6b9cd2d317
* Uses same shared architecture and symbol processor pattern as other C4FM decoders. * Adds soft symbol processing and sync detection. * Removes RRC filter and replaces with improved channel filter. * Viterbi soft symbol decoding with demodulator reliability weighting * Improved sync reacquisition in low SNR * Improved handling for phase wrapping and interpolation * NAC Tracker updated to track by NAC count * Native buffers returning partial buffers * Message processor uses only valid LDU1 words * Reduced phantom TDU messages * Tuner/Channe frequency error corrections don't reset the symbol trackers and fix possible divide by zero error * LSM timing error detector now updates per symbol block size instead of sample buffer size - faster convergence * New unit tests * Resolves several issues, including a lagging sync detect offset issue in the recently updated P25P1 C4FM decoder. * Consolidate filter designers for each protocol back into the FilterFactory class. * DMR, P25 Phase 1 C4FM and LSM, and P25 Phase 2 decoders design the baseband filter once and share the taps across the I and Q filters. Co-authored-by: denny <dennis.sheirer@gmail.com>
MacOS Tahoe 26.1 Users - Attention:
Changes to USB support in Tahoe version 26.x cause sdrtrunk to fail to launch. Do the following to install the latest libusb and create a symbolic link and then use the nightly build which includes an updated usb4java native library for Tahoe with ARM processor. There may still be issue(s) with MacOS accessing your USB SDR tuners.
brew install libusb --HEAD
cd /opt
sudo mkdir local
cd local
sudo mkdir lib
Next, find where brew installed the libusb library, for example: /opt/homebrew/Cellar/libusb/HEAD-9ceaa52/lib/libusb-1.0.0.dylib Note: the folder "HEAD-9ceaa52" is the version stamp for HEAD when you installed from it.
Finally, create a symbolic link from the installed library to the place where usb4java is expecting to find libusb (/opt/local/lib/libusb-1.0.0.dylib)
sudo ln -s /opt/homebrew/Cellar/libusb/HEAD-9ceaa52/lib/libusb-1.0.0.dylib /opt/local/lib/libusb-1.0.0.dylib
sdrtrunk
A cross-platform java application for decoding, monitoring, recording and streaming trunked mobile and related radio protocols using Software Defined Radios (SDR).
Figure 1: sdrtrunk Application Screenshot
Download the Latest Release
All release versions of sdrtrunk are available from the releases tab.
- (alpha) These versions are under development feature previews and likely to contain bugs and unexpected behavior.
- (beta) These versions are currently being tested for bugs and functionality prior to final release.
- (final) These versions have been tested and are the current release version.
Download Nightly Software Build
The nightly release contains current builds of the software for all supported operating systems. This version of the software may contain bugs and may not run correctly. However, it let's you preview the most recent changes and fixes before the next software release. Always backup your playlist(s) before you use the nightly builds. Note: the nightly release is updated each time code changes are committed to the code base, so it's not really 'nightly' as much as it is 'current'.
Minimum System Requirements
- Operating System: Windows (
32 or64-bit), Linux (32 or64-bit) or Mac (64-bit, 12.x or higher) - CPU: 4-core
- RAM: 8GB or more (preferred). Depending on usage, 4GB may be sufficient.