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Old June 29th 08, 04:11 PM posted to rec.antiques.radio+phono,rec.radio.amateur.boatanchors
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Default A gallery of gassy tubes

HiTech RedNeck wrote:
With there now being a spot of getter metal on the glass in the vicinity of
the getter loop, I'd think that applying intense RF energy to the area would
also heat that spot (the way silvered or gilded patterns on a china plate,
or even more dramatically the coating on a CD, heat up and spark in a
microwave oven). Assuming this heat was enough to re-vaporize part of the
spot, and the glass didn't break from the thermal shock, I'd wonder if the
vaporized metal might capture enough extra air in a slowly leaking tube to
make a difference for a short time.


Remember, it's a reactive metal. When it's worn out, it's worn out because
it's oxidized. Reheating it won't do any good; you have to get the oxygen
out of the tube. At best, reheating will boil off the oxygen and fill the
tube back up with it.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
 
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