[snip]
: ... he had build an 807 amplifier.. ...and that it was
: clean of parasitics and later, it worked well on the
: amateur bands.
-
The 807 doesn't make a cost economical amplifier
tube when other candidates are a much better
bang for the buck. Not the case in the 50's/60's.
-
Still, the 807 is and incredibly plentiful tube
and the gazillion made during and post ww2
found themselves screaming for a fan in
home brew RF amps. I'm told "Radio Row"
prices were "two-bits" for two and even less.
-
I would suspect most any decent 807 HF amp
to be pretty much parasitic free. It's hard to get
them to preform very well in the higher portion
of the HF Spectrum.
-
I have a construction/project article from one of
the Ham Mags, circa 60's which has a pair of
807's in parallel for 80, 40 and I believe 20
meter bands. I built the article described amp
and thought it to be a real power house until
my Swan 350 arrived.
-
The input power of the dual 807 amp was a
scorching 230 watts. Whoa...! hold me back
from pulling it back off the shelf. I'd probably
have to dig out a pair of 807's... the project
amplifier's tube compliment made regular
round trips to the Heathkit WM2 mono block
for "Hi-Fi" operation.
-
cheers
skipp
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