248fe3e4f7
- Fix two-channel synthesis asymmetry across polyphase channel boundaries. - TwoChannelSynthesizerM2: replace incorrect 2-path polyphase split (which applied different responses to each channel) with channel sum + prototype filter modulated to the channel boundary (+FS/4). - ComplexPolyphaseChannelizerM2: start on the middle block map when taps per channel is odd so adjacent channel outputs are phase coherent. - TwoChannelOutputProcessor: translate channel 2 by FS/2 using the absolute block index parity derived from the even-sized dispatch batches. - SynthesizerViewer: translate channel 2 before synthesis. - Add TwoChannelSynthesizerM2Test for flat, symmetric boundary response. 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.