07-12-2023, 08:14 AM
MrFixr55 Wrote:... I got it out of RC12, and a Tung Sol spec sheet (and they have different specs.
Do you remember which Tung-Sol sheet you used? I have a couple of their tube books and it would be enlightening to see what the 42 numbers look like which you compared with RC-12.
MrFixr55 Wrote:RCA wanted everyone to think that they invented every tube
RCA wanted everyone to think that they invented everything including the electron.
MrFixr55 Wrote:It seems to me that in the 650, the tubes are" cathode biased".
I don't see any cathode bias resistors..
Dale H. Cook, GR/HP/Tek Collector, Roanoke/Lynchburg, VA
https://plymouthcolony.net/starcity/radios/