Lohmann X-Ray - Manufacturer of industrial and medical X-ray tubes, including tubes for medical, dental, and industrial applications. Electron Tube Data Sheets - Type index, high powered tubes and data sheets in PDF format. Yueqing Zhengli Rectifier Corp. - Tube rectifiers. Site in English and Chinese. Tube World, Inc. - Vacuum tubes and sockets for sale. Brand X-ray Tube Co., Inc. - Manufacturer of x-ray tubes for use in medical, dental and industrial imaging and inspection applications. Kennetron, Inc - Offering rebuilt vacuum, oscillator, induction and transmitter tubes. Superior X-Ray Tube Company - Manufactures high quality custom-made x-ray tubes for a wide range of applications such as thickness gauging, food inspection, bone densitometry, dental, medical, and baggage inspection. N9Tew - A supplier of vacuum tubes for ham, audio and antique radio purposes. Vacuum Tubes, Inc. - Worldwide sellers of vacuum tubes and electron tubes for audio, radio, and industry D & C Electronics - World-wide distributor of electron tubes, sockets and magnetrons. Replacement tubes for Perkin Elmer mass spectrometer. New Sensor Corporation - Manufacturer and wholesale distributor of vacuum tubes and electronic parts. Sovtek tubes. Magnatek X-ray sources - "Integrated X-ray generators". Also prototype x-ray sources. Danish company. Vintage SoundWorks - Service for all makes of vintage tube amplifiers and radios. NOS and new and used vacuum tubes. Phamitech International Company Ltd - Exporter of electron tubes, TWT, valves, thyratrons, magnetrons, klystrons, transmitting tubes, heating tubes, vacuum interrupters and X-ray tubes made in China Antique Electronic Supply - Supplier of books, capacitors, transformers, resistors and other electronic components for vacuum tube based equipment. Offers materials and handbooks. Alum Rock Technology - Manufactures a 304TL amplifier, plus audio transformers and related power transformers and inductors. San Jose, California, United States. Emission Labs - Produces electron tubes in the Czech Republic. Pacific T.V. - Vacuum tubes and vacuum tube socket sales for antique radio, audio and ham use. They ship worldwide. Online schematics, technical data and photo gallery.