3 ms·
Lora data rate is still maybe 100x or 1000x higher than I'd want. I'd like something just fast enough for text chat, let's say 10 bps (maybe 3 chars/sec with s
by throwaway81523 1y ago
Lora data rate is still maybe 100x or 1000x higher than I'd want. I'd like something just fast enough for text chat, let's say 10 bps (maybe 3 chars/sec with some data compression), and a fallback slower rate for messaging, like 1 bps or slower (2 minutes for a 50 char messsage). That would give another 20 or 30 db of coding gain for much better range. There could even be a .01bps mode. Finally, put it on HF for worldwide range ;).
This is all deployed by hams down to around 1 cps, by the way (js8call.com).
- phreeza 1y agoI guess this would require a Ham license in most places? Apart from that i would really like a device like you describe (extremely low bps, high range).
- throwaway81523 1y agoJS9CALL on the ham bands requires a ham license but in principle you could use it on the unlicensed bands as well.
- sidewndr46 1y agoDo you mean JS8Call?
- throwaway81523 1y agoOops yes.
- akvadrako 1y agoThe Lora radios also have a longer-range 325 bits/slower mode called LR-FHSS which does frequency hopping and has 10-60 dB better sensitivity. Though only the sending part is implemented in the low power chips.