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2 Vintage Sylvania 12SL7 GT Stereo Tubes Tested on a Hickok 6000A Micromhos NOS = 1000/1000 Min = 600/600 Reading = 1200/1100 1200/1120 USA Shipping $6 I have many other types of tubes ~ No Additional Shipping Charges All tubes Guaranteed 507

Vintage Tung Sol 12SL7 VT-289 Vacuum Tube Bogey++~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Tested on an enhanced Triplet E3444 Laboratory Tester prepared by Paul Hart of Roswell, GA Industry Bogey transconductance =1600|1600µmhos Industry Bogey plate current = 2.3|2.3mA Results = 1700/1775µmhos ~ 2.5|2.6mA The measurements in this listing were taken on a Triplett 3444 modified to test the tube as an amplifier in accordance with RMA/EIA specifications, utilized by all US and most foreign tube manufacturers. This tester applies test conditions for this tube (including the precise filament voltage) and then measures transconductance (gm) in accordance with the engineering definition of gm. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. A tube must be tested in this manner to compare its test results with the manufacturer’s original intent or with other tubes of the same type. Most tube testers do not apply the test conditions required or conduct a valid gm test. For more details on the test and our test equipment, please contact us. ************************************************************************ USA Shipping $6 ~ Higher Overseas I have many other types of tubes ~ Just Search MY store No Additional Shipping Charges *** All tubes Guaranteed ?????? Thank You! ?????? ~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirls Guaranteed VintageTubes ov9

GE 12SL7 GT Stereo Tube Tested on Hickok 6000A Min = 1000/1000 2100/1900 USA Shipping $6 ~ Higher Overseas I have many other types of tubes ~ Just Search MY store No Additional Shipping Charges *** 128~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirls Guaranteed VintageTubes

Sylvania 12SL7 Stereo Tube Tested on a Hickok 6000A Micromhos Nominal NOS = 1000/1000 Min = 600/600 Results = 1120/1025 I have many other types of tubes Please search my store. No Additional Shipping Charges Thank you. Unlimited Combined Usa Shipping $6 ?????? Thank You! ?????? 101 ~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirls Guaranteed VintageTubes

General Electric 12SL7 Vacuum Tube NOS GE

Vintage Tung Sol 12SL7 VT-289 Vacuum Tube Bogey++~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Tested on an enhanced Triplet E3444 Laboratory Tester prepared by Paul Hart of Roswell, GA Industry Bogey transconductance =1600|1600µmhos Industry Bogey plate current = 2.3|2.3mA Results = 1800/1700µmhos ~ 2.7|2.5mA The measurements in this listing were taken on a Triplett 3444 modified to test the tube as an amplifier in accordance with RMA/EIA specifications, utilized by all US and most foreign tube manufacturers. This tester applies test conditions for this tube (including the precise filament voltage) and then measures transconductance (gm) in accordance with the engineering definition of gm. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. A tube must be tested in this manner to compare its test results with the manufacturer’s original intent or with other tubes of the same type. Most tube testers do not apply the test conditions required or conduct a valid gm test. For more details on the test and our test equipment, please contact us. ************************************************************************ USA Shipping $6 ~ Higher Overseas I have many other types of tubes ~ Just Search MY store No Additional Shipping Charges *** All tubes Guaranteed ?????? Thank You! ?????? ~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirls Guaranteed VintageTubes ov5

GE 12SL7 GT Stereo Tube Tested on Hickok 6000A Min = 1000/1000 2100/1900 USA Shipping $6 ~ Higher Overseas I have many other types of tubes ~ Just Search MY store No Additional Shipping Charges *** 128~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirls Guaranteed VintageTubes

Matched Pair JAN CHS 12SL7 VT-289 Vacuum Tubes Bogey + ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^Tested on an enhanced Triplet E3444 Laboratory Tester prepared by Paul Hart of Roswell, GA Industry Bogey transconductance =1600|1600µmhos Industry Bogey plate current =2.3|2.3mA Results =1735|1795µmhos ~2.5|2.8mA =1900|1865µmhos ~ 2.6|2.5mA________________________________________________________________________________________The measurements in this listing were taken on a Triplett 3444 modified to test the tube as an amplifier in accordance with RMA/EIA specifications, utilized by all US and most foreign tube manufacturers. This tester applies test conditions for this tube (including the precise filament voltage) and then measures transconductance (gm) in accordance with the engineering definition of gm. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. A tube must be tested in this manner to compare its test results with the manufacturer’s original intent or with other tubes of the same type. Most tube testers do not apply the test conditions required or conduct a valid gm test. For more details on the test and our test equipment, please contact us. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ USA Shipping $6I have many other types of tubes ~ No Additional Shipping ChargesAll tubes GuaranteedThank you ~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirls Guaranteed VintageTubes37

Vintage Tung Sol 12SL7 VT-289 Vacuum Tube Bogey++~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Tested on an enhanced Triplet E3444 Laboratory Tester prepared by Paul Hart of Roswell, GA Industry Bogey transconductance =1600|1600µmhos Industry Bogey plate current = 2.3|2.3mA Results = 1700/1775µmhos ~ 2.5|2.6mA The measurements in this listing were taken on a Triplett 3444 modified to test the tube as an amplifier in accordance with RMA/EIA specifications, utilized by all US and most foreign tube manufacturers. This tester applies test conditions for this tube (including the precise filament voltage) and then measures transconductance (gm) in accordance with the engineering definition of gm. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. A tube must be tested in this manner to compare its test results with the manufacturer’s original intent or with other tubes of the same type. Most tube testers do not apply the test conditions required or conduct a valid gm test. For more details on the test and our test equipment, please contact us. ************************************************************************ USA Shipping $6 ~ Higher Overseas I have many other types of tubes ~ Just Search MY store No Additional Shipping Charges *** All tubes Guaranteed ?????? Thank You! ?????? ~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirls Guaranteed VintageTubes ov9

One audio - guitar - amplifier - HAM - radio - TV tube, type 12SL7 GT.The tube is n. o. s. in the box, GE brand.Tests good on the Heath IT-17 tube tester.While youre here, please have a look at my other listings ! Payment: Pay-Pal is preferred. I will accept a check from USA. Kindly make your payment within 4 business days. Shipping & handling: the cost listed is the EBAY calculated price to ship via USPS from 08822 to continental US. If you are elsewhere, require tracking, need insurance, or prefer other shipping arrangements, please contact me. Shipping can often be combined for multiple purchases. No charge for packing with care! Please verify that your shipping address is correct and valid.