2 National Union NU Number / Type 78 #78 Vacuum Tubes Valves Shoulder ST-Shape Lot Of Two September 06 2024 Philco-BRANDED 14AF7 / XXD chrome

Philco-BRANDED 14AF7 / XXD chrome dome dual triode tested to spec on our Paul Hart-calibrated TV7/U

Transconductance measured 44/45 for Tube One and 45/45 for Tube Two where minimum (65%) is 25/25 and 100% is 38

This Arcturus type 76 triode was tested on our Paul Hart-calibrated TV7/U for shorts

It measured 55/51 where minimum (65%) is 40/40 and 100% is 62/62

This new old stock-testing matched pair of RCA 6BL7GTA dual triodes was tested on our TV7/U for shorts

2 National Union NU Number / Type 78 #78 Vacuum Tubes Valves Shoulder ST-Shape Lot Of Two September 06 2024 Philco-BRANDED 14AF7 / XXD chromeThis lot of two National Union number 78 tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and they measured as follows: 44 and 46 where minimum is (65%) is 36 and 100% is 55. 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