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307A=VT-225 Ken Rad NOS coated glass 1940's a few glass chips inside tube (72ma)

$ 39.99

307A=VT-225 Ken Rad NOS coated glass 1940's a few glass chips inside tube

72ma

Gm=4800

 

Good Ma range 45=50ma

Gm Gm = 4000


 

(307A=VT-225 Sylvania / Ken-Rad, Identical to Western Electric, 6 Watt Pentode)
(The 307A is a 306A with a quick heating filament, 5.5V @ 1A filament,
5-pin bayonet socket with top cap)

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