2 Philco 6U7 Vacuum Tubes Lot of Two 17C5 Septal Tube Two: 35

Tube Two: 35

61 and 66 where minimum (65%) is 45

Transconductance was 1900 for Tube One and 1800 for Tube Two where new/nominal is within one standard deviation of 1900

Tube One measured 31 while Tube Two measured 33 where minimum (65%) is 22

The performance is excellent and heart-felt

2 Philco 6U7 Vacuum Tubes Lot of Two 17C5 Septal Tube Two: 35These two Philco 6U7 tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. They tested (from left to right) as follows: 35 and 52 where minimum (65%) is 40 and 100% is 62. 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