In the days before voice telephony via radio, aviators used Morse code to communicate. Shorthand abbreviations included a whole bunch of Q** codes. These traditions are preserved now among the "Experimental Radio Association" or ARRL, similar to EAA. Just as the FAA has an amateur or experimental rule set, The FCC sets aside certain frequencies and authorises certain construction and operation of radios. Our main newsworthy interest and contact with regulators involves TVInterference, rather than occasionally dropping out of the sky in our entrepreneurial aerodyne. We have novice, technician, general, advanced, and extra levels of license and privileges, but no annual physicals.  When I trained as a Naval Aviator in the early 80's, we learned QNH is the minimum altimeter setting in the military TAF forecast. Should you have a com radio failure, only one barometric altimeter (no GPS or radar alt), and can only rely on your preflight planning to get you safely down the approach path, why would it be important to know what the lowest possible altimeter might be?  I wonder how many EAA members are also Hams.... I think the baby boomers grew up in an era of extraordinary post-war military surplus aircraft and radios. I keep wondering how the rich landscape of potential projects and fixer uppers, both in aviation and electronics, could be provided to today's youth. It seems most of these gadgets have become appliances, off the shelf, or in the electronics too micro/nano to be accessible to the experimentalist amateur.  Here is today's forecast for my favourite former NAS, now MCAS Miramar, San Diego: Ahhh tradition: TAF KNKX 2309/2409 13005KT 9999 SCT060 QNH3005INS TEMPO 2312/2315 VRB04KT 3200 BR BKN002 FM231800 29006KT 9999 FEW060 SCT200 QNH3010INS T08/2312Z T16/2316Z= What will you do, Marine, if your F-18 goes NORDO and the usual 100 foot ceiling marine layer is rolling in? How will your procedure vary  according to what time it is? Enjoy Bill Miller High to Low, Look out Below....