4 ms·

That’s great. I am wondering what was the throughput at that distance...

• dfox 9y ago
  It's LoRa, so probably 50-ish byte packet transmitted at 800-ish bits per second.
  • ju-st 9y ago
    How many channels does LoRa have?
    • dfox 9y ago
      It is variable-bandwith spread spectrum modulation, so talking about discrete channels does not make that much sense. But each of frequency bands it operates in is notionally divided into 9-11 uplink and downlink channels. The modulation scheme is essentially FM with a twist: high bitrate mode is essentially straight FSK and lower rate modes are FM modulated with sawtooth, which is or is not inverted in each period depending on the transmitted bit. The idea is essentially same as various QRP modes involving painting images on waterfall diagram. (Full gateway nodes receive full band and can track ~50 transmitting nodes at once)
  • tikwidd 9y ago
    Do you think it would be possible to build an IPFS network over LoRaWAN?
    • api 9y ago
      Sure but it would be slower than moles' asses in January.
  • telkamp 9y ago
    Yes, we reached this 700+ km gateway at SF9 (1758 bps) and SF11 (537 bps).