Matched Pair General Electric GE 6K6 6K6GT Vacuum Tubes Black Glass North Carolina Press black T plates

black T plates

The title says it all

12AT7s are notorious for their unmatched triodes and their deviation from nominal parameters

Plate current draw was 37

This Tung-Sol 9BR7 tube tested to spec on our Paul Hart-calibrated TV7/U

Matched Pair General Electric GE 6K6 6K6GT Vacuum Tubes Black Glass North Carolina Press black T platesThis 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 1570 micromhos, 19. 6 milliamps' plate current. Tube Two measured 1650 20. 2. New nominal is within one standard deviation of 1900. These tubes have copper support rods; rectangular mica spacers; black and silver bottles and 2 04