Matched Pair RCA 6FQ7 / 6CG7 Vacuum Tubes Valves March 16 2025 All four tubes' diodes tested

All four tubes' diodes tested fine as well

thick glass and micanol bases

It will need to be serviced

This GE 5-Star industrial 6SK7 / GL 6137 tube tested to spec on our Paul Hart-calibrated TV7/U

Matched Pair RCA 6FQ7 / 6CG7 Vacuum Tubes Valves March 16 2025 All four tubes' diodes testedThis 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 66 53 while Tube Two measured 67 57 where minimum (65%) is 50 50. 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 they sounded great even though they test