Very interesting thread - which I can only sit and read with eyes wide open. Much of what is being talked about relates to that period when the commercial equipment for Amateurs was still 'understandable'. A little later, the circuitry, components and construction took things to a level where some professional expertise was all but essential. What goes on inside my more recent Trios and Kenwoods is something I have rarely (if ever) delved in to
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