A tube tester from the estate of a TV repairman. I have no tubes that are listed in the manual for this so I am unable to fully test. If there is something I can specifically measure with a volt meter, I would be happy to do so and report the results.
Espey 105 Dynamic Mutual Conductance WWII military tube tester, tested in partial working condition, compare my start price with the other Espey 105 testers posted. The meter needle will line up with the "Line Adj." mark and this will test tubes.
128 mode scan firmware for conventional Syntor X9000. If you are having trouble adding modes higher than 32 or 64 to your scan list, this will fix your problem. This firmware supports adding modes 1-128 to the fixed scan list and/or the operator select scan list.
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