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Making our own valves (Tubes for the Non-English-Speaking Yanks)
As time passes, valves of the sort and size that we use in our TX's
are becoming increasingly rare and expensive. There is nearly a century of folklore and industrial craft in producing valves and overcoming problems thereto, and it seems to me that now is the time to gather together this expertise before all the associated craftsmen and industrialists go to the grave and their knowledge becomes lost forever. Armed with such a body of knowledge, could we Radio Hams, as a body of technically-motivated and technically-inspired aficionados, then consider manufacturing our own? Is it not, after all, our pride in such technical activity that sets us apart from the CBer who buys all his gear from a shop (and even sends it back their if ever it needs repair)? |