Matched Pair RCA 1625 / VT-136 Vacuum Tubes Milspec NOS-Testing Franz Andre new in box milspec RCA

new in box milspec RCA 3Q4 / JAN3Q4 tube tested to spec on our Paul Hart-calibrated TV7/U

These six US-made 84 / 6Z4 rectifier tubes were tested on our Paul Hart-calibrated TV7/U for shorts

58 and 67 where minimum (65%) is 48

excellent flashing and a dimpled-sheet getter

34/38 and 38/36 where minimum (65%) is 25/25 is 39/39

Matched Pair RCA 1625 / VT-136 Vacuum Tubes Milspec NOS-Testing Franz Andre new in box milspec RCAThis 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