2 General Electric GE 12FX8 12FX8A Vacuum Tubes Valves NOS NIB Lot Of Two PMC 7007 Transconductance measured 57 for Tube

Transconductance measured 57 for Tube One and 65 for Tube Two where minimum (65%) is 36 and 100% is 55

Transconductance was 1890 for Tube One and 2000 for Tube Two where new/nominal is within one standard deviation of 1900

These tubes have copper support rods

6 volts on the filaments

2 General Electric GE 12FX8 12FX8A Vacuum Tubes Valves NOS NIB Lot Of Two PMC 7007 Transconductance measured 57 for TubeThese two new old stock, new in box GE 12FX8A tubes tested to spec on our Paul Hart calibrated TV7 U. 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 QUESTIONS. 1. MOST FORMS OF SHIPPING EXCEPT MEDIA MAIL ARE AUTOMATICALLY INSURED UP TO $100. ETSY PURCHASE PROTECTION COVERS ITEMS UP TO