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(!!!) (BEST PAIR) 485 National Radio tube engraved base mesh-plate NOS 1930's (6.0ma and 6.4ma) (variant of 27)
(!!!) (BEST PAIR) 485 National Radio tube engraved base mesh-plate NOS 1930's (6.0ma and 6.4ma) (variant of 27)
$ 99.99
1 pair) RX-485 National Radio tube engraved base mesh-plate NOS 1930's
1 tube) 6.0ma and Gm=1200
1 tube) 6.4ma and Gm=1200
(485 is a variant of Type 27 with 3V @ 1.25A filament)
(Sparton=The Sparks-Withington Co., Jackson, MI)
See more: vacuum tube
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 (BEST PAIR) 485 National Radio tube engraved base mesh-plate NOS 1930's (6.0ma and 6.4ma) (variant of 27)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/products/1_7b02efb9-48cc-4a26-beed-784e60f8b9ee.jpg?v=1678766302){kind=link}
 (BEST PAIR) 485 National Radio tube engraved base mesh-plate NOS 1930's (6.0ma and 6.4ma) (variant of 27) "Pin It")