NEC 6SN7 6SN7GTB Vacuum Tube NOS-Testing Leo Sayer new in box matched pair
$12.88
Description
new in box matched pair of Ken-Rad JAN-CKR-2C22 / 7193 milspec triodes was tested on our Paul Hart-calibrated TV7/U for shorts
3 milliamps while Tube Two’s was 28
9 milliamps and transconductance was 2050 micromhos for Tube One
terrific flashing and L2E date codes
NEC 6SN7 6SN7GTB Vacuum Tube NOS-Testing Leo Sayer new in box matched pairThis new old stock testing NEC MANUFACTURED, Channel Master LABELED 6SN7GTB was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured a perfectly balanced 81 81 where minimum (65%) is 50 50 and 100% is 77 77. This tube was made in Japan for Channel Master in the early to mid late 1970s and has copper support rods; a short base; a tall bottle; gray plates; a top D getter
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