing?? Digging around in code there doesn't seem to be much debugging. I did create some network sinks, and forward the output of the FM demod to a a scope inside gnuradio companion.. the signal looks like FSK4 with the funky phase changes. Sean

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New member
by op25-dev-owner＠yahoogroups.com 12 Mar '12

12 Mar '12

Hi All, I would like to welcome Harald Welte to the mailing list. Harald is very graciously providing the web hosting for OP25, so here is a big thankyou and welcome :) Cheers, Matt

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