RadioPistoia by Pierluigi - Audio tube amplifier project. European tube number guide. Links to other tube sites. [English, Italian] Vacuum Tubes - N9TEW is supplier of vacuum tubes for ham, audio and antique radio purposes. Tube Rebuilders - Technical data, theory, trouble shooting information for high power tubes. The Tube CAD Journal - A monthly webzine devoted to vacuum tube circuit design and understanding. Mike's Electric Stuff - Antique glass and vacuum stuff, for electronics and high voltage. Russian/Soviet - Tube factories and their logos. Duncan's Amp Pages - Resources for vacuum tubes. A data sheet data base for tubes. SPICE models for vacuum tubes, and software available for download. 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. 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. JMH's Virtual Valve Museum - A collection of pictures and information of old, unusual and unique vacuum tubes. 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. Dr. Tube - Tube amp schematics, tube datasheets and other tube related technical info. Triode Electronics, Inc. - Tubes and parts for hi-fi, radio and guitar. Tube data and amp schematics, links to tube amp information. Frank's Electron Tube Pages - Vacuum tube, vintage radio and other electronics information. Tube data sheets and pinout. Eimac's - Design basics, care and feeding of power grid tubes and beam power tubes. DIY Vacuum Tube Testing - Information on building an equipment for the testing of vacuum tubes. Hughs Ominous Valve Works - Covers valves in art, cinema and other uses, history and photos. TV-7 Tube Tester - TV-7 information and technical help.