https://stream.echo6.co/videos/watch/2913b4a5-5740-44a3-971a-eb35237990b9 This video shows how to setup Boatbod's OP25 for use with the RTLSDR and P25 Phase 1. This is using what I've included in DragonOS Focal R9. If you'd like to install Boatbod's OP25 on something else with GNU Radio 3.8 and python3, you'll have to use the DEV branch (for now) and make sure to apply the GR 3.8 patch before running the installer scripts. Hardware: RTLSDR Topics covered: Find the NAC, Setup the .tsv files, Start OP25 w/ RTLSDR and Pulse audio, Pull up GNUPlot, Tools: https://sourceforge.net/projects/dragonos-focal/files/ https://github.com/boatbod/op25/tree/dev https://www.hagensieker.com/wordpress/2018/07/17/op25-for-dummies/ https://www.radioreference.com/ Commands I used to get the NAC and run OP25 within the correct directoryNAC ./rx.py --args 'rtl' -N 'LNA:47' -S 2500000 -x 2 -f 857.3125e6 -o 17e3 -q 1 Adjust as needed for the log output and location of the .tsv file ./rx.py --args "rtl=0" --gains 'lna:47' -S 960000 -v 1 -q 1 -2 -U -T trunk.tsv -O pulse -X 2> /home/dragon/Desktop/stderr-stream0.2 Thu, 30 Apr 2026 15:25:59 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/2913b4a5-5740-44a3-971a-eb35237990b9 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.