sdrtrunk is an application for decoding, monitoring, recording, and streaming trunked mobile and related radio protocols with software defined radio hardware.
It can trunk-track multiple analog and digital channels from one or more USB SDR tuners or from wideband baseband recordings, and it uses playlists, channel configurations, and aliases to manage decoding, audio playback, logging, recording, and streaming.
This is free and open source software.
Key Features
- Decodes and trunk-tracks a wide range of radio protocols including APCO-25 Phase 1, APCO-25 Phase 2, DCS, Fleetsync II, LJ1200, LTR-Net, LTR-Standard, MDC-1200, MPT-1327, Passport, AM, and FM/NBFM.
- Supports multiple SDR receivers including Airspy, Funcube Dongle, HackRF, RTL-2832, and SDRplay devices.
- Can decode live radio from connected SDR hardware or use wideband baseband recordings as offline tuners.
- Provides a playlist editor for organising channels, decoders, and alias lists.
- Lets aliases control actions such as recording, streaming, muting, audio alerts, and script execution.
- Includes RadioReference integration for searching systems, importing channels, and importing talkgroups into alias lists.
- Supports audio streaming workflows including Broadcastify Calls and Broadcastify Feeds configuration.
- Cross-platform support – runs under Linux, macOS, and Windows.
Website: github.com/DSheirer/sdrtrunk
Support:
Developer: Denny Sheirer
License: GNU General Public License v3.0

sdrtrunk is written in Java. Learn Java with our recommended free books and free tutorials.
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Read our verdict in the software roundup.
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