Matched Pair RCA 6K6 6K6GT Vacuum Tubes Valves Gray Bottle July 04 2024 These three Sylvania 7J7s tested

These three Sylvania 7J7s tested to spec on our Paul Hart-calibrated TV7/U

This lot of GE black plate 6CL6 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

venting millenarian fury and precipitating mass arrests

This new old stock-testing RCA clear top

Matched Pair RCA 6K6 6K6GT Vacuum Tubes Valves Gray Bottle July 04 2024 These three Sylvania 7J7s testedThis matched pair of RCA 6K6GT tubes was tested on our Maxi Matcher tube tester with 325 volts on the plates and a bias of 36 volts. Tube One drew 19. 1 milliamps' plate current while Tube Two drew 19. 4. Transconductance was 1530 for Tube One and 1430 for Tube Two where new nominal is within one standard deviation of 1900. These tubes have tall bases; 952 and 0 39 date codes; gray bottles and bottom, D getters. As I write, I am playing them in my