SDRangel: Explore the electromagnetic spectrum with open source SDR software | Hacker News Reader

SDRangel: Explore the electromagnetic spectrum with open source SDR software

github.com

84 pointsteleforce9 comments

This github page is a really poor representation of the software for the unfamiliar. Try here instead: https://www.sdrangel.org/

It's like a radio signal workstation, cribbing from the "digital audio workstation" term in the music world.

Agreement. As a ham radio operator and sometimes programmer; I found the GitHub documentation utterly opaque.

So what does this do exactly?

The github as well as the wiki seem to be entirely devoid of the "this program does X, Y and Z", and no, "explore the electromagnetic spectrum" does not cut it.

https://www.sdrangel.org/

"Everything" isn't a bold statement here.

SDRangel is the easiest way I know of decoding NXDN and DMR/dPMR.

Years ago you were forced to use DSDPlus and other unwieldly and sometimes paid software.

Thread hijack: I dream of a TUI SDR Linux app, so I can SSH into a box with an sdr, control it, and somehow get audio back, either through some streaming port or somehow over the SSH link itself. I've looked but failed to find it - is the cli version of this app what I'm looking for?

Bonus points for waterfall display nicely rendered

Possibly close to what you describe, gqrx (a GUI SDR Linux app) has a remote control protocol that can be typed by hand or scripted over telnet. And it has the option to stream the audio over UDP to a remote host.

For a demo of the remote control protocol, see this video: "Ham Radio - Network sockets and remote control of GQRX SDR with telnet and python"[1]

[1] https://www.youtube.com/watch?v=7Rd7Sd9hRBo

SDR Sharp has a good server implementation. It doesn't send the entire I/Q stream (which is 2 megabytes / second for each MSPS at 8 bit precision), but rather sends the FFT processed waterfall plus only whatever you are currently tuned to. Works really well even on weaker network links. If bandwidth is not a problem you can of course just stream the entire I/Q, SoapySDR has that option.

I wrote this years ago with that intent, though I don’t know you’d get audio back in real-time.

https://github.com/madengr/ham2mon

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