robotastic

Unfortunately, I wasn't able to find a nice generic way to make it easy to configure the PFBs. There is a good thread on it here, with some sample code: https://github.com/robotastic/trunk-recorder/issues/76 If I can get a block of free time I am going to try and take another tilt at it.

I did switch to FFT based filters and that helped a lot. CPU requirements are a lot less. Using RTLs with 2M sample size, instead of SDR more bandwidth also helps. It is a poor mans version of HW-based channelization.

Thanks! So I have been playing with it on a RPi3. There are instructions here on how to build for the RPi: https://blog.hypriot.com/post/building-a-64bit-docker-os-for...

It has about enough CPU to handle recording about 2 streams at the same time. I think part of the problem is that Raspbian does not have the GCC flags optimized for the processor in the RPi3 and doesn't have 64bit enabled. I played a little with this image: https://blog.hypriot.com/post/building-a-64bit-docker-os-for... and it seemed to help a bit, but I didn't see huge gains.

People are using it with the ODroid, and I think they are able to do about 4 simultaneous recordings at the same time.

If you are interested in trying to listen your local radio system, try out Trunk Recorder: https://github.com/robotastic/trunk-recorder It works with the cheap $20 RTL-SDR dongles.