op25

  1. J

    OP25 Distorted Audio

    Hi All! I'm having the same issue as this thread: OP25 Audio Slow and Choppy I'm using a brand new RPI 4b (1gig) and new NooElec NESDR smart v4 running raspbian buster. I am trying to listen to the North Fulton Regional Radio System (NFRRSA). My first setup had audio that sounded terrible, so...
  2. boatbod

    OP25 and PulseAudio

    I just added the ability for op25 to send sound to the PulseAudio system in lieu of ALSA. This may or may not be a good thing depending on your Linux system as it seems some - notably RPIs of varying flavors - have issue with Pulse permissions, particularly it seems when you are running them...
  3. boatbod

    OP25 Configuration

    In an effort to make it just a little bit easier for people to set up their trunk.tsv files, I have created a small helper application called "cfgtrunk.py" which facilitates changing parameters without having to use a text editor. It's far from foolproof, but is easier than vi and less error...
  4. J

    OP25 on RTL-SDR: LNA Gain Setting Issues

    Hey, Thanks to boatbod's setup, OP25 is running nicely on an old laptop I had running Ubuntu 18.04. The only weird issue is that it seems like the SDR's noise floor's do not change significantly when messing with the -N 'LNA:xx' setting in OP25. The noise floor from what I have seen in GNU...
  5. T

    OP25 OP25 Volume increase by radio ID

    I'm in an odd situation.. our dispatchers all of a sudden got QUIET and they have been for a while now. The agencies haven't said anything to encourage them to raise the volume or anything, but they are hard to hear both on OP25 and my SDS100. Is it possible to increase volume by their radio...
  6. boatbod

    op25 frequency tracking

    I have ported Max's recently announced "-X" tracking code to the boatbod op25 repo. After experimenting with it a bit I changed the way the frequency corrections are handled so that it utilizes the source device's ppm correction then makes residual fine tuning adjustments much as if you had...
  7. M

    OP25 tuning errors

    Hi Guys, I ‘m running this on rapsberry pi and I ‘ve tried the following and they come up with very similar results. It will run for 1-15 minutes and then start throwing tuning errors. Please help! Here are the two I‘ve tried so far: ./rx.py -l http:127.0.0.1:8080 --args 'rtl' -N 'LNA:47' -S...
  8. qc

    Help With SDR Stream Project

    I have new Project need some advice, I like to set up a broadcastify stream, I have an Airspy R2 SDR our local police uses P25 Phase 1 trunk system they will be switching over to Phase 2 in June of this year, I'm looking for something where I could use a Raspberry PI with Sdrtrunk or OP25? like...
  9. marklt1

    Can OP25 receive P25 Nationwide Interoperability Channels?

    I am trying to receive 700Mhz Nationwide Interoperability Channels on my Raspberry Pi3B with OP25. Since these channels, such as 7CALL50 are P25 simplex RX channels with NAC 0xF7E, is that possible to do with the existing hardware and software that I have? I don't want a heavyweight or resource...
  10. NCAmateurRadioGuy

    OP25 DMR

    When using ./multi_rx.py dmr_rtl_example.json to recieve DMR, I get this error: Traceback (most recent call last): File "./multi_rx.py", line 402, in <module> rx = rx_main() File "./multi_rx.py", line 384, in __init__ config = json.loads(open(options.config_file).read()) TypeError...
  11. AB5ID

    OP25 - Novice Linux question

    Okay don't laugh too hard! :) I have an older version of OP25 running well. I want to update to the latest version to be able use the web interface feature. What terminal commands do I need to enter to update OP25 without messing up what I already have configured and set-up? Thanks!
  12. K

    OP25 with multi_rx.py / cfg.json and 2 conventional P25 Phase 1 channels but no audio

    I'm running OP25 made with Boatbod's build in an Oracle Virtual Box VM running Ubuntu 19.10 Desktop. I also have OP25 running on a Raspberry Pi4 with Boatbod's build under Raspian Buster Getting both running wasa snap thanks to Boatbod's build. I am attempting to monitor multiple...
  13. AB5ID

    The most frequency stable RTL-SDR

    Who currently make the most frequency stable RTL-SDR? I'm considering setting up Trunk Recorder for 800 MHz range and wondering what dongle has the least amount of drift over time and temperature. Thanks!
  14. F

    OP25, Liquidsoap, and Pulseaudio as a service problem

    Hey all, OP25 is an awesome product. I'm working to change my feeds over to this from a BCD996P2 because it's so much better on our system. OP25 and Liquidsoap run beautifully from the terminal but fail miserably as a service. I have an RPI 3B+, RTLSDR, and am running Raspbian Stretch...
  15. K

    How to use op25 w/ P25 systems spanning more than single RTL-SDR bandwidth

    Is there any way to assign multiple RTL-SDR dongles to a single running op25 instance when the talkgroup frequencies are over 3 MHz +/- from the control frequency? If not, is there another way to handle this w/ op25? Are people just using supported SDR with a larger bandwidth that is affordable...
  16. W

    OP25 "New" Undocumented Config File Option - 'key'

    In OP25, there is a file called multi_rx.py. On lines 114 - 115, there is a section of code: if config.has_key('key') and (config['key'] != ""): self.set_key(int(config['key'], 0)) This section of code appears to have been introduced on May 6, 2019. It appears that it is...
  17. I

    Interesting OP25 error/hang on ./install.sh

    I have been trying to install OP25 using Boatbod's git. I been hanging on 97% I have tried several times to redo the install and same result. I am not worried to much about this but just wanted to put it out there as an issue. This is on a Pi 3 A+ brand new raspbian 4.19. I have copied the log...
  18. F

    OSMOSDR source_c creation failure in op25

    I am fully aware of THIS post and i have followed it multiple times, however whenever i reinstall op25 with ./install.sh i get the same error over and over again: osmosdr source_c creation failure Traceback (most recent call last): File "./rx.py", line 921, in <module> rx = rx_main()...
  19. M

    OP25 and streaming to broadcastify on rpi3b+

    Followed the thread to setup OP25 to stream to broadcastify. I followed the config and am getting an error when launching darkice with the config. I am posting all of the config files. I am assuming that there is an issue with the sound card input/output on the Pi, just need verification from...
  20. M

    OP25 fails to start as a service

    I have the service configured as noted in the thread "Setting up op25 to stream to broadcastify" but in my case I just need to have it start on boot. This will be a headless instance with speakers connected to raspberrypi. It will not be connected to the internet thus not sending signal...
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