February 2017 - op25-dev - lists.osmocom.org

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?

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Stay tuned?
by Apu apu＠spfld.com [op25-dev] 01 Mar '17

01 Mar '17

Any advice or hints on getting scope.py tuned and then to stay tuned? (I'm trying to listen to New Jersey Interoperability Communications System -- P25 Phase II -- in case it matters.) When I first played with op25 a few months ago, I stuck it on a spare computer with a NooElec SDR dongle. Took a little futzing but I had it up and running in a day or so and it actually stayed working perfectly for close to 6 weeks. But this was just a test so that computer wasn't on a UPS and shut down during a power failure. Same hardware and I haven't been able to get it to stay tuned for more than a few hours since. Figured maybe it was just the SDR dongle drifting so I bought a RTL-SDR dongle which is supposed to drift less but I'm still having problems getting the system to tune for more than 30 minutes or so. Your thoughts are appreciated. Thanks, -- Apu <apu(a)spfld.com>

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Unable to Run scope.py
by Brett Friermood brett.friermood＠gmail.com [op25-dev] 05 Feb '17

05 Feb '17

BretJust built OP25 on Debian Jessie without issue. However when I try to run a simple scope command it fails with the following error: Traceback (most recent call last): File "./scope.py", line 2751, in <module> app = stdgui2.stdapp(p25_rx_block, "APCO P25 Receiver", 3) File "/usr/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py", line 46, in __init__ wx.App.__init__ (self, redirect=False) File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/_core.py", line 8628, in __init__ self._BootstrapApp() File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/_core.py", line 8196, in _BootstrapApp return _core_.PyApp__BootstrapApp(*args, **kwargs) File "/usr/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py", line 49, in OnInit frame = stdframe (self.top_block_maker, self.title, self._nstatus) File "/usr/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py", line 76, in __init__ self.panel = stdpanel (self, self, top_block_maker) File "/usr/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py", line 98, in __init__ self.top_block = top_block_maker (frame, self, vbox, sys.argv) File "./scope.py", line 212, in __init__ self.__init_gui(frame, panel, vbox) File "./scope.py", line 466, in __init_gui self.frame.CreateStatusBar() File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/_windows.py", line 615, in CreateStatusBar return _windows_.Frame_CreateStatusBar(*args, **kwargs) wx._core.PyAssertionError: C++ assertion "!m_frameStatusBar" failed at ../src/common/framecmn.cpp(381) in CreateStatusBar(): recreating status bar in wxFrame The command I am running is simply "./scope.py -f 152.5925e6". Other references to this error that I have been able to find appeared to all be resolved by adding or properly formatting the NAC in the trunk.tsv file. Scope.py properly finds the SDR dongle, and will set the gain if I provide the argument, but always fails with this error and never opens the GUI. I'm sure I'm missing something simple. Thanks, Brett

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