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Why not wire one ear cup for your aviation and the other cup for ham
operations? If there are no connections then you should be able to hear both. Use a hand held mic for one or the other. -- Cy Galley - Bellanca Champion Club Newsletter Editor & EAA TC www.bellanca-championclub.com Actively supporting Aeroncas every day Quarterly newsletters on time Reasonable document reprints 1-518-731-6800 "Jim Weir" wrote in message ... There was a question the other day about an amateur radio (or any other two-way radio, for that matter) aboard the airplane. At least for amateur radio (part 97) I got an answer back from an old time FCC person who was in this business for a whole bunch of years. Names are omitted for reasons of privacy. Herewith the exchange...my questions, his answers. 97.101(b) says that an amateur station aboard an aircraft must be "...independent of all other radio equipment...". I've been having some discussions about this, especially my PERSONAL discussion because of what I do for a living (manufacture aircraft electronic devices). My interpretation of RADIO devices means that I can't run my 2-meter ham rig audio through a RADIO (transceiver) or use the RADIO audio to modulate the rig. That is about the extent of the "separation". It's not a real problem for most small aircraft where the aircraft (VHF) radio is AM and the 2 meter rig is FM. Where it becomes a problem is when the a/c is equipped with a HF rig and it gets tuned to the ham bands. More than one ham-licensed air transport pilot has done that and openly bragged that that's what is necessary to relieve the boredom of flying a large plane over the ocean. It does NOT preclude me from using my aircraft headset and microphone, even if that headset and microphone goes through an audio switching device (audio panel) to switch select between the aircraft RADIO and the ham rig. That's how I see it as well. As a matter of fact, it would seem to me dangerous to design a system where I would have to pull the headset plugs out of the aircraft radio and plug them in to the ham rig. This, of course, prevents me from monitoring any of the aircraft radios while using the ham rig. Not good, especially in a crowded environment where monitoring the aircraft radio is an item of safety. Agreed. I guess the question really is where the aircraft RADIO equipment stops and the rest of the aircraft systems start. Battery? Audio? The common sense definition of "the radio" would include the COMM transceiver(s) and any NAVAID devices. Electrical and audio panels should be excluded. Jim Jim Weir (A&P/IA, CFI, & other good alphabet soup) VP Eng RST Pres. Cyberchapter EAA Tech. Counselor http://www.rst-engr.com |
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