Possibly the BEST overall site - and Rawles DOES cover COMMS, including Ham, CB, GMRS, and others - is Jim Rawles Survivalblog.com. Because he also knows his limitations, he solicits subject matter experts to chime in, which allows questionable info to be corrected quickly. His archive of info is also easy to search.
While Offgrid Survival focuses more on "roughing it" (in my observation), they did have this handy COMMS post a while back, that might especially be a handy handout for newbies.
While Offgrid Survival focuses more on "roughing it" (in my observation), they did have this handy COMMS post a while back, that might especially be a handy handout for newbies.