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Old 03-03-2016, 09:02 PM
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benman94 benman94 is offline
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WTB: Good 'Birdcage' 5Z4 Tubes

I'm looking for at least four good testing examples of the early 'birdcage' 5Z4 tube. They need not be in good shape cosmetically, only functioning electrically.
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Old 03-04-2016, 12:12 PM
dieseljeep dieseljeep is online now
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Quote:
Originally Posted by benman94 View Post
I'm looking for at least four good testing examples of the early 'birdcage' 5Z4 tube. They need not be in good shape cosmetically, only functioning electrically.
I understand that, they were responsible for taking out a lot of power transformers. Many were changed before they went bad, just as general practice.
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Old 03-04-2016, 03:54 PM
Olorin67 Olorin67 is offline
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good luck, I've never seen one (working or not) and I've been looking for tubes at hamfests since the days when you could buy a bushel basket of old tubes for a dollar.(mid 80s), Any similar looking tubes I've seen turned out to be ballasts.
I do have a radio that probably had one originally, it still had other early metal tubes, like square cornered 6H6 with stamped in markings.

Last edited by Olorin67; 03-04-2016 at 04:05 PM.
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Old 03-05-2016, 04:17 PM
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jaymanaa jaymanaa is offline
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Is this what you need?
http://www.radiomuseum.org/tubes/tube_5z4.html
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Old 03-05-2016, 04:28 PM
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benman94 benman94 is offline
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This is the type I'm really looking for, though I'm always looking for the later metal type as well.
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File Type: jpg 5Z4cage-rca35--02_7jE.jpg (13.2 KB, 12 views)
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