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A repeater would have to handle all possible LoRa channels someone might use, right? Most likely it would have more complex hardware (e.g. something like this:
by cozzyd 6y ago
A repeater would have to handle all possible LoRa channels someone might use, right?
Most likely it would have more complex hardware (e.g. something like this: https://www.adafruit.com/product/4284 https://www.adafruit.com/product/4284)
- bigiain 6y agoI haven't looks deeply into Meshtastic's repeater mode, but it runs on the same hardware as regular nodes. (None of my current personal experimental use cases call for repeaters.) What I do recall is it can "repeat" encrypted "channels" by just replaying the encrypted packets without having any keys to read them (I think there's some very minor metadata in the unencrypted part of the packets, perhaps just a hop count?) Also note that "channels" in Meshtastic are not frequencies like in typical UHF terminology - but pre shared encryption keys. I _vaguely_ recall maybe they get used to seed freq hopping algorithms (but I might be misremembering that). I think the big difference between "repeater nodes" and regular nodes is that the repeater settings shut down the GPS because its unnecessary power draw (on the assumption you know where you installed a repeater node), and participate in the mesh in a "hidden" way, so they don't show up as members you could communicate with.