Matched Pair RCA 1625 / VT-136 Vacuum Tubes Milspec NOS-Testing 6K6 Chrome Dome This National Union number 80

This National Union number 80 rectifier tube was tested on our Paul Hart-calibrated TV7/U for shorts

Both tubes measured 25 where minimum (65%) is 22

This matched pair of Sylvania-MANUFACTURED 6X5GT rectifier tubes was tested on our Paul Hart-calibrated TV7/U for shorts

new in box Ken-Rad 6R7 tube tested to spec on our Paul Hart-calibrated TV7/U

This new old stock-testing matched pair of Shuguang 6L6WGC output tubes was tested on our Maxi-Matcher 2 for shorts

Matched Pair RCA 1625 / VT-136 Vacuum Tubes Milspec NOS-Testing 6K6 Chrome Dome This National Union number 80This new old stock testing matched pair of RCA 1625 VT 136 output triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 67 for Tube One and 68 for Tube Two where minimum (65%) is 40 and 100% is 62. These tubes have excellent flashing; Micanol bases; H2E and K1E date codes, respectively; double D getters; US Army Signal Corps SC278A contract codes and two