Does anybody have a link to a scan of an old data sheet for the 811 (NOT
811A) tube? All I seem to find are 811A spec's. I have the two line
blub on the older 811 in an old ARRL HB, but I'd like to get the
complete spec sheet. This tube existed in the gap between the TT3 and
TT4 tube manuals so I can't find it.