4 US-Made 7B7 Vacuum Tubes Lot Of Four Steven Curtis Tube One measured 1930 micromhos
$13.32
Description
Tube One measured 1930 micromhos
They measured 85/66 for Tube One and 85/70 for Tube Two where minimum (65%) is 57/57 and 100% is 88/88
perfectly-matched pair of GE 6SJ7s was tested on our Paul Hart-calibrated TV7/U for shorts
This matched quad of new old stock
new in box Sylvania 5BC3 tested to spec on our Paul Hart-calibrated TV7/U
4 US-Made 7B7 Vacuum Tubes Lot Of Four Steven Curtis Tube One measured 1930 micromhosThis lot of four US made 7B7 tubes was tested on our Paul Hart calibrated TV7 for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 41, 42, 44 and 47, respectively, where (65%) is 43 and 100% is 66. They have mica snubbers for increased vibration resistance and lowered microphonics and great flashing. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER
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