op25-dev

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310 discussions

OP25 with AGC (automatic gain control)?
by James Qiu 27 Feb '20

27 Feb '20

Hi Currently I'm using a command line like: ./rx.py --args 'rtl' -N 'LNA:49' to adjust the LNA gain of the RTL-SDR. Is there a way to do AGC? Near me, the 700Mhz channel is really strong, but 800Mhz is really weak. So AGC would be very useful. Also if not easy, what other gain and ranges I can adjust? What's the max value for LNA gain? Thanks James

1 0

header intact
by efjoseph＠earthlink.net 18 Feb '20

18 Feb '20

header intact

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OP25, SDR, DMR, TX
by Владислав Д. 22 Jan '20

22 Jan '20

Good evening, Would You kindly to answer a few questions about the OP25 project and how to organize a transmitter with it using SDR devices (RTL-SDR, LimeSDR)? In the creation process of DMR-standard transmitter in the GnuRadio environment, we came across the absence of some necessary blocks: 4FSK modulator, DMR encoder, packet shaper. Inside the OP25 project we found a file that contains some functionality of DMR TX (dv_tx.py), but only in form of code, not as a GRC block. Could you tell us does this file fully implements the TX-side of the DMR system and whether there is an analogue of it, in the form of a GRC block for GnuRadio? We will be very grateful if you can help us sort this out. Yours faithfully, Vladislav.

2 1

CMAKE Issues on current distros
by op25＠zellners.com 04 Dec '19

04 Dec '19

Any updates to fix the CMAKE issues? https://github.com/boatbod/op25/issues/25 d$ make [ 21%] Built target gnuradio-op25 [ 23%] Built target test-op25 [ 24%] Built target _op25_swig_doc_tag [ 26%] Built target _op25_swig_swig_tag [ 29%] Built target op25_swig_swig_compilation [ 31%] Built target _op25_swig [ 33%] Built target pygen_op25_gr_op25_swig_ac751 [ 34%] Built target pygen_op25_gr_op25_python_b78db [ 34%] Built target pygen_op25_gr_op25_apps_383eb [ 51%] Built target imbe_vocoder [ 78%] Built target gnuradio-op25_repeater [ 85%] Built target op25-d2460 [ 86%] Built target scan4sync [ 87%] Built target BER [ 90%] Built target test-op25_repeater make[2]: *** No rule to make target 'op25/gr-op25_repeater/swig/op25_repeater_swig.py', needed by 'op25/gr-op25_repeater/swig/op25_repeater_swig.pyc'. Stop. make[1]: *** [CMakeFiles/Makefile2:954: op25/gr-op25_repeater/swig/CMakeFiles/pygen_op25_gr_op25_repeater_swig_a9103.dir/all] Error 2 make: *** [Makefile:130: all] Error 2 ddejr@ddejr-pc:~/op25/build$ same result using "./install.sh" method http://osmocom.org/issues/4225 "make2: * No rule to make target 'op25/gr-op25_repeater/swig/op25_repeater_swig.py', needed by 'op25/gr-op25_repeater/swig/op25_repeater_swig.pyc'. Stop. make1: [CMakeFiles/Makefile2:874: op25/gr-op25_repeater/swig/CMakeFiles/pygen_op25_gr_op25_repeater_swig_26094.dir/all] Error 2 make: [Makefile:130: all] Error 2 [ 26%] Built target gnuradio-op25 [ 29%] Built target test-op25 [ 30%] Built target _op25_swig_swig_tag [ 32%] Built target _op25_swig_doc_tag [ 36%] Built target op25_swig_swig_compilation [ 38%] Built target _op25_swig [ 40%] Built target pygen_op25_gr_op25_swig_388ba [ 42%] Built target pygen_op25_gr_op25_python_4bea1 [ 42%] Built target pygen_op25_gr_op25_apps_383eb [ 63%] Built target imbe_vocoder [ 86%] Built target gnuradio-op25_repeater [ 89%] Built target test-op25_repeater [ 91%] Built target _op25_repeater_swig_swig_tag make2: No rule to make target 'op25/gr-op25_repeater/swig/op25_repeater_swig.py', needed by 'op25/gr-op25_repeater/swig/op25_repeater_swig.pyc'. Stop. make1: [CMakeFiles/Makefile2:874: op25/gr-op25_repeater/swig/CMakeFiles/pygen_op25_gr_op25_repeater_swig_26094.dir/all] Error 2 make: * [Makefile:130: all] Error 2" This breaks OP25 for dummies the most used HOWTO... and even using just the standard git and running the install.sh

