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tube specification



Hi All,

I've bought some tubes at Milan Hamfest but for two I've no
specification

 one is Amperex 7609 (I think tetrode)

 other is RCA VT165 (1624) With the shape of 807


Is the first equivalent to the 4x150a?


If anyone have informations, specification or pinouts about i'll be very
glad.

Sincerely

Vladimiro Mazzilli