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  #1  
Old 06-28-2011, 09:44 AM
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TubeType TubeType is offline
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Common Technique

Early on, this technique was quite common. The 15GP22 is a perfect example. Just pop off the 20-pin plug and voila.
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Old 06-28-2011, 10:26 AM
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NewVista NewVista is offline
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Quote:
Originally Posted by TubeType View Post
.. The 15GP22 is a perfect example. Just pop off the 20-pin plug and voila.
Didn't know this, another source of trouble for a troubled tube.
Those who have good ones are indeed lucky.
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Old 06-29-2011, 10:49 PM
eberts eberts is offline
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you have a hairline crack in glass base

crack.JPG
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Old 06-30-2011, 07:25 AM
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The crack eberts points out is probably caused by the large glass/metal joint. The copper tube is probably joined to something like kovar which matched the CTE of glass better.

Making such a glass/metal seal probably isn't easy.

John
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Old 06-30-2011, 05:58 PM
old_coot88 old_coot88 is offline
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Somehow the title of this thread suggests a tubby, flatulent old gal who's into kinky body adornments.

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