op25-dev March 2015

op25-dev@lists.osmocom.org

1 participants
3 discussions

RC4
by gregella53＠gmail.com [op25-dev] 23 Jul '17

23 Jul '17

I know that a while back there was a grc flowraph of op25 that handled DES. Any chance of a pybombs recipe for op25 that handles RC4 as implemented in Advanced Digital Privacy?

14 84

recommended build versions
by singleshare＠yahoo.com [op25-dev] 28 Mar '15

28 Mar '15

Hi group, I want to build a new OP25/GnuRadio system. For those of you that may have a done a recent build, are there recommended versions of Linux and Gnuradio etc.. to use? My past experience was that different versions can cause major install headaches due to incompatibilities. I found it easier to try to get things working in a VM first so I could restore a snapshot after things got screwed up and would really like to minimize time spent to get a fresh build working correctly. Thanks for an tips!

2 2

Weird repeating audio glitch
by lukekb＠gmail.com [op25-dev] 23 Mar '15

23 Mar '15

Hi - I am using the op25_repeater blocks from the Max branch. I get a weird repeating audio glitch included with the decoded audio. I am clearly doing something wrong. Any idea where it could be? An example is here and I am attaching the file: http://openmhz.com/call/550f7f9ff44efef54e223b72 http://openmhz.com/call/550f7f9ff44efef54e223b72 The C++ code I am using is based on the scope.py code and p25_demodulator.py and is here: https://github.com/robotastic/trunk-recorder/blob/master/p25_recorder.cc https://github.com/robotastic/trunk-recorder/blob/master/p25_recorder.cc Any pointers would be huge! I am also trying to improve the CPU performance.... any thoughts there would be great. - Luke

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op25-dev March 2015