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"Boat Anchor" & Classic Equipment

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Testing 12AY7 tubes

Posted: 14 Mar 2017 10:05 PM 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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Drake TR-4 Refurb (slow first timer)

Posted: 14 Mar 2017 01:47 PM PDT
http://forums.qrz.com/index.php?thre...-timer.556293/

Ive been looking for some/an older rig to get in the shack for some time
now. I have an excellent setup with a modern rig that is a pleasure to
work with but want to get back to the roots of radio and have a radio that
glows in the dark when its running. With hamfest season coming up I
squirreled away some HDK money (honey dont know) and we headed up to the
local fest this past weekend for a look.



After finalizing a trade at the hamfest that was set up prior we started
looking through...



Drake TR-4 Refurb (slow first timer)