5 US-Made 14B6 Vacuum Tubes Valves Lot Of Five Compactron T41 new in box Sylvania 12HG7

new in box Sylvania 12HG7 / 12GN7 / 12GN7A tubes tested to spec on our Paul Hart-calibrated TV7/U

winged plates with one rectangular hole per plate

This new old stock-testing National Union globe / balloon-style bottle number 36 tube tested 42 on our Paul Hart-calibrated TV7/U where minimum (65%) is 26 and 100% is 40

It measured 22 where minimum (65%) is 26 and 100% is 40

5 US-Made 14B6 Vacuum Tubes Valves Lot Of Five Compactron T41 new in box Sylvania 12HG7This lot of three US made 14B6 was tested on our Paul Hart calibrated TV7 U for shorts, gas, emissions and transconductance. There were no shorts or gas and they tested as follows: Tube one measured 25 in its triode section where minimum (65%) is 27 and 100% is 43. Its diodes measured 54 and 42, respectively, where minimum (65%) is 40 40 and 100% is 61 61. Tube Two (triode): 32 Tube Two (diodes): 56 46 Tube Three (triode): 34 Tube Three (diodes): 56