Matched Pair RCA Clear Top 12HG7 12BY7 Vacuum Tubes Valves NOS-Testing Matched Pair 11BM8 Tube One drew 14

Tube One drew 14

7 milliamps and transconductance was 1510 micromhos for Tube One

mica snubbers for increased rigidity and lowered microphonics and excellent flashing

oiled and keeping very good time

new in box RCA 6LN8 / LCf80 tubes tested to spec on our Paul Hart-calibrated TV7/U

Matched Pair RCA Clear Top 12HG7 12BY7 Vacuum Tubes Valves NOS-Testing Matched Pair 11BM8 Tube One drew 14This new old stock testing matched pair of RCA clear top 12HG7 tubes was tested on our Paul Hart calibrated TV7 U (on the 12BY7 setting) for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 80 while Tube Two measured 82 where minimum (65%) is 46 and 100% is 71. These tubes have anode radiators for cooler operation and longer tube life; side O getters and excellent flashing. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES.