Two GE 6386 tubes. Tested on Amplitrex AT-1000 computerized tube tester (fixed bias mode). Very early production 6386 tubes. Etched 6386 numbers on glass. SPEC (100%) value for 6386 tube = 4000 gm and 9.6 mA plate current.
Item Tag: 6386
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Two GE 6386 Tubes /Amplitrex Tested +100%/D Get /x3 Mica /Black Plates 1958 Date
Two GE 6386 tubes. Tested on Amplitrex AT-1000 computerized tube tester (fixed bias mode). Etched 6386 numbers on glass. SPEC (100%) value for 6386 tube = 4000 gm and 9.6 mA plate current. PASS/FAIL grade for 6386 (65% of spec) = 2600 gm and 6.2 mA plate current.
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Two GE 6386 Tubes / Amplitrex Tested +100% / D Getter / X3 Mica /Black Plates
Tested on Amplitrex AT-1000 computerized tube tester (fixed bias mode). Two GE 6386 tubes. Etched 6386 numbers on glass. SPEC (100%) value for 6386 tube = 4000 gm and 9.6 mA plate current. PASS/FAIL grade for 6386 (65% of spec) = 2600 gm and 6.2 mA plate current.
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Two GE 6386 Tubes /Amplitrex Tested / D Getters / x3 Mica / Black Plates 1950’s
Two GE 6386 tubes. Tested on Amplitrex AT-1000 computerized tube tester (fixed bias mode). D getters / square getters / angle D getter. Etched 6386 numbers on glass. SPEC (100%) value for 6386 tube = 4000 gm and 9.6 mA plate current.