It all might depend on the age of the observer ... Much like the aircraft restoration mechanic at the Pima Air Museum when I asked about a manual for an electric prop-pitch motor. He was adamant that there was -never- such a thing, and wasn't to be convinced until I walked him over to a Constellation and showed him the power conduit going into the shafts of the props. (;)
BTW, the first widely-used AM aircraft frequency was 3105 KHz. 73! K0PP ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html