Matched Pair General Electric GE 6K6 6K6GT Vacuum Tubes Black Glass NOS-Testing Majel Barrett Tube One measured 1940 micromhos

Tube One measured 1940 micromhos

Two have MISSING CENTERING PINS

new in box RCA 5Z4 -- and another just like it -- tested to spec on on our Paul Hart-calibrated TV7/U

C Grafica s

Matched Pair General Electric GE 6K6 6K6GT Vacuum Tubes Black Glass NOS-Testing Majel Barrett Tube One measured 1940 micromhosThis new old stock TESTING matched pair of GE 6K6 6K6GT tubes was tested on our Maxi Matcher 2 with 325 volts on the plates and a bias of 36 volts for shorts, gas, plate current and transconductance. There were no shorts or gas. Tube One measured 2200 micromhos, 34. 5 milliamps' plate current. Tube Two measured 2040 36. 1. New nominal is within one standard deviation of 1900. These tubes have copper support rods; rectangular mica spacers; black and