These tubes test 86/86 and 88/88 where a new tube tests 85/85.
Item Tag: SYLVANIA
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(2) Sylvania 6SN7GT Chrome Dome 3 Hole Black Plate Matched Codes 1953 Strong
Tube 1 Emissions 82% & 90% | GM 107% & 107%. Tube 2 Emissions 81% & 81% | GM 100% & 103%.
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Sylvania JAN 6SN7WGTA Black Plate NOS matching date pair Tested USA
These are 6SN7WGTA tubes which are the ruggedized version of the 6SN7GTA. They can be used in applications calling for the 6SN7GT and 6SN7GTA. Firm bases, excellent silvering. Tubes are matched for dynamic gain and structure-test at 3250-3250 and 3250-3125 where pass/fail is 1625 micromho.
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5 NOS Vintage Black Sylvania 7-Pin Vacuum Tube Sockets 28.5mm mounting (Qty)
Mounting holes are about 18.5mm, or 1 1/8″ apart.
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(2) Sylvania Philco Type 45 Tubes Black Plates Foil Getters 1936 Tests NOS
(2) Sylvania Philco Type 45 Power Tubes | Black Plates | Foil Getters | Matched Date Codes 2U | 1936 Production.
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6C8G Sylvania Oak Leaf Bottom Dimpled Foil Getter Black Plates Preamp Tube Rare
Black winged cylinder plates and a bottom dimpled foil getter with a top cap in an ST envelope. this Tube was tested on the Jackson 103 tester were the minimum good is 25 and the average NOS reading for this Tube type is 36.
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NOS NIB Matched Pair Sylvania 7189 Black Plate Vacuum Tubes
These were was tested on our Triplett 3444A tester with results of 11000 and identical plate currents for both tubes, where 11000 is the average new value. Do not buy this item and then ask us to falsify the forms.
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4- NOS 7Y4 Full-Wave Rectifier Vacuum Tubes LOKTAL Chrome Domes Black Plate
Identical to 7Y4 = U149 = CV901. Tube type: Full-Wave Vacuum Rectifier. NOS tubes fall within the Gm characteristic range of an average tube, as published in the RCA RECEIVING TUBE MANUAL, which states “Individual tubes, like any manufactured product, may have characteristics that range above or below the values given.
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10 Sylvania 6BQ5 EL84 Vacuum Tubes 2 GE EL84 2 RCA EL84
TOTAL 14 ALL TEST STRONG -14 TOTAL 1O SYL, 2 RCA, AND 2 GE