AirRadio wrote:
Has anyone built a linear using a 6C21 or 750TH, I found one of these,
sadly heater o/c in a hamfest recently and thought it might make a
great project if I could find a bit more about it and a working
example, so if you have a 6C21 or a 750TH in your junk box then I
would be interested in making it into a project amp. It would go well
with my BC-610, ART-13 and other boatanchor radios. 73 Max M0GHQ
Yes!
Just last weekend I acquired a beautifully-constructed grounded-grid
amplifier from the estate of John Rollins, W1FPZ, using (2), count them,
two, 6C21s. I did not, however, get the plate supply with it - that went
to someone else, as I have no room for it. It's a single-band amp for
15M, but would easily convert to other bands. It's constructed
breadboard-style on a wooden base covered with an aluminum groundplane.
John was a real craftsman and engineer, and even homebrewed the
hypersil-core filament iron.
Someday I'll fire it up, but right now it's sitting on the top of a 6'
rack just sitting pretty and providing mood lighting for the shack!
73,
-Larry/NE1S
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