Matched Pair General Electric GE 12SN7 12SN7GT Vacuum Tubes Copper Support Rods 6C4 Triode Drawer These four RCA and Cunningham

These four RCA and Cunningham number / type 27 tubes tested as low goodand good on our Paul Hart-calibrated TV7/U

and if it is

6 milliamps/2150 micromhos and 18

thick glass and micanol bases

EIA Factory Codes: none

Matched Pair General Electric GE 12SN7 12SN7GT Vacuum Tubes Copper Support Rods 6C4 Triode Drawer These four RCA and CunninghamThis matched pair of General Electric GE 12SN7 12SN7GT dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 63 65 and Tube Two measured 66 64 where minimum (65%) is 50 50. Both tubes have gray, ladder plates; side horseshoe getters; crenelated, gapped, top mica spacers with smooth sided rectangular bottom mica spacers; copper support rods and great flashing. They