Matched Pair RCA 6CG7 / 6FQ7 Vacuum Tubes Valves With Shields And Anode Radiators NOS-Testing February 06 2023 A 7 out of 10

A 7 out of 10

It measured an almost-perfectly-balanced 59/57 where minimum (65%) is 40/40 and 100% is 62/62

This trio of Toshiba output tubes was tested on our Maxi-Matcher in Real World Conditions with 400 volts on the plates and a bias of -36 volts for shorts

These three GE GE 5-Star industrial 6265 tubes tested to spec on our Paul Hart-calibrated TV7/U

hanging filaments

Matched Pair RCA 6CG7 / 6FQ7 Vacuum Tubes Valves With Shields And Anode Radiators NOS-Testing February 06 2023 A 7 out of 10This new old stock testing matched pair of RCA Hazy Top 6CG7 6FQ7 dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and transconductance measured as follows: Tube One: 72 78 Tube Two: 76 77 Bogey: Minimum (65%) is 50 50; 100% is 77 77 Physical Characteristics: Bases: N A Bottles: tall Date Codes: none EIA Factory Codes: none Getters: mid bottle, D Flashing Quality: excellent