You're absolutely right Mark, I should work on a Horus 4FSK transmitter. Thanks for the reminder!
I intend to fly multiple payloads - a LoRa tracker that I trust and gives me frequent transmissions, an APRS transmitter (honestly for the novelty of doing something that's been done before), and I could add a Horus 4FSK tracker to the list. Too bad I haven't managed to catch any RS41s here; all I have is a pile of DFMs and a half hacked DFM firmware that I don't trust to fly.
Erm, wait, I just re read
https://github.com/mikaelnousiainen/RS41ng - DFM17 support added!? News to me. That's amazing news! I have a bunch of them. I'll give it a go!
Thanks. I might see if a DFM can transmit APRS too - maybe I'll fly two. Looking at the DFM it looks like it has an output filter that'll attenuate anything far off it's native 400MHz so 2m might not fly well, but I did manage to send some APRS packets with one...so I'll see :)
Cheers
Patrick