Ich bin *kein* Funkamateur. But actually I'm catching the air stuff via my Realtek RTL2832U dongle (using the "dvb_usb_rtl28xxu" driver).
Since my (integrated) sound card supports up to 384 KHz, I just connected the "Microphone IN"
with some antenna I've prepared for it.
Using Audacity I can record/receive smth.,
just like the DCF-77 signal.
;-)
My Raspberry Pi also got his GPIO where I've already tried to (de-)modulate my own information with it. It rumored it supports up to ~500 MHz..
TODOhehe.. that's another possibility for 'receiving data'! ^_^!
BigFM (128 KBit/s .mp3)JFYI: In the WWW there are also 'real' SDR streams available. Some 'nerds' receive them to make them public via the internet. ;-)