Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods Fawcett Columbine TV7/U readings are in (parenthesis)

TV7/U readings are in (parenthesis)

Tube Two measured 16

The title basically says it all

but the bottle

Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods Fawcett Columbine TV7/U readings are in (parenthesis)This matched pair of GE 6SN7GTB dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and transconductance measured as follows: Tube One: 75 70 Tube Two: 79 74 Bogey: Minimum (65%) is 50 50; 100% is 77 77 Physical Characteristics: Bases: tall Bottles: medium height Date Codes: 56 13 and 58 43, respectively EIA Factory Codes: 188 4 and 188 5, respectively Getters: mid bottle, harp