Matched Pair RCA Clear Top 12HG7 12BY7 Vacuum Tubes NOS-Testing Most Requested Sorry for those of you

Sorry for those of you who need two strong

new in box RCA 6EH5 tubes tested to spec on our Paul Hart-calibrated TV7/U

These four US-made belll-plate number / type 77 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

nostalgic-looking matched pair of GE 6P5G triodes was tested on our Paul Hart-calibrated TV7/U for shorts

5 milliamps' plate current and measured 2760 micromhos

Matched Pair RCA Clear Top 12HG7 12BY7 Vacuum Tubes NOS-Testing Most Requested Sorry for those of youThis 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.