Just thought I'd mention there are a number of tube manuals/books on
alt.binaries.e-book.technical
Data manuals from RCA, Raytheon, Sylvania, Mullard, Western Electric,
etc. RCA Theramin User and Service Manuals. A collection of tube
amplifier schematics in "143 Tube Amplifier Schematics,' and more.
The posting is a bit old, back in February, so depends on your
server's retention time. Get 'em while they're still there.
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