[Boatanchors] Smart People: Gassy Tubes Reversable?

[Bry Carling]

Dave
The purple glow is quite common in some power tubes like 6V6 or 6L6 etc. They often seem to work fine otherwise.

Bry Carling
http://af4k.com
Sent with my iPhone 6


> On Dec 3, 2013, at 8:18 AM, "David Stinson" <arc5 at ix.netcom.com> wrote:
> 
> 
> ----- Original Message ----- From: "Jim Wilhite" <w5jo at brightok.net>
> 
>> What are the symptoms you are seeing in those tubes?
> 
> Been doing some work with master oscillators.
> When used in a oscillator stage, gassy tubes "wander around"
> once they heat-up.  The more gas, the more they wander.
> I've had several tubes that show no gas response at all
> on a TV-7 but when installed in-circuit, they "take a walk."
> I believe it's gas because I have a couple of tubes with visible "blue glow" that show one extreme of the effect
> and non-gassy tubes that show the other extreme.
> 
> 73 DE Dave AB5S
> 
> 
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