Shortwave Transmitter Tubes - A service from TDP with links to and information about the manufacturers, rebuilders and distributors/suppliers of tubes. An extensive list of data sheet sources.
Svetlana Applications Notes - Application notes on the care and feeding of Svetlana tubes, mostly for high power service.
TechInfo_2 - Vacuum tube equations, design and technical information.
Triode Electronics, Inc. - Tubes and parts for hi-fi, radio and guitar. Tube data and amp schematics, links to tube amp information.
The Tube CAD Journal - A monthly webzine devoted to vacuum tube circuit design and understanding.
Tube Rebuilders - Technical data, theory, trouble shooting information for high power tubes.
Tubeopedia - A wiki encyclopedia of information on vacuum tubes and related topics including equipment that uses tubes, circuits, theory, and companies.
The Tubes and Valves Online Database - European electron tube charts with characteristic data, basing diagrams, and application info. Includes Russian types.
Vacuum tube FAQ - How to use them and how they work. List of tubes and what they are used for.
Vacuum Tube Index - Vacuum tube resources for students and more advanced users.Everything from fundamental techniques to SPICE simulation.
Vacuum Tubes - N9TEW is supplier of vacuum tubes for ham, audio and antique radio purposes.
Vintage H.H. Scott Hi-Fi Stereo Archive - Information on vintage H.H. Scott (vacuum tube) consumer high fidelity audio products produced from 1946 through 1966. Includes schematics.
World Tube Audio Portal - Audio tube related link list, forums and newsgroups, tube amplifier collection and tweaking. Audio amplifiers that use tubes. Tube replacement list included.
