Hacker Spaces

Raspberry Pi

/tmp/ham Episode 1: Raspberry Pi, weak signals (WSPR) and filters

There’s something very nice with Raspberry Pi (RPi) is that you can use it’s GPIO output capability and somewhat precise clock to generate radio signals, especially weak signals radio signals (WSPR). These weak signals can travel thousands of kilometers and be received by foreign stations across the ocean. (No we’re not talking about receiving these radio signals with RTL-SDR, even though it’s nice too). HAM License prerequisite… is not so