This may be a good replacement for my 1977 EICO model 635, an even simpler emission tester. It was great to pass-fail batches of tubes so I did not keep the truly bad ones around. I wore out both 9-pin and compactron sockets on it. I also fried its power transformer trying to "rejuvenate" beam-power tubes by crankin the filament voltage up
I am looking for a good tester to complement my Weston 798, dated 1948. Its a decent mutual conductance tester for anything up to that date.
It seems like there are only a few choices from Hickok or B&K for testing mutual conductance on newer tubes.
None of the shops I worked had a good tester and relied upon the set, assuming a replacement tube was handy.
I started testing tubes at RS, it was a good way to kill time while the folks were shopping. I few other places had testers in the mid 70s but RS had a less abused one.
Tim- want a Heathkit TC-1? You can get started on tube stuff next week
