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![]() Decades have brought us moon landing, mars landings,masers, lasers, lets, fets, mosfets, computers, etc... But the shape of radio equip. has remained virtually stagnant. One "innovation" would be to just copy what the IBM clone has taught us. Build a radio of "cards." Just like the computer, a standard case which you can plugin various power supplies, frontend board "cards", intermediate board "cards", buffer amp board "cards", IF board "cards", audio board "cards", xmitter board "cards", final amp board "cards", etc.... I think you get the pic One radio case can/could virtually be any radio you can imagine.... new design in a frontend? Plug in a new front end "card", new audio offering? Plug in a new audio board "card." Someone really should get off a dead duff somewhere and DO IT!!!! Kinda makes ya wonder why not? Doesn't it? Warmest regards, John Not sure how restrictive your idea is, but it ain't new. You can even find the odd receiver on e-bay with cards for each function plugging into a bus - try Plessey for example. Even the ancient Davco DR-30 and the first solid-state heath transceiver (SB401 IIRC) used plug in RF, IF etc cards. Several modern scanners, especially portable ones have a selection of optional plug in cards for things like, extra channels, digital decoders, tone squelch etc. etc. I had an early Yaesu VHF/UHF receiver which had an optional plug in card video decoder. My Kenwood R-5000 has provision for a plug in VHF front end. I used to have a RACAL receiver, old enough to be antique now, which used plug in front ends for various coverage options, and I seem to recall it was a fairly common idea in those days. Dave |
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