Hi Rich,
-
Was a mental typo on my end. I actually meant the
filament sag. Thank you for pointing that out.
-
Amps members I talk with off the list report
reluctance to answer questions, a serious
increase in the noise floor and hate/spam
Email which follows various post threads.
I was actually thinking of the inbound "replies"
when I was typing up my answer to Dan's
question.
-
Many 811a amplifiers layouts have been made
through the years... Just thumbing through a
1977 ARRL Handbook and saw a dual 572b
amp on 160 which is a similar design.
-
cheers
skipp
[snip]
-
? The problem is not grid-sag, it is filament sag when the filament is
hot. The W-shaped filament sags no matter how it is oriented, but when
the W is vertical, the filament-to-grid spacing is not affected, so there
is no problem.
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