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#1
12-17-2012, 07:36 PM
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21MP4 CRT needed
Who was it that had NOS or rebuilt CRT's for sale? I have a fellow collector who is in need of a 21MP4 or equivalency.
He had a long list of available tubes. Thanks folks!!
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julian 
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#2
12-17-2012, 07:40 PM
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Bobhas these for sale; don't know if any of them will sub for the tube you are looking for.
Oops, for some reason that link does not take you to the page; go to the FOR SALE menu on the left, the CRTs http://antiquetvguy.com/Frameset%20P...FrameSet1.html
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John Folsom
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#3
12-18-2012, 09:09 AM
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It's a metal cone crt. No sub for it.
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Vacuum tubes are used in Wisconsin to help heat your house. New Web Site under developement ME http://AntiqueTvGuy.com
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#4
12-18-2012, 09:33 AM
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Quote:
The 21MP4 is an electrostatic focusing tube. It can be subbed by a 21AP4, but you have to use a magnetic focusing unit. I depends on what make of set it is. I've converted a few other makes. 
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#5
12-18-2012, 06:29 PM
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I've got a NOS Continental Electronics 21MP4 in storage that I could make available. I can probably get to it over the coming weekend and test it. Shipping always concerns me when dealing with CRTs though. I'll send you a PM.
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Tim
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#6
12-28-2012, 12:22 PM
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Julian:
I received a message that your PM box is full and not accepting any new messages. I used the e-mail option here but not sure if you received it. Send me a PM if still interested. Regards,
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Tim
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