Quote:
Originally Posted by wa2ise
Had about a hundred moving boxes to unpack, found stuff I'd forgotten I had, but couldn't seem to find the TV7DU mil spec tube tester I knew I did have. But today found it  in a box I had labeled "TV7DU", DUH! 
This tester is a Gm tester, which runs the tube in a circuit that somewhat simulates that in an actual TV, radio, or audio amp.
Some time ago I did find my emissions tube tester. That one does compactrons, though. An emissions tester just sees if the cathode can still emit the specified amount of electrons. Usually, that's good enough, as it's usually the cathode "running out of electrons" that causes tubes to go dead. |
From what I've read, those are really nice. I've tried bidding on them but they always ended up out of my range. It's always nice to find something like that, that you aren't sure where you stored it.
I have a Precision 10-12 that is "Electronamic." It doesn't measure Gm, but it does a dynamic test that similates actual use to some degree.
John