[Boatanchors] Smart People: Gassy Tubes Reversable?

[Jim Wilhite]

By operating a tube at rated voltages, in most occasions, the getter will 
absorb the gas that has escaped in old tubes after a period of time.  But 
you have to keep it operating for quite a while to accomplish that goal. 
That may be a problem in an oscillator if you are in a hurry to get it 
going.  First run the filament for several hours then apply the plate, 
screen and bias voltages that are required and watch the tube.

If the glow between elements disappears, it should perform.

Jim
W5JO

----- Original Message ----- 

>
>> Which are we talking abount.
>
> Thanks for writing, Al.
> I am familiar with the two "blues" you mention.
> The issue I'm addressing is definitely gas.
> 73 Dave S.
>