Burle Industries, Inc. - Manufacturer and supplier of specialized electron tubes and electro-optic products. USA. - http://www.burle.com/
Penta Laboratories - Manufacturer and distributor of electron tubes for broadcast, industrial, marine and avionics applications worldwide. - http://www.pentalaboratories.com/
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 - http://www.phamitech.com
Daily Electronics Corp. - Electron and vacuum tubes. Industrial, military, broadcast and entertainment applications supplied from inventory. Hard to find and obsolete tubes available. - http://www.worldaccessnet.com/~daily/daily.html
Vintage SoundWorks - Service for all makes of vintage tube amplifiers and radios. NOS and new and used vacuum tubes. - http://www3.sympatico.ca/v.soundworks/
Tom's Tubes - Russian PA tubes. Paypal. - http://www.tomstubes.com
Pacific TV Vacuum Tube Sales - Vacuum tubes and vacuum tube socket sales for antique radio, audio and ham use. We ship worldwide. Online schematics, technical data and photo gallery. - http://members.shaw.ca/pacifictv
D & C Electronics - World-wide distributor of electron tubes, sockets and magnetrons. Replacement tubes for Perkin Elmer mass spectrometer. - http://www.dandcelectronics.com
Thales Electron Devices - Provides electron tubes for space, telecom, radio and TV broadcast, military , X-ray imaging, science and industry applications. Includes products specifications and application notes. Formerly Thomson Tubes Electroniques. - http://www.thales-electrondevices.com/
Vacuum Tubes, Inc. - Worldwide sellers of vacuum tubes and electron tubes for audio, radio, and industry - http://www.vacuumtubesinc.com/
N9Tew - A supplier of vacuum tubes for ham, audio and antique radio purposes. - http://www.hamtubes.com/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. - http://www.superiorxraytube.com
Vacuum Tube Valley - All about vacuum tubes. Tube audio amp kits. - http://www.vacuumtube.com/
TubeTronic - Vintage Vacuum Tubes and Test Equipment. Audio tubes, TV tubes, Radio tubes and Electron tubes. 12ax7, 12au7, 12at7, Generators, Analyzers, and Counters. - http://www.tubetronic.com/
The Tube Center - Providing HAM and amateur radio operators, antique radio enthusiasts, audio professionals and hobbyists the ability to choose from an inventory over 2000 different tube types. - http://www.thetubecenter.com/
Freeland Products, Inc. - Rebuilder of vacuum power grid tubes for industrial, radio and television applications. - http://www.freeland-inc.com/
MachMat main - Vacuum tubes for the audio amp market. - http://www.machmat.com/sales/
The Invention of the Vacuum Tube - In 1879, the American inventor Thomas Edison publicly exhibited his incandescent electric light bulb for the first time. - http://www.maxmon.com/1883ad.htm
Antique Electronic Supply - Books, transformers, capacitors, and resistors. Has an online catalog and shopping cart. - http://www.tubesandmore.com/
Brand X-ray Tube Co., Inc. - Manufacturer of x-ray tubes for use in medical, dental and industrial imaging and inspection applications. - http://www.brandx-ray.com/
Electron Tube Data Sheets - Type index, high powered tubes and data sheets in PDF format. - http://www.mif.pg.gda.pl/homepages/frank/
Tube World, Inc. - Vacuum tubes and sockets for sale. - http://www.tubeworld.com/
House of Tubes - Ham radio and audio tubes. Online catalog with secure ordering. - http://www.house-of-tubes.com/
Lohmann X-Ray - Manufacturer of industrial and medical X-ray tubes, including tubes for medical, dental, and industrial applications. - http://www.lohmannx-ray.com/
California Tube Laboratory, Inc. - Electron tube and vacuum tube manufacturer. High power CW and pulse magnetrons, klystrons and power grid tubes. Product listings and data sheets, and outline drawings. - http://www.caltubelab.com