Matched Pair General Electric GE 6SN7 6SN7GTA Vacuum Tubes Copper Support Rods Скарлатти Fiocco 72 and 88 where minimum

72 and 88 where minimum (65%) is 33 and 100% is 50

These four milspec Sylvania 5Z4 rectifier tubes were tested on our Paul Hart-calibrated TV7/U for shorts

Tube One measured 45/38 while Tube Two measured 42/41 where minimum (65%) is 32/32 49/49

They measured 100/78 for Tube One and 102/80 for Tube Two

This perfectly-matched pair of GE 25L6GT tubes were tested on our Paul Hart-calibrated TV7/U for shorts

Matched Pair General Electric GE 6SN7 6SN7GTA Vacuum Tubes Copper Support Rods Скарлатти Fiocco 72 and 88 where minimumThis matched pair of GE 6SN7GTA dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 68 79 for Tube One and 79 72 for Tube Two where minimum (65%) is 50 50 and 100% is approximately 77 77. They have short bases; copper support rods, side horseshoe getters; excellent flashing and 4 22 188 5 and 2 17 188 5 date provenance codes, respectively. As I write, I