Matched Pair Silvertone 6K7 6K7GT Vacuum Tubes NOS-Testing ECF80 T28 This Raytheon 12AZ7 dual triode

This Raytheon 12AZ7 dual triode was tested on our Paul Hart-calibrated TV7/U for shorts

Plate current draw was 52

These tubes have copious bottom flashing

This hardcover book is in very good shape

This album is excellent in all regards

Matched Pair Silvertone 6K7 6K7GT Vacuum Tubes NOS-Testing ECF80 T28 This Raytheon 12AZ7 dual triodeThis new old stock testing matched pair of Sylvania MANUFACTURED. Silvertone BRANDED 6K7GT tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas, Tube One measured 56 while Tube Two measured 57 were minimum (65%) is 36 and 100% is 55. 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