RCA 6SL7GT VT-229 Black Plate Tested 1400/1500 mhos gm No gas shorts grid emissions
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4 X 6SL7GT RCA TUBE. MATCHED QUAD. TESTED IN ROEHRENTEST TUBE TESTER.
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The Chinese 6N9P is a copy of the Russian 6H9C (6N9S) which in turn is a copy of the Western 6SL7. It has been tested on an AVO Mk3 tester and tests good. Even if a tube is new, I test it because occasionally a bad one makes it through.
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SYLVANIA JAN CHS 6SL7GT VT-229 Valve Tube Black rolled plates Dimple foil getter Code SC966A Date code A 4 January 1954 Hickok test = 1600/1650 New unused
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English Made 6SL7GT CV1985 Valve Tube. Grey Anodes, Rectangular Getter. This Valve =Ia 2.05/2.05 - Gm 1.5/1.5. Fully Tested on Avo VCM 163. Avo Guide = Ia 2.3 - Gm 1.6.
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6SL7GT CV1985 Valve Tube. BRIMAR Foreign, Made in USSR. Grey Plates, Dimpled Foil Getter.
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Reference tube is tested first then the tube listed for sale. Test procedure.
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BRIMAR England. 6SL7GT GREY PLATES HANGING O filament Hickok test 1600/1650 mhos gm
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