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About RF Cafe
Copyright: 1996 - 2024 Web BSEE - KB3UON RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling
2 MB. Its primary purpose was to provide me with ready access to commonly needed
formulas and reference material while performing my work as an RF system and circuit
design engineer. The World Wide Web (Internet) was largely an unknown entity at
the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps
while tying up your telephone line, and a nice lady's voice announced "You've Got
Mail" when a new message arrived... All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowl My Hobby Website: |
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Vacuum Tube (new & used)
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In electronics, a vacuum tube, electron tube (in North America), thermionic valve, or just valve (elsewhere, especially in Britain) is a device used to amplify, switch, otherwise modify, or create an electrical signal by controlling the movement of electrons in a low-pressure space. Some special function vacuum tubes are filled with low-pressure gas: these are so-called soft valves (or tubes), as distinct from the hard vacuum type which have the internal gas pressure reduced as far as possible. Almost all depend on the thermal emission of electrons, hence thermionic. Vacuum tubes were critical to the development of electronic technology, which drove the expansion and commercialization of radio broadcasting, television, radar, sound reproduction, large telephone networks, analog and digital computers, and industrial process control. Some of these applications pre-dated electronics, but it was the vacuum tube that made them widespread and practical. - Wikipedia ABC Vacuum Tubes | 407-761-7205 | Orlando, FL 3.5 Million products stocked. vacuum tubes, radio Tubes, audio tubes, electron tubes, valves, grid caps, sockets, capacitors and tubes for amplifiers. Buy, sell, and swap your tubes, ABC Vacuum Tubes is always buying vacuum tubes for our inventory. Antique Electronic Supply | 480-820-5411 | Tempe, AZ Large supply of new old stock and current production vacuum tubes, parts, supplies and literature for your vacuum tube equipment. BOI AudioWorks | 858-578-5432 | San Diego, CA New, new old stock and used vacuum tubes. Find A Tube | 440-647-3908 | Wellington, OH One of the largest tube specialists also offering schematics for television, radio, hi-fi and auto radios as well as parts, coils, flybacks and yokes for many older televisions and a limited supply of early solid-state TV modules and HV triplers. Greenstone USA | 877-206-5021 | Camarillo, CA Manufactures vacuum tubes & vacuum capacitors. Jim's Crosley Antique Radio Page Very good collection of Crosley radio photos and a selection of models for sale. A unique collection of vacuum tube box art. L-3 Electron Devices | 650-591-8411 | San Carlos, CA Producer of microwave tubes, amplifiers and other vacuum devices for use in a variety of Military and Commercial systems. Electron Devices also provides commercial devices for TV broadcasting, medical applications, satellite communications, and high energy plasma research. Radio Research Instrument Co