Matched Pair RCA 1625 / VT-136 Vacuum Tubes Milspec NOS-Testing Мелодия Melodiya LP 42/61 (sic)

42/61 (sic)

The spine is in fine shape with no loose pages and the dust jacket has only very-minor nicks and tears

Transconductance measured 60/79

ITEMS ARE GUARANTEED AS-DESCRIBED ON SHIPMENT

It measured 54/66 where minimum (65%) is 50/50

Matched Pair RCA 1625 / VT-136 Vacuum Tubes Milspec NOS-Testing Мелодия Melodiya LP 42/61 (sic)This 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 62 for Tube One and 63 for Tube Two where minimum (65%) is 40 and 100% is 62. These tubes have excellent flashing; Micanol bases; double D getters; US Army Signal Corps SC278A contract codes and two additional support rods per tube for