blinry on Nostr: 38: Catch a LoRaWAN chirp This was a bit like trying to catch a rare insect! 🐛 ...
38: Catch a LoRaWAN chirp
This was a bit like trying to catch a rare insect! 🐛
LoRaWAN is a low-power, wide-area networking protocol, intended for "Internet of Things" applications.
You can see transmission in the lower half of the screenshot! It has a very cute structure: You can see eight "down-chirps", followed by two "up-chirps". That's the header, followed by the payload.
To look for the signal, I made a "baseband capture" in SDR++, and opened the recording in sonic-visualizer.
This was a bit like trying to catch a rare insect! 🐛
LoRaWAN is a low-power, wide-area networking protocol, intended for "Internet of Things" applications.
You can see transmission in the lower half of the screenshot! It has a very cute structure: You can see eight "down-chirps", followed by two "up-chirps". That's the header, followed by the payload.
To look for the signal, I made a "baseband capture" in SDR++, and opened the recording in sonic-visualizer.