By Ake Holm New - Windows Version! The most comprehensive listing of vacuum tubes and data ever assembled is here in an easy-to-use computer program for PC's. Tubedata covers over 30,000 tube types from the U.S., Great Britain, Holland, Germany, Russia and other countries. It includes both receiving and transmitting tubes ranging from antique to modern, as well as military and foreign designations. Tubedata shows tube function, manufacturer, year of introduction, variations, technical data, base diagram and schematic symbol. It includes an inventory program which allows the user to track his own inventory by simply clicking a button from any tube type screen. Ideal for tube collectors, circuit designers, historians and anyone making tube substitutions in vacuum tube equipment. STOCK NO. D-400CD CD-Rom for IBM compatible computers. Requires Windows 95, 98, ME or XP. $39.95 SONORAN PUBLISHING - Email: snrnpub@aol.com PHONE (480) 961-5176 FAX (480) 961-5256