Matched Pair RCA 6FQ7 / 6CG7 Vacuum Tubes Valves 12W6GT Octal These five GE 1A7GT tubes

These five GE 1A7GT tubes tested to spec on our Paul Hart-calibrated TV-7/U

new in box (for Tube Two) matched pair of Sylvania 6BL7GTA dual triodes was tested on our TV7/U for shorts

This matched pair of Sylvania gray glass 7C5 tubes was tested on our Maxi-Matcher 2 with 400 volts on the plates and a bias of -36 volt for shorts

Tube One measured 54 while Tube Two also measured 54

Matched Pair RCA 6FQ7 / 6CG7 Vacuum Tubes Valves 12W6GT Octal These five GE 1A7GT tubesThis 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 63 67 while Tube Two measured 66 66 where minimum (65%) is 50 50 and 100% is 77 77. These tubes have steel support rods; ladder plates; side D getters and excellent flashing. As I write, I am playing them with adapters (not included) in my Radio Craftsmen RC 2