Matched Pair RCA 6FQ7 / 6CG7 Vacuum Tubes 1H4G Octal This Sylvania milspec / industrial

This Sylvania milspec / industrial 5814 / 12AU7 / ECC82 dual triode was tested on our Paul Hart-calibrated TV7/U for shorts

This RCA 0A4G regulator tube tested to spec on our Paul Hart-calibrated TV7/U

This lot of two RCA 25Z5 tubes were tested on our Paul Hart-calibrated TV7/U for emissions

firmly-cemented to their bases

came from an excellent lot and should work fine

Matched Pair RCA 6FQ7 / 6CG7 Vacuum Tubes 1H4G Octal This Sylvania milspec / industrialThis 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 61 60 while Tube Two measured 63 65 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 Alan Eaton single ended