Radio Shack Realistic Lifetime Gold Pin 5879 Vacuum Tube NOS-Testing Rectifiers

Radio Shack Realistic Lifetime Gold Pin 5879 Vacuum Tube NOS-Testing RectifiersThis new old stock testing US made Radio Shack Realistic Lifetime Gold Pin 5879 tube was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. It measured 40 where minimum (65%) is 25 and 100% is 35. This tube has top, O getters; steel support rods; gold pins and outstanding flashing. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER

Tube Two (diodes): 60/42

Tube Two measured 1750/23

Listening report to follow

This matched pair of RCA 12SL7GT dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

Plate current draw was 52

not included) in my AC-heated Alan Eaton single-ended 45 amplifier and they sound OK

48 and 55 where minimum (65%) is 36 and 100% is 55

new in box National Union 12BA7 tube tested to spec on our Paul Hart-calibrated TV7/U

They have G 3R and W 4R date codes

This is a sold

These five US-made

new in box GE 6SB7 / 6SB7Y tube tested to spec on our Paul Hart-calibrated TV7/U