(display tube) UV-99 Unknown maker - does not work
By Tube World
$ 5.99
(display tube) UV-99 Unknown maker - does not work 1920's
(UV-99 and UX-99 have a 3.3V @ .063ma Filament, UV base has smaller size pins)
See more: vacuum tube
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 UV-99 Unknown maker - does not work "Pin It")