I bought a pair of Chinese 2.4 GHz SX1280 boards before the DC3 came out. I was considering changing the crystal on it to cut the frequency in half. I had bought several Watkins-Johnson doubly balanced mixers to up/down convert the LoRa board into one of those ham bands.
The Outernet board made this whole thing much more obvious. It has a mixer just like moRFeus on it. It takes the output of the LNB (in the L-Band) and up-converts it to 2.4 GHz. For me, the 23 cm band is very attractive. There’s not a whole lot of modifications to get it to listen on that band since it’s right there in the L-Band. In all fairness, Outernet could come out with a 1240-1300 MHz transceiver for a ham version of LoRaWan. It could potentially out-perform AX-25 packet on VHF at 1200 and 96000 baud.
I would love to try it on a nearly dead band.