--- Im TekScopes@e..., msfix56@y... schrieb:
cause of the drift. This does seem to be the case. In an attempt towhich
if you watch the tube test meter drifts up from about 3000 uMhos toHave you tried to clean the connector pins of the Nuv?
Maybe the heater has a bad contact that could make unstable and
The other tubes inThe 8393 is exactly equal to a 7586 exept the heater voltage (13.5V)