Matched Pair RCA 6FQ7 / 6CG7 Vacuum Tubes NOS-Testing July 30 2023 OEM-BRANDED black glass 6K6GT tubes

OEM-BRANDED black glass 6K6GT tubes were tested on our Maxi-Matcher tube tester with 325 volts on the plates and a bias of -36 volts and tested as follows:

It has dual D getters

top to bottom) 39

They measured 55/56

new in box US-made number / type 89 tubes tested to spec on our Paul Hart-calibrated TV7/U

Matched Pair RCA 6FQ7 / 6CG7 Vacuum Tubes NOS-Testing July 30 2023 OEM-BRANDED black glass 6K6GT tubesThis new old stock TESTING matched pair of RCA 6FQ7 6CG7 dual triodes was tested on our TV7 U for shorts, gas and transconductance. There were no shorts or gas and their readings are as follows: Tube One measured 75 86 while Tube Two measured 79 79 where minimum (65%) is 50 50 and 100% is 77 77. These tubes have steel support rods; ladder plates and side D getters. I played them with adapters (not included) in my Radio Craftsmen RC 2 monoblocks and