2 1

Attribute Error: 'file_source_sptr' object has no attribute 'set_gain_adjust'
by Bender, Theresa 24 Jul '19

24 Jul '19

I'm trying to make a OP25 Transmitter with a B200 mini, as in the video. I'm using the same command line as in the video (./dv_tx.py -p p25 --args 'uhd' -t ./1011.dat -r -Q 430137500 -q 1 -gains 'PGA:90 -v 3 -i 400000). I keep receiving the error "Attribute Error: 'file_source_sptr' object has no attribute 'set_gain_adjust'". I'm new to using SDRs and the B200 mini, so I'd appreciate any advice! Thanks!

4 12

Logging functions Q's
by scancaster＠scancaster.net 23 Jul '19

23 Jul '19

Before I go down a hole and end in a dead end.... I have some questions on using the -L option for "logging." Logging in my universe means logging the audio to Dictaphone/tape/disk/CD/what ever physical media... NOT the -v option, thats a log, not logging! :) ;) So after reading about 30 different files on this -L option, it appers that it will act as A LOGGING RECORDER and RECORD the audio to disk... Great! What I am after is to record UNKNOWN GROUPS for analysis for ID purposes.... My question(s) are what options are used with this for: rx.py trunk.tsv whitelist.tsv blacklist.tsv ie: rx.py example ./rx.py --args 'rtl' -N 'LNA:47' -S 2400000 -f 8xx.xxxxe6 -o 25000 -q 72 -L 4 -v 10 -T trunk.tsv -V -2 -U -O loop0 -M mysystem.json -l http:192.168.0.26:8080 -x 3 2>> stderr.2 trunk.tsv then REQUIRES a "center frequency" for the system... 8xx.xxxx based on the channels of the system... I've determined this for this system, and it will just fit the way this is setup. This will then RECORD the various groups that are NOT BLACKLISTED to disk as WAV's from what I understand... Correct???? Ie: OP25 tunes to a group, it records it. Anything that is exlusive of each other on this -L option with other optons for rx.py???? Any thing I am missing in this????? Goal is simple to log any group I've not blacklisted as known user/use.. Thanks.

3 2

A couple Q's - RID Aliases? CC Data
by op25＠zellners.com 26 Feb '19

26 Feb '19

In reviewing the various setups of trunking_file.tsv, id_file.tsv etc... and looking over various documentation, I am not seeing a means to do RID(LID) or Radio ID aliasing... I am I missing this some place??? The systems can be setup to alias out $47E136 as "Helo1" etc... The systems have places to do this from the start and update from consoles etc... Any way to do that in OP25???????? ie: rid.tsv 47e136 Helo1 47e137 Helo2 etc... Turning RID into an alias would be a plus to ID units... ie: Ladder1, Ladder1_Portable, FF152521, etc.. Many of these are pretty static.. now some depending on you agency(s) may not be... in on a particular group would need some updates each year, as they change based on a progression system. CC Data is there some sort of aggregate that determines the quality of the CC data coming out???? That can accessed programmatically??? Or maybe that question is better referenced as is the there something that documents the API to OP25 that the various python scripts are using to possible do what I want... The plots are not useful as I desire text data to use in another place.... So I guess something that documents interacting with the underlying mechnations of OP25 would probably help to do what I am after with the CC. Thanks.

