▲ 434 ▼ TELL ME (lemmy.world) submitted 2 years ago by sebinspace@lemmy.world to c/lemmybewholesome@lemmy.world 335 comments fedilink hide all child comments TELL ME
[–] Bach37strad@lemmy.world 3 points 2 years ago (1 child) That's fascinating. I just picked up my first 10M radio, can you elaborate a bit? permalink fedilink source parent hideshow 2 child comments replies: [–] copymyjalopy@sh.itjust.works 3 points 2 years ago I'm not much of an expert but it's basically low power UHF radios that use a particular waveform and FFT process to decode signals that are well below background noise. My radio regularly picks up messages with an SNR -10. I like it to the GPS system's algorithms. The main drawback is that, because they're low power, you have to have LOS between antennas. permalink fedilink source parent
[–] copymyjalopy@sh.itjust.works 3 points 2 years ago I'm not much of an expert but it's basically low power UHF radios that use a particular waveform and FFT process to decode signals that are well below background noise. My radio regularly picks up messages with an SNR -10. I like it to the GPS system's algorithms. The main drawback is that, because they're low power, you have to have LOS between antennas. permalink fedilink source parent
