Other Tube
Tech's Filing Cabinet Miscellaneous General Electric RCA Tube Tech Semi Tech Audio Radio

Vacuum tube technology. Tube technology covered in other major categories (i.e. RCA and GE) are covered in those sections.

Eimac - Data and application notes from Eimac.

Electrons Inc. - Data from Electrons Inc.

FTR - Data from FTR (Federal Telephone & Radio).

Hughes - Tube-related data from Hughes, Inc.

Ken-Rad - Data from the Ken-Rad Co., pre-1945 aquisition by General Electric.

National Union - Data and application information from National Union.

Raytheon - Tube data from Raytheon Production Co.

Sylvania - Tube data from Hygrade Sylvania, later known as just Sylvania.

Tung-Sol - Data and application information from Tung-Sol.

Vacuum Tube Products/H.W. Ulmer/MU - Documents and specs from the three companies formed by Harold. W. Ulmer: Vacuum Tube Products, H.W. Ulmer Co., and MU Inc.

Military - US military documents on tube technology.

Tube-related articles

Tube-related books