Matched Pair General Electric GE 12BH7 12BH7A Vacuum Tubes Valves 12AU7 Substitute For Tube Rolling NOS-Testing 3AW2A Compactron This new old stock-TESTING matched

This new old stock-TESTING matched pair of engraved base RCA Cunningham Radiotron number / type 30 tubes tested 34 and 36

It was made in America

Its plate current draw was 23

anode radiators for cooler operation and longer tube life

It was made in Japan

Matched Pair General Electric GE 12BH7 12BH7A Vacuum Tubes Valves 12AU7 Substitute For Tube Rolling NOS-Testing 3AW2A Compactron This new old stock-TESTING matchedThis new old stock testing matched pair of GE 12BH7A dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 67 66 while Tube Two measured 70 68 where minimum (65%) is 30 30. These tubes have gray plates; copper support rods; excellent flashing; top harp lyre getters and black anode radiators for improved cooling and longer tube life. WE HAVE SCORES OF THOUSANDS OF