op25-dev

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312 discussions

help with repeater
by Ryan Schilder 29 Dec '13

29 Dec '13

ok i'm about ready to pull my hair out with this one. Can anyone get the op25 repeater to work? I'm trying to run disc_tap.py and it always gives me the same error: chan_usrp_rx expected 4 arguments, got 3 I've looked through the disctap_rx.py and repeater.py at the appropriate lines. I see where disctap_rx.py is calling chan_usrp_rx with 3 variables, and i see where repeater.py expects 4 variables. Now what? -Ryan KC9GMY

3 16

P25 at 800MHz
by Jacob Blanks 28 Dec '13

28 Dec '13

Hi folks! I don't no if this is the right way to request help regarding op25. Let me try :). I am trying Op25 decoder (scope.py) + USRP. Although I can get the air interface signal, the error rate is too high and the voice signal is rarely intelligible. The radio I have is setup in direct mode in 800MHz (a bit higher than the ones I saw in previous work). Using the signal analyzer app (osmocom_fft.py) I can detect the signal with a high power level using the same antennae and gain settings. I have already run the scope.py (osmocom) and got the audio and radio info. It seems that the scope.py+USRP request a high frequency offset (7.5kHz) to tune the carrier and try to decode the air interface signals. I have: USRP_N210+WBX+tuned_antenna+Ubuntu+GNURADIO-3.6.5.1+OP25_osmocom. May the higher frequency request another setup I missed? Am I missing many details? :) TIA

2 1

Raspberry pi op25
by Ryan Schilder 27 Dec '13

27 Dec '13

Think it would be possible to make an op25 repeater out of a raspberry pi? I literally know just about nothing on the pi, so I won't be shocked if it's not possible. I've managed to get the transmit side of op25 working with a yaesu ft7800r. It would be sweet to get a cheap p25 repeater made. Just a thought. Ryan kc9gmy On Dec 24, 2013 1:21 AM, "Steve Glass" <stevie.glass(a)gmail.com> wrote: > > > The server is now back up and the git stuff all ok. To clone from git > you can just run: > > git clone git://op25.osmocom.org > > The wiki will need updating to reflect this and we shall start hosting > tarballs as attachments on the build instructions page. > >

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WARNING - op25.osmocom.org is temporarily going off the air
by Steve Glass 24 Dec '13

24 Dec '13

Hi Everybody! As I've mentioned elsewhere we're taking the osmocom trac instance offline whilst we switch to the new git repository. The site may be down for around eight hours or so. Once restored we'll have a period where the build guides do not reflect the current codebase. I shall modify the build guide (unless I can find a volunteer) to refer to the tarballs and have a subsection on building from git. All this is because we want to do more new things and we're trying to limit the number of build steps and external dependencies to make things easier to install and use. Once this is up we may even start responding to tickets :) Steve

4 7

ecc for ldu1 and ldu2 [4 Attachments]
by Matt D 22 Dec '13

22 Dec '13

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 i improved the ecc for the ldu1 and ldu2. I added clearer comments, shortened the code/lowered the amount of calculations it does, and put the entire routine into one function. I have been running it for days now with no seg fault. - -- - ------ Matt D - ------------ -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.21 (GNU/Linux) Comment: MacGPG2 - http://www.gpgtools.org/macgpg2.html Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJStbhgAAoJECrdp7MWSIVbtHMIAJ71NZzINEGpLdFLjzA5HxKo QVK6dTw1hc8JusFRO+49pYAi3CXonu+RS66MDHhdZVZ8bvUHjalMa9rrxz6DWAEl pmHDE1XMKJ6+alm0ZwykvkK0JNomEy4LV6x+Q+uBq/D1hRc4ak/B87kvwfEnqx1q Mk3sHJgGKY5KXgLs3hkYw2ws9tUuu2he/K9o8UanP2NfepdSAmK0IYKZHDpMJLya qYBjTdn2GlKih5l1EppBsFgRubDTjSPCKnriZ8f0IuqRWl53HdmLLAU1XglxuIwe Cph1AJXYUkiYG9uET8ym03EWXqlO1z3ZNeLZXSyp7iY4xFMHLyee+V3HS1mY/G0= =410A -----END PGP SIGNATURE-----

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transmitting nac
by Ryan Schilder 17 Dec '13

