Matched Pair GE 13FD7 NOS Vacuum Tubes, B&K 747B Tested - will combine shipping - عيادات أبوميزر لطب الأسنان

$44.95 Buy It Now or Best Offer
free,30-Day Returns

Seller Store bobvcs
(8836) 100.0%,

Location: Paris, Texas
Ships to: US,
Item: 355857359179

Return shipping will be paid by:Seller
All returns accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money back or replacement (buyer’s choice)
Non-Domestic Product:No
GE:GE
Type:Vacuum Tube
Custom Bundle:No
13FD7:13FD7
Country/Region of Manufacture:United States
Modified Item:No

Matched PairGE13FD7 NOSVacuum Tubes Black PlatesSide O GettersHeat RadiatorsCopper Grid PostsDissimilar Triode Sections Tested at 106/92 & 102/84Passed ‘Life Test’ on a calibrated B&K 747B tube tester where the Good range is 65-120*B&K 747B calibrated *Dan Nelson calibrated TV-7D/U with sweep tube adapters, & digital meter with plate current test at 150V. *Paul Hart calibrated/modified Westmore 501 (Triplett 3444)Test results may differ between various testers for many reasons such as technical design, aging components, etc. So while test results are a good indication of quality there can be some difference between the many differently designed & maintained testers.The following definitions are mine as I use them. ‘Balanced’ refers to comparing the gm test results between the lowest to the highest identical sections of a single tube. Within 3% I consider to be ‘Balanced’ ‘Matched’ refers to comparing the gm test results between the lowest to the highest of the identical sections of a set of tubes. ‘Matched’ I consider to be within 10%. Some call similar ‘Gold Matched’ ‘Closely Matched’ I consider to be within about 5%. Some call similar ‘Platinum Matched’ ‘Tightly Matched’ I consider to be within 2%. *For Multiple item purchases click the “Add to Cart” selection for each item *After all items have been added to your cart click on “Request Total From Seller” *An invoice will be returned with the correct ‘combined shipping’ & total due*If your purchase is not fully satisfactory please contact me .International customers welcome: Please do not ask for false value on the customs formFor combined international shipping you need to send an email listing the items you want to buy and I will create a single listing for all the items that you can buy with the corrected shipping charge*Tubes will be shipped in a cardboard box with packing, usually bubble wrap or sheet foam Packed for protection Packed for ease in unpacking *Tubes will generally be cleaned Clean tubes will radiate heat better & operate cooler *Pins will generally be straightened/cleaned as needed Cleaned pins make better electronic connection *Most tubes are shipped in their boxes (or replacement boxes) I often repair a box so it will function properly*I try to get your package in the next mail after receiving your order.

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