An interesting facility has opened its doors and includes a part 15 radio station in addition to other services. It's called
The Computer Deconstruction Lab
Didn't know this site existed...a forum strickly for part 15 AM in the US.
Guess that leaves me out as I'm not in the US and I am on FM.
Always thought of having a forum Canada based on BETS-1 but other than Artisan and me how many here do this kind of thing.
It would have 2 members.
LPAM.net has been around for a long time. Their Forum looks barely used (last posts in the 2017 timeframe).
I don't think that the Big 3 (this Forum, the ALPB and Hobbybroadcaster have anything to worry about).
The CDL lab looks interesting, however.
The CDL is one of my projects - More info is at: https://isec.space/cdl/ and https://isec.space/cdl_1/
Construction pictures are at: https://isec.space/cdl_5/
SP