| Cathode Corner: A scope clock, and tiny scope museum. The "Scope Clock" kit may be purchased. |
| Clocks with Nixietubes: Various types of time keeping devices made with Nixie tubes and Nixie tube like componenets. |
| Dr. Tube: Tube amp schematics, tube datasheets and other tube related technical info. |
| Duncan's Amp Pages: Internet resource for vacuum tubes.A data sheet data base for tubes. SPICE models for vacuum tubes, and software available for download. |
| Eimac's: Care and feeding of power grid tubes. A lot of information on beam power tubes also. |
| Frank Philipse: Vacuum tube, vintage radio and electronics information. Extensive listings of tube data sheets. |
| Frank's Electron tube Pages: Data sheets, search, history, tube bases, and numbering systems, substitution list and an extensive link list. All you would need to know about vacuum tubes. |
| Glowbugs: Some excellent theory, vacuum tube circuits, manuals, intersting stories and information. |
| Heathkit Links: Quite a few good links to tube parts sources. |
| JMH's Virtual Valve Museum: An extensive collection of pictures and information of old, unusual and unique vacuum tubes. |
| Mike's Electric Stuff: Antique glass and vacuum stuff, for electronics and high voltage. |
| RadioPistoia By Pierluigi: Audio tube amplifier project. European tube number guide. Links to other tube sites. |
| Rf Power EXchange: RF power tubes and transistors, large inventory. |
| Russian/Soviet: Tube factories and their logos. |
| 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. |
| The invention of the vacuum tube: In 1879, the legendary American inventor Thomas Edison publicly exhibited his incandescent electric light bulb for the first time. This led to the invention of the vacuum tube. |
| The Tube CAD Journal: A monthly webzine devoted to vacuum tube circuit design and understanding. |
| The Tubes and Valves Online Database: European electron tube charts with characteristic data, basing diagrams, and application info, includes Russian types. |
| Triode Electronics: Tubes and parts for Hi-Fi, Radio and Guitar. Tube data and amp schematics online, links to tube amp information on the web |
| Tube Collectors Association: A great resource for tube theory and operation. Quite a bit of history also. |
| Tube Datasheet Database: Datasheets for about 3,000 vacuum tubes. |
| Tube Rebuilders: Technical data, theory, trouble shooting information for high power tubes. |
| Vacuum tube FAQ: How to use them and how they work. List of tubes and what they are used for. |
| Vacuum Tube FAQ: How to use them and how they work. One of the more accurate vacuum tube FAQs on the net. |
| Vacuum Tube Index: Vacuum tube resources for students and more advanced users.Everything from fundamental techniques to SPICE simulation. |
| Vacuum Tube Valley: All about vacuum tubes. Tube audio amp kits. |
| Vacuum Tubes: N9TEW is supplier of vacuum tubes for ham, audio and antique radio purposes. |
| Vintage H.H. Scott Hi-Fi Stereo Archive: This site promotes open sharing of information, understanding and historic appreciation of vintage H.H. Scott (vacuum tube) consumer high fidelity audio products produced from 1946 through 1966. |
| 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. |
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