4 ms·

Only run for 12h a day, transmitting every few seconds, and transmitting very few bytes. Even so! I thought I was moderately familiar with battery powered radi

Only run for 12h a day, transmitting every few seconds, and transmitting very few bytes. Even so! I thought I was moderately familiar with battery powered radios, but Lotek claims the NTQB2-1, which masses 0.26 grams, can last for 103 days at a 29 second interval. Their product photo shows it attached to a dragonfly! None of their documentation says what the EIRP is. I wonder about the effective radius. If you miss a transmission, that data is gone forever, of course. No way can it afford the power budget for acknowledgement packets.

codetrotter 6y ago
> Their product photo shows it attached to a dragonfly! That's pretty cool! Do you have a link? I couldn't find it.
- naavis 6y ago
  The product page had an embed of this: https://www.thestar.com/news/canada/2019/07/04/dragonflies-with-tiny-fanny-packs-show-migration-patterns-in-new-study.html https://www.thestar.com/news/canada/2019/07/04/dragonflies-w...
  - codetrotter 6y ago
    Awesome, thanks :)