4 US-Made 3GK5 Vacuum Tubes Valves NOS NIB Lot Of Four Eightynine Transconductance measured 56/56 for Tube

Transconductance measured 56/56 for Tube One and 58/58 for Tube Two where minimum (65%) is 25/25 and 100% is 38

I do not have the ability to test them and they are being sold as-is with no returns

Tubes Three and Four measured 1100 and 1150

52 and 60 where minimum (65%) is 36 and 100% is 55

4 US-Made 3GK5 Vacuum Tubes Valves NOS NIB Lot Of Four Eightynine Transconductance measured 56/56 for TubeThese four new old stock, new in box US made 3GK5 tubes tested to spec on our Paul Hart calibrated TV7 U. IN 2021 WE PURCHASED 150,000 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 QUESTIONS. 1. MOST OF THE TUBES WE SELL ARE OVER 70 YEARS OLD. WE CANNOT GUARANTEE FOR FAILURES AFTER POWER UP AS THERE IS NO WAY TO