2 6

Audio Dies Pt2 and JSON meta tags????
by op25＠zellners.com 25 Feb '19

25 Feb '19

As the next round of P25 PII systems take hold in my area... OP25 is the goto solution... but... Audio dying is not a good thing... to send out silence on feeds.... Seems this is related to the metatag update when using -M tags.json option with rx.py... Whats frustrating is Pi3B+ with a cheapo junky asian dongle WORKS with -M tags.json and the audio goes on... .. I have another issue not related to that, which a commit fixes, just can't update to handle that right now... A DUAL CORE laptop with a junk asian dongle... the audio dies after awhile. SAME DUAL CORE laptop with a V3 Blog dongle... audio dies after awhile SAME DUAL CORE laptop with V3 blod dongle, REMOVE the -M option and the audio seems to be stable out to loop0! URRRGGRRRHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH! The only thing I can seem to possibly pinpoint is my standard A1 whipping or flogging boi,,, puslecrapdio! RURRRRRHHGHHH! The laptop has it the Pi3 doesn't.... Any one else seeing similar ? ? ? ? ? Once I have a new image setup for my Pi feed boxes.. and if that works reliably great...it seems to on my existing feed, other issue not witstanding..... Jusy annoying that a laptop has these issues where as a Pi3B+ doesn't...... I am grasping for answers here... and as I said... my standard A1 whipping or flogging boi,,, puslecrapdio! just gets my attention and foucs as the problem area. So to wrap up my screed and vent BS post.. .:) ;) Any seeing similar with xUbuntu's 18.04 or even other distros on lap/desktops v. Pi3B+??? Welp... there goes my theory in the time it took to type this OP25 is now not playing audio out loop0 again, and no -M option was used.... CC channel did rotate... (Harris nee M/A-COM system)??? So maybe CC rotation kills audio ? ? ? ? Any one with ideas? ? ? ? Bueller????

2 3

boatbod - github - NO issues link??? Bug report...
by op25＠zellners.com 23 Jan '19

23 Jan '19

Trying to report an bug/issue, but https://github.com/boatbod/op25/issues doesn't work, goes to wrong place, and there is no link on the main page of it. BUG: Program dies due to uncaught exception Details: When updating the metadata/"tags" to IceCast, if the connection has died for some reason, LAN goes down, what ever... There is an uncaught exception which will kill OP25 running. 1547434556.069343 set tgid=53, srcaddr=0 Exception in thread Thread-4: Traceback (most recent call last): File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner self.run() File "/home/pi/op25/op25/gr-op25_repeater/apps/icemeta.py", line 60, in run self.send_metadata(self.msg.to_string()) File "/home/pi/op25/op25/gr-op25_repeater/apps/icemeta.py", line 77, in send_metadata r = requests.get((requestToSend), auth=("source",self.cfg['icecastPass'])) File "/usr/lib/python2.7/dist-packages/requests/api.py", line 70, in get return request('get', url, params=params, **kwargs) File "/usr/lib/python2.7/dist-packages/requests/api.py", line 56, in request return session.request(method=method, url=url, **kwargs) File "/usr/lib/python2.7/dist-packages/requests/sessions.py", line 488, in request resp = self.send(prep, **send_kwargs) File "/usr/lib/python2.7/dist-packages/requests/sessions.py", line 609, in send r = adapter.send(request, **kwargs) File "/usr/lib/python2.7/dist-packages/requests/adapters.py", line 487, in send raise ConnectionError(e, request=request) ConnectionError: HTTPConnectionPool(host='audio.myserver.net', port=8000): Max retries exceeded with url: /admin/metadata?mount=/RedactedFeed&mode=updinfo&song=[idle] (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x691bc8d0>: Failed to establish a new connection: [Errno 110] Connection timed out',)) This is not about an issue with the connection, there was, and eventually led to the Pi being replaced as faulty or melted down from use of OP25 :) ;) If the max retries is exceeded or any error where the update fails, it shouldn't kill OP25 from running... Glad to add to the issues section of github, but see top part, for some reason its not there. (??????)

4 7

whitelist file changes?
by John Ackermann N8UR 23 Jan '19

23 Jan '19

Hi -- After a few months away, I fired up the op25 machine today and updated to the latest boatbod version. Great improvements, especially the web interface! I'm having a minor issue, though. It seems as though my whitelist file is no longer working. The log shows that it's being read, but doesn't list the included groups, and I'm hearing lots of traffic from TGs that aren't on the list. Has anything changed in whitelist handling? (My wl file is in two column format: TGID<tab>TAG which worked after patches that Graham applied last year.) And, by the way, thanks Graham for fixing the statistics.sh script; I never quite got around to that after the log file format changed. Thanks, John

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