6 US-Made 6S4 6S4A Vacuum Tubes Lot Of Six You Got To Pay Transconductance measured 22 where minimum

Transconductance measured 22 where minimum (65%) is 15

D getters and outstanding flashing

These three GE 6EU8 tubes tested to spec on our Paul Hart-calibrated TV7/U

Tube One measured 72/74 while Tube Two (Zenith-LABELED) measured 74/73 where minimum (65%) is 50/50 and 100% is 77/77

6 US-Made 6S4 6S4A Vacuum Tubes Lot Of Six You Got To Pay Transconductance measured 22 where minimumThese six US made 6S4A tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and they measure as follows: 40, 51, 64, 66, 74 and 80 where minimum (65%) is 52 and 100% is 80. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY