Your question is not consistent. Plenty of radios operate in the microwave band. Do they work or not? You keep posting the wiki image saying it’s “only radio” that doesn’t work, but then you come down here and say “no radios” (at all). You also can’t ban microwave radios while allowing microwave ovens, since I can fashion a crude radio by bypassing the door interlock on a microwave oven and opening and closing it to send morse code.