Time to get this site upgraded, so we are passing the hat around. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html
We appreciate your help
in keeping this site going.
"Cathode conductance" on the front panel: Yep, its an emissions tester. Still good for checking for shorts and seeing if used tubes have life left in them.
Threaded Mode