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( 4 ) 6B4GPower AmplifierTriodes
All of my select tubes have been checked on my Hickok 539C Tube Tester forshorts , tight basesand tranconductance ( Gµ );
The following is an explanation of my color code.
Red = Tube Number and Type Blue = Manufacturer
Black = Date Code or Comment Green = Transconductance ( Gµ )
6B4GPower AmplifierTriodes1900 / 1900 Minimum Gµ
1.Sylvania609 3500Black Ladder Plates D-Getter
2.Sylvania609 3525Black Ladder Plates D-Getter
3.Sylvania609 3275Black Ladder Plates D-Getter
4.Sylvania609 3375Black Ladder Plates D-Getter
** ALL ITEMSARE SOLD \"AS IS\".NORETURNS! I will list any flaws or defects I find, but as all are vintage, there may be some scratches or rubs, normal aging or handling that I may missin the description-look closely and enlarge the photographs.Please ask specific questions if I don\'t give enough details, I will be happy toanswer any questions.I will pack the items carefully and securely.
*I can combine shipments for multiple purchases.The winning buyer to pay shipping costs.
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