Idahowalker:
Ask a local radio amateur club.
I have reached out to the local club at the university here in town. Have yet to hear back but I am sure they will have loads of information.
KrisKasprzak:
I have a similar system running where I monitor temps all around my house, garage and backyard.
Thanks for the info, Kris! Sounds like a pretty nice setup! That brings up another question though for me (not necessarily on this project but maybe a future one.) Under part 15 it says an amateur may have 5 devices but what does that mean exactly? Is it like your setup if you have 5 temperature sensors sending information back to one hub does that max that number out? (This would be my guess as each one is sending a signal) Or is it because they are talking to one hub its only one "device"?