Any fatal flaws or (significant) bad design decisions in the Henry 3K-A?
After squinting at the schematic available at the BAMA site for a while
what I see so far is:
(1) A rather unusual "manual" soft-start circuit
(2) The grid metering is done directly, for some reason...?
(3) Operating bias looks to be established with a zener, but I really
don't understand the combination of RF choke and feedthrough cap that
appears to short the filament transformer center tap to one side of the
filaments... I must be looking at that one wrong!?
Any comments, stories etc?
Thanks,
Jim, N7CXI
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