op25-dev

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312 discussions

Project question
by Alex alex323＠gmail.com [op25-dev] 22 Sep '16

22 Sep '16

Hi. On the front page of the wiki (http://op25.osmocom.org/trac/wiki) I see the following bullet point: "Locate and track the locations of P25 mobile stations." What exactly is meant by this? How could such a thing be accomplished? -- Alex

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new recipe for building OP25
by ikj1234i＠yahoo.com [op25-dev] 07 Sep '16

07 Sep '16

Historically the use of pybombs to install OP25 has been very helpful since it takes care of building all the needed prerequisite software. This is no longer necessary as of Ubuntu 14.04, which installs the 3.7 version of gnuradio. As a result we have a new install method that takes 95% less time than the old pybombs method, is less error-prone, and requires no more RAM than a base install of Linux. You can run this install in a machine with 1GB of RAM, although 2GB is recommended (this recommendation comes from ubuntu, and is caused by the memory-hog GUI - OP25 by itself currently does not require 2GB to compile, now that a source build of gnuradio is no longer required)... This recipe has been tested on ubuntu 14.04 only, it is likely NOT to work in either 12.04 or 16.04... First, use these commands to install the pre-reqs sudo apt-get update sudo apt-get build-dep gnuradio sudo apt-get install gnuradio gnuradio-dev gr-osmosdr librtlsdr-dev libuhd-dev libhackrf-dev libitpp-dev libpcap-dev git Second, use these commands to build and install OP25: [Note, the mkdir build; cd build; cmake ../; make; sudo make install sequence is a bog-standard form when source-building apps that utilize cmake.] cd ~ git clone git://op25.osmocom.org/op25.git cd op25 mkdir build cd build cmake ../ make sudo make install sudo ldconfig Finally you may need to use the command sudo rmmod dvb_usb_rtl28xxu to remove the DVB kernel module that conflicts with the RTL USB SDR. You may also need to edit the system udev rules for the RTL -both are common issues and you can search for the needed resources if the RTL isn't getting recognized... Once this is all done (no longer a need to source any env commands into the shell) you should be ready to invoke scope.py, which is the principal OP25 GUI app... As a pre-check, you can also run the osmocom_fft application (which should install as part of the pre-reqs) to test basic RTL connectivity and rule out related problems before invoking scope.py... I would appreciate feedback and especially any trouble reports when using these procedures. If all is OK we'll add this to the wiki... 73 Max

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wxFrame error
by kf5jnu＠yahoo.com [op25-dev] 04 Sep '16

04 Sep '16

I have built gr-op25 on a couple computers now and am running into an issue on this most recent install. I installed gr-op25 via pybombs. When I attempt to run scope.py I get an error that has to do with some wx libraries. The last line contains an error about wxFrame and Reattaching to kernel. All the other recipes I install work and I have set my python path, but for some reason it still doesn't seem to be working. The computer is a remote system and off line right now but as soon as it comes back up I can post the error. Any ideas or experience with this?

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r82xx_set_freq: failed=-1 [3 Attachments]
by justeu.badd＠gmail.com [op25-dev] 28 Aug '16

28 Aug '16

Greeting all, I am able to establish a op25 Receiver but, it does not tune to the correct frequency, I believe that this is because "[R82XX] No valid PLL values for 2293470628 Hz! r82xx_set_freq: failed=-1" My command line is: ./scope.py --args 'rtl=0,buflen=65536' -g 65 -f 851.18750e6 -N 'LNA:49' -V -v 0 -S 288000 -q 39 -T trunk.tsv I am attaching my trunk.tsv file and the error from Terminal. I also have a concern about the NAC of the group that I want to follow, on RR, the "System ID" is 348, 5A1, and 649. The WACN is BEE00. I am interested in the Cincinnati / Hamilton County system. On the UniTrunker setup, the NAC is showing as 342. Any help would be appreciated. Mel

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key error NAC
by Sean Kealy superstardodge＠yahoo.com [op25-dev] 04 Jul '16

04 Jul '16

anybody get a key error NAC when trying to run thier trunking(trunk.tsv) in scope?I know Im entering a good NAC code, what givesstring is below frame = stdframe (self.top_block_maker, self.title, self._nstatus) File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py", line 76, in __init__ self.panel = stdpanel (self, self, top_block_maker) File "/usr/local/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 213, in __init__ self.open_usrp() File "./scope.py", line 1158, in open_usrp self.__set_rx_from_osmosdr() File "./scope.py", line 907, in __set_rx_from_osmosdr self.__build_graph(self.src, capture_rate) File "./scope.py", line 261, in __build_graph self.trunk_rx = trunking.rx_ctl(frequency_set = self.change_freq, debug = self.options.verbosity, conf_file = self.options.trunk_conf_file) File "/home/sean/sdr/op25/op25/gr-op25_repeater/apps/trunking.py", line 404, in __init__ self.build_config_tsv(conf_file) File "/home/sean/sdr/op25/op25/gr-op25_repeater/apps/trunking.py", line 446, in build_config_tsv nac = int(fields['nac'], 0) KeyError: 'nac'

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Where is the recipe?
by lists＠lazygranch.com [op25-dev] 03 Jul '16

03 Jul '16

4 4

Wireshark P25 patch
by 'Rucker, Karen (Assoc)' karen.rucker＠nist.gov [op25-dev] 30 Jun '16

30 Jun '16

I've been attempting to modify Wireshark to sniff P25 packets a la http://op25.osmocom.org/trac/wiki.png/wiki/WireSharkPage. I have the same version of Wireshark that the patch is made for, 1.8.5. My latest issue is 9 "redeclaration of enumerator" errors that come up when I attempt to compile Wireshark w/in Fedora. I have no idea where in the patch these are even declared. Any help? Sorry if this is a repost, I can't see any prior messages. Karen Rucker Intern National Institute of Standards and Technology - NIST | CTL | PSCR 325 Broadway, MS 671 | Boulder, CO 80305

4 3

scope encryption
by Sean Kealy superstardodge＠yahoo.com [op25-dev] 28 Jun '16

28 Jun '16

Is there anyway/where to enter a encryption when using the scope app?

1 0

scope
by Sean Kealy superstardodge＠yahoo.com [op25-dev] 26 Jun '16

26 Jun '16

Well i finally got scope working, turns out the problem was when i plugged in my rtl it installed the dvb driver, so I had to use the sudo rmod probe command and remove the kernel I have scope up and running , I want to listen to 139.5600,(mhz) its p25 1 non-trunked, but I cant seem to find it with scope, and my fft plot is in khzAny sugestions on what to use for a ./scope command? Im using ./scope rtl=0 -f 139.5600M Did anybody get the grc file I posted to work?

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op25
by Sean Kealy superstardodge＠yahoo.com [op25-dev] 12 Jun '16

12 Jun '16

I have finally gotten op25 up and running IN GRC (but not the scope apP), I can seet the op25 signals in my area on fft, but dont have any audio, any suggestions?

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