Is it standard for the microphone of a fixed VHF radio to act as a speaker when not transmitting? This is the way our VHF radio that we are replacing worked. With the main radio in the cabin and the mike stretched into the cockpit, it was easy to hear everything that was going on, whereas if the mike had not acted as speaker, it would have been hard to hear the radio from the cockpit.I can't find anything in the literature to confirm this while looking at models such as ICOM 304 or Uniden Solara. If it is a function found only in certain models, it is something I would need to know before purchasing.