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I am not sure I understand all of this.
I am in no way knowledgeable about glass blowing and/or manufacture of CRT's...but SOMETHING seems amiss here with all of this. After all...at one time, not all that long ago...these 15GP/HP22 tubes WERE manufactured and /or rebuilt by RCA and others. Evidently, it was at least partially successful, as some of them still work, and at least often worked for at least 10 years or more after being built, before "giving up the (vacuum) ghost". And since they were made before...someone MUST still have the plans and/or machinery somewhere...or not???
So...what has happened to the 'original way of making these tubes"? Is it something like"there was only a couple of guys who knew how, and they took their secrets with them when they died long ago", or such??
Or...were these tubes GARBAGE from the beginning for RCA and did only one out of maybe 10 of them made actually work, for any length of time?
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03-19-2010, 06:55 PM
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