For my application, I need a cellular gateway that can use LoRa as a backup network. I’d like to use class C multicasting to create a LoRa mesh network. My problem is, the Conduits don’t receive each other’s packets. This forum post suggests that I could modify the packet forwarder to change this by “[reversing] the IQ setting”. I searched the gateway’s configuration files and dug through the packet forwarder and LoRa gateway code in the Semtech Git repository, but I didn’t see any obvious filters or IQ settings. The closest thing I found was an option to invert the signal polarity, which didn’t help.
What prevents one Conduit gateway from hearing another’s LoRa packets? And how can I subvert this mechanism so that two Conduits can talk to each other?