Software Defined Radio

RTL

Ich bin *kein* Funkamateur. But actually I'm catching the air stuff via my Realtek RTL2832U dongle (using the "dvb_usb_rtl28xxu" driver).

Antenna

Soundcard

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. ;-)

GPIO

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..