4 Philco Number Type 27 #27 Vacuum Tubes Stamped / Engraved Bases Lot Of Four Makin' Love milspec Sylvania GB-6X4WA was tested

milspec Sylvania GB-6X4WA was tested on our Paul Hart-calibrated TV7/U for shorts

It measured 69/65 where minimum (65%) is 50/50 and 100% is 77/77

This new old stock-testing matched pair of RCA 6CG7 / 6FQ7 dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

Transconductance measured 52 for Tube One and 56 for Tube Two where minimum (65%) is 30 and 100% is 46

4 Philco Number Type 27 #27 Vacuum Tubes Stamped / Engraved Bases Lot Of Four Makin' Love milspec Sylvania GB-6X4WA was testedThese four Philco engraved base number type 27 tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas; and they measured as follows: 40, 41, 42 and 44 where minimum (65%) is 25 and 100% is 38. 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