(display tube) UV-99 Radiotron brass base 1920's - lights up but does not have emission
$ 14.99
UV-99 Radiotron brass base 1920's - lights up but does not have emission
(UV-99 and UX-99 have a 3.3V @ .063ma Filament, UV base has smaller size pins)
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 UV-99 Radiotron brass base 1920's - lights up but does not have emission&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_79b44f10-9711-4db4-8849-72181c874626.jpg?v=1696367063){kind=link}
 UV-99 Radiotron brass base 1920's - lights up but does not have emission "Pin It")