Matched Pair Tung-Sol 6K6 6K6GT Black Bottles Vacuum Tubes NOS-Testing 0A4G Regulator These tubes have anode radiators

These tubes have anode radiators for cooler operation and longer tube life

This matched pair of RCA 6N7 dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

37 and 44 where minimum (65%) is 25

One is Wards -branded and the other is Zenith

This LP was originally owned by R

Matched Pair Tung-Sol 6K6 6K6GT Black Bottles Vacuum Tubes NOS-Testing 0A4G Regulator These tubes have anode radiatorsThis new old stock TESTING matched pair of Tung Sol 6K6GT tubes was tested on our Maxi Matcher 400 volts on the plates and a bias of 36 volts for shorts, gas and transconductance. There were no shorts or gas. Tube One drew 31. 8 milliamps' plate current and measured 2060 micromhos. Tube Two measured 32. 5 2140. New nominal is within one standard deviation of 1900. These tubes have pretty black bottles that entirely cover the top half of the tubes;