Matched Trio RCA 6FQ7 / 6CG7 Vacuum Tubes Valves

Matched Trio RCA 6FQ7 / 6CG7 Vacuum Tubes ValvesThis matched trio 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 71 while Tube Two measured 68 67. Tube Three measured 70 70 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

They tested (from left to right) as follows: 44

new in box Sylvania 6U8A (ECF82 / 6AX8 / 5KD8 / 6KD8) pentode/triode was tested on our Paul Hart-calibrated TV7/U for shorts

new in box Amperex mesh plate

Tube One measured 73/74 while Tube Two measured 78/75 where minimum (65%) is 50/50 and 100% is 77/77

They have dimpled

This lot of five Sylvania 25AV5GA tubes tested to spec on our Paul Hart-calibrated TV7/U

This new old stock-testing matched pair of RCA 6CG7 / 6FQ7 dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

There was some rumble on Side Four that I found annoying

These four milspec RCA large logo 12SG7 / VT-209 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

5 record cleaner and then played on my Rega Planar Three with an Ortofon X5-MC cartridge

This book is in very good condition

7 for Tube Two