Matched Pair RCA 6FQ7 / 6CG7 Vacuum Tubes 1H4G Octal came from an excellent lot

came from an excellent lot and should work fine

firmly-cemented to their bases

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

These four US-made 6AB4 tubes tested to spec on our Paul Hart-calibrated TV7/U

000 VACUUM TUBES

Matched Pair RCA 6FQ7 / 6CG7 Vacuum Tubes 1H4G Octal came from an excellent lotThis 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