12-15-2013, 10:54 PM
OK, thanks for the advice. I do have some other 80 tubes around here but they are the ST type not the globe type as the gassy one is. I was hoping to use the globe type but sounds like it's best not to use gassy tubes.
I am doing a side experiment where I'm running the gassy tube on a lab power supply on about half filament voltage. I'll let it go several days and then check to see if the blue glow is still there when it's in the radio.
Don't know if you're supposed to run plate current for this fix or not. Will start with just half filament current for now.
Herb
I am doing a side experiment where I'm running the gassy tube on a lab power supply on about half filament voltage. I'll let it go several days and then check to see if the blue glow is still there when it's in the radio.
Don't know if you're supposed to run plate current for this fix or not. Will start with just half filament current for now.
Herb