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

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


Dumont - Data and application notes from Allen B. Dumont Labs.

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.

Hytron - Data from Hytron.

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

Machlett - Tube data from Machlett Laboratories Inc.

National Union - Data and application information from National Union.

Raytheon - Tube data from Raytheon Production Co.

RCA - Tube-related data from RCA

Signalite - Data and application information from Signalite, a neon glow tube manufacturer.

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

Tung-Sol/Chatham - Data and application information from Tung-Sol, as well as its Chatham division.

United - Tube data from United Electronics, a Newark tube company that specialized in industrial power tubes, mostly low-tech.

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.

Westinghouse - Data and application notes from Westinghouse's tube department.


Military - US military documents on tube technology.


Catalogs and data relating to manufacturing tubes


Tube-related articles


Tube-related books