OK Sir rtrafford and all Anybody remember the ole VHF radio / telephone hand sets? Looked like an old phone receiver. Sometimes in my lower wheel house at speed, the exhaust noise is a bit loud. I think I could use one on my Icom or Simrad radios. Yes, some Frankinsting needed, I can do it. I remember my ole Pierce Simpson 6 channel crystal vhf set with the telephone hand set. Flying in the wind and weather on an ole 20' Thompson open. All could hear me and I could hear all well. My ears were better then also.