,
If you are looking for a new radio protocol, new
modems, I remind you
that I have just created the project "New Packet Radio". You can
experiment it right now, it's 100% open source! (hardware and software).
https://hackaday.io/project/164092-npr-new-packet-radio/
Is the hardware available in the US? Many here are interested in the
project but nobody has looked at buiiding it from scratch.
Thanks for doing this...
Bill