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(1) AT&T Western Electric 104 - D Tennis Ball Tube 104D Gold Pin Nickel Base GOOD




Item History & Price

Information:
Reference Number: Avaluer:51255367Brand: Western Electric
Original Description:
(1) AT&T Western Electric 104-D Tennis Ball Tube 104D Gold Pin Nickel wax base tests good.Here we have an excellent example of an early AT&T repeater tube. Nice wax base,   good pins, serial number etched on glass "183276". Glass arbor rings true, no signs of any cracks. See all photos. Tested on Amplitrex. Filament ran at 5 volts, plate 130 volts at 25 ma, grid -20. See WE spec sheet and chart. In Auto bias mode results were spot on.Transconductance measured 1000, specs s...how 1180. This puts the tube at 85%, though most of these tubes never test at max output. See actual curve of tube in photos. Free shipping for Buy It Now. Please ask any and all questions.



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