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Old March 25th 17, 03:10 PM posted to rec.radio.amateur.moderated,rec.radio.amateur.boatanchors
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Default QRZ Forums - "Boat Anchor" & Classic Equipment for Saturday 25 March 2017

"Boat Anchor" & Classic Equipment

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Testing 12AY7 tubes

Posted: 25 Mar 2017 06:06 AM PDT
http://forums.qrz.com/index.php?thre...-tubes.559162/

I recently came into a box of 12Ay7 (GE JG-6072) tubes. I have no need for
26 of them, so I was going to keep a few for projects and sell the rest to
buy more radio toys.



I tested them on my Mecury 1000 tester, and they ALL come in around 850
mhos. I read that the 12AY7 has a gain of around 45% of a 12AX7. The book
says that a 12AX7 should read 1800, so 45% of 1800 is around 810.



Am I incorrect in believing the 12AY7 has good strong output if it only
reads 850 on my tester? I want to...



Testing 12AY7 tubes


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