17 Dec '13

Can the nac be changed for transmitting? Haven't had a ton of time to look through the source. Ryan kc9gmy On Dec 16, 2013 11:29 AM, "Matt D" <md123(a)nycap.rr.com> wrote: > > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi, > Would it be possible to add scanning capability to op25 so we could > scan a list of freqs or search for active freqs within some range? > > If adding this feature is possible where would one start? > - -- > - ------ > Matt D > - ------------ > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v2.0.21 (GNU/Linux) > Comment: MacGPG2 - http://www.gpgtools.org/macgpg2.html > Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ > > iQEcBAEBAgAGBQJSrzhgAAoJECrdp7MWSIVbL8oH/2LVZBAkNvVUNBmhzCmnz7Uu > d86hfbmWA1GvjgMfNggp0PWgsEycbLIFq/syvTHQn8O0vjKGz0CF+3wgZ7bFujPt > 6vMobr8iINNDub4n1bKsfLPiPzHpRt9paDB7M8Y0VszQrewaHYqNRp7/HFnMWkkO > pOhUWJEeyn2Bv0MgNTAWt5owtJxjLtUCRDGcalXbSFWdrAr8BZdcG85htl55F3uE > pd7DNKZgtR+dldJeRplih6bbSpDZbBxsbjOff59Wp892HhgIYsYGa7NhtFZe3BA5 > Y7GVnhEiX4fKunyCYzAtm0DwgjmsmE6Jn4V+ptN40m0I/sJIe6I/DoayvkiFduA= > =ApBi > -----END PGP SIGNATURE----- > >

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scanning capability
by Matt D 17 Dec '13

17 Dec '13

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, Would it be possible to add scanning capability to op25 so we could scan a list of freqs or search for active freqs within some range? If adding this feature is possible where would one start? - -- - ------ Matt D - ------------ -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.21 (GNU/Linux) Comment: MacGPG2 - http://www.gpgtools.org/macgpg2.html Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJSrzhgAAoJECrdp7MWSIVbL8oH/2LVZBAkNvVUNBmhzCmnz7Uu d86hfbmWA1GvjgMfNggp0PWgsEycbLIFq/syvTHQn8O0vjKGz0CF+3wgZ7bFujPt 6vMobr8iINNDub4n1bKsfLPiPzHpRt9paDB7M8Y0VszQrewaHYqNRp7/HFnMWkkO pOhUWJEeyn2Bv0MgNTAWt5owtJxjLtUCRDGcalXbSFWdrAr8BZdcG85htl55F3uE pd7DNKZgtR+dldJeRplih6bbSpDZbBxsbjOff59Wp892HhgIYsYGa7NhtFZe3BA5 Y7GVnhEiX4fKunyCYzAtm0DwgjmsmE6Jn4V+ptN40m0I/sJIe6I/DoayvkiFduA= =ApBi -----END PGP SIGNATURE-----

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failed test on make test
by Matt D 12 Dec '13

12 Dec '13

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 i checked out 328 from the svn source and now I get this when trying to build. make[2]: Leaving directory `/home/matt/op25/blocks/src/lib' Making check in python make[2]: Entering directory `/home/matt/op25/blocks/src/python' make check-TESTS make[3]: Entering directory `/home/matt/op25/blocks/src/python' Traceback (most recent call last): File "./qa_op25.py", line 24, in <module> import op25 File "/home/matt/op25/blocks/src/lib/op25.py", line 24, in <module> _op25 = swig_import_helper() File "/home/matt/op25/blocks/src/lib/op25.py", line 16, in swig_import_helper import _op25 ImportError: /home/matt/op25/blocks/src/lib/.libs/_op25.so: undefined symbol: _ZNK4ldu23lcfEv FAIL: run_tests ================== 1 of 1 test failed ================== make[3]: *** [check-TESTS] Error 1 make[3]: Leaving directory `/home/matt/op25/blocks/src/python' make[2]: *** [check-am] Error 2 make[2]: Leaving directory `/home/matt/op25/blocks/src/python' make[1]: *** [check-recursive] Error 1 make[1]: Leaving directory `/home/matt/op25/blocks/src' make: *** [check-recursive] Error 1 matt@matt-Inspiron-1525:~/op25/blocks$ I cant shake it; any help will be much appreciated. - -- - ------ Matt D - ------------ -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.21 (GNU/Linux) Comment: MacGPG2 - http://www.gpgtools.org/macgpg2.html Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJSp30lAAoJECrdp7MWSIVbcDcH/0BdZHVshXzC1m72OfXYw4bV r1rYlYSKJCC2yslR2aM12Bf4tiEwapHRuATpNTdm+6a8FeM5nXPy/e/0N327PB42 JJ9aFLLE0e0f1KBgKwg3WJwpjEl2tSyVfr16bn1BrkpukwDHIXylyFkPQQSAeQGK 3FkWkAf10ivDbyJHUqF8wAIiSmoz8satXAvR+lkS2n0WLXQqxAUPfwzOj+/IdLza HY3lFhkn+FAvThzCewmiX9pYGzSW6jU3ZdbCRXgtkRus+srIxSkhrBRSZ1u1L5BK mfeVuNobRp+LMZ8OWBN79XiJ1ySPPj6ZHAxx4CKy3DqvOlg3VHEOSxemYKINBgg= =QR5x -----END PGP SIGNATURE-----

