RCA Radiotron 6N7 6N7G Vacuum Tube Shoulder ST Shape

RCA Radiotron 6N7 6N7G Vacuum Tube Shoulder ST ShapeThis RCA Radiotron 6N7G tube was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. It measured 59 57 where minimum (65%) is 38 38 and 100% is 58 58. It has anode radiators for cooler operation and longer tube life; an old fashioned "Coke" bottle; black plates and wire snubbers for increased rigidity for lowered microphonics. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE

NOR IS THERE A WAY TO DETERMINE WHETHER THEY MAY HAVE FATAL FLAWS

It is the tube on the left and is shown running with the RCA single that is also for sale separately

mesh plate tubes tested 21

They have 1-43 188-5 and 3-52 188-5 date/provenance codes

I can't tell you how it sounds as I never opened this CD

These six new old stock-testing

There is some cathode coating that has shed from the filaments

They measured 30/34 and 38/37 where minimum (65%) is 25/25 and 100% is 38/38

new in box Cunningham 14F7 tube tested to spec on our Paul Hart-calibrated TV7/U

This black plate Sylvania 5Y3G rectifier tube was tested on our Paul Hart-calibrated TV7/U for shorts

The dust jacket is in excellent condition

I am playing it in my Musical Paradise MP-301 with another