04-29-2019, 09:51 AM
For grins and giggles, I installed the tubes (except the 80) and powered up using a variac to check filament voltages. At slightly lower than line voltage, I measure 2.52 volts on the 24's and 27, 2.7 on the 42, and 5.5 on the 80 without the tube. I'm good!