I have 2, 2Bs and SN 12xx has a 6BN8 but chassis is stamped 8BN8 and SN 86XX
that has a Sylvania 8BN8.
Neither radio has been on in years but may be in the next year or so....
Just a wild guess, just maybe Drake got a real good deal on 8BN8s?
A serious overrun of series string TV tubes could have been a deal too good
to pass up?
Heathkit used to use surplus in their stuff and maybe Drake got a Heathkit
designer!
Just in case I don't get around to it, has anyone measured a difference
while using a 6BN8 instead?
tnx
hank wd5jfr

"Edmund H. Ramm" wrote in message
...

Can anyone please enlighten me as to why there is an 8BN8 heated
by only 6.3 instead of 8.4v, i.e. underheated by 25%, used in R2B?

What forced the designers to accept cathode poisoning instead of
using a 6BN8 valve?

73, Eddi ._._.
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