04-02-2013, 09:14 PM
Yes, the 25K resistor is there (it's the only part still physically attached to the detector/power filter box..
).
I have added the schematic. As this packet of information is directly from Grigsby-Grunow, I am tending toward trusting their voltage numbers. That detector tube is biased at -21V, so almost cut off (practically running class C?), so the plate current will be quite low.
I found a Stancor A83 at PTOP, which should work pretty well in this radio (and am I ever glad.. it wasn't looking too good for a while there..)
). I have added the schematic. As this packet of information is directly from Grigsby-Grunow, I am tending toward trusting their voltage numbers. That detector tube is biased at -21V, so almost cut off (practically running class C?), so the plate current will be quite low.
I found a Stancor A83 at PTOP, which should work pretty well in this radio (and am I ever glad.. it wasn't looking too good for a while there..)
