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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: RE: thoriated tungsten posted by RayP on December 13, 2024 at 12:16:32:
Hey Ray
The tube is a GU-4 transmitting triode made in Russia for the military.
It has a standard 4 pin base but only has 3 pins.
I have never seen one before I ran across it purly by accident on ebay.
Cal
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