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problem using yank()
by Matt D 12 Dec '13

12 Dec '13

I am trying to get the 240 Link Control Word bits out of the LDU1 frame using this: void ldu1::decode_lcw() { const size_t LCW_BITS[] = { 410, 411, 412, 413, 414, 415, 416, 417, 418, 419, 420, 421, 422, 423, 424, 425, 426, 427, 428, 429, 432, 433, 434, 435, 436, 437, 438, 439, 440, 441, 442, 443, 444, 445, 446, 447, 448, 449, 450, 451, 600, 601, 602, 603, 604, 605, 606, 607, 608, 609, 610, 611, 612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 622, 623, 624, 625, 626, 627, 628, 629, 630, 631, 632, 633, 634, 635, 636, 637, 638, 639, 788, 789, 792, 793, 794, 795, 796, 797, 798, 799, 800, 801, 802, 803, 804, 805, 806, 807, 808, 809, 810, 811, 812, 813, 814, 815, 816, 817, 818, 819, 820, 821, 822, 823, 824, 825, 826, 827, 828, 829, 978, 979, 980, 981, 982, 983, 984, 985, 986, 987, 988, 989, 990, 991, 992, 993, 994, 995, 996, 997, 998, 999, 1000, 1001, 1002, 1003, 1004, 1005, 1008, 1009, 1010, 1011, 1012, 1013, 1014, 1015, 1016, 1017, 1018, 1019, 1168, 1169, 1170, 1171, 1172, 1173, 1174, 1175, 1176, 1177, 1178, 1179, 1180, 1181, 1182, 1183, 1184, 1185, 1186, 1187, 1188, 1189, 1190, 1191, 1192, 1193, 1194, 1195, 1196, 1197, 1198, 1199, 1200, 1201, 1202, 1203, 1204, 1205, 1206, 1207, 1356, 1357, 1358, 1359, 1360, 1361, 1362, 1363, 1364, 1365, 1368, 1369, 1370, 1371, 1372, 1373, 1374, 1375, 1376, 1377, 1378, 1379, 1380, 1381, 1382, 1383, 1384, 1385, 1386, 1387, 1388, 1389, 1390, 1391, 1392, 1393, 1394, 1395, 1396, 1397, }; int * encoded_lcw = new int[240]; yank(frame_body(), LCW_BITS, 240, encoded_lcw, 0); correct_lcw( encoded_lcw ); delete [] encoded_lcw; } What am I doing wrong here? the output is obviously wrong: LDU1 LCW Data-------------------------------------------- ----------------------------------------------------------- Encoded LCW: LCF: 00111011 MFID: 00110000 TGID: 0000000100000000 Source ID: 000100000000000001000100 Hamming decode: LCF: 00111011 MFID: 00110000 TGID: 0000000000000000 Source ID: 000000000000000000000000 RS decode: LCF: 00111011 MFID: 00110000 TGID: 0000000000000000 Source ID: 000000000000000000000000 ------------------------------------------------------------ I am pretty sure there is something wrong with how I am using the yank(), but I have been able to find something else to try. Any help will be much appreciated. Thanks. -- ------ Matt D ------------

2 5

project announcements
by ikj1234i＠yahoo.com 10 Dec '13

10 Dec '13

I'm pleased to announce a major new OP25 release, which may be downloaded at http://mattrobert.com/Wireless/op25-gr3.7-0.01.tar.gz The code has been completely reorganized with the following key changes: 1) This release of OP25 is compatible with GNU Radio version 3.7 (or newer) 2) The build system has been changed from autotools/autoconf to cmake 3) Support for gr-osmosdr has been added. This means that (in addition to USRP support) hardware support is extended to all devices supported by osmosdr (see http://sdr.osmocom.org/trac/wiki/GrOsmoSDR for a complete list of supported hardware) 4) Experimental trunk tracking support for IMBE voice channels now included (optimized for LSM/CQPSK) in the signal scope application Not all pieces (in particular the python scripts) have been converted to the new format yet. Other pieces (for example the Wireshark plugin) should continue to be downloaded from the SVN repository while we work on pulling them into to the new codebase. Please excuse the mess - we're working to make improvements and this release is the first step in that process. These code updates will be released as tarballs for the interim period until we can our GIT repository is established. Please notify the list of questions or problems with this new release. For more information about the trunking and voice support which has been added to the scope.py app see the wiki page at http://op25.osmocom.org/trac/wiki.png/wiki/SignalScopePage

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