blinry on Nostr: I spent ages trying to build my own decoder in GNU Radio. But I wasn't familiar with ...

I spent ages trying to build my own decoder in GNU Radio. But I wasn't familiar with it at all, and I eventually gave up. Still, that seems to be the software you wanna learn for tasks like these!

By the way, how the ground stations work is fascinating: In my case, it's a "Doppler VOR": It transmits a static frequency via amplitude modulation, and adds another signal that moves around in circles, so you get a Doppler frequency shift.

If you compare the two, you can calculate the angle!