[Boatanchors] 4-1000A coloration ?

[mac]

Indicates prolonged use but the tubes may still have some useful life  
left in them.  Scorching on the skirt below the plate structure is a  
bad sign though....

Dennis D.  W7QHO
Glendale, CA

********************

On Jan 2, 2012, at 11:01 AM, Paul Baldock wrote:

> I have just acquired three 4-1000A's. On each the inside of the glass
> has a yellow discoloration in places, it looks a little like varnish.
> Is this normal?
>
> Thanks
>
> - Paul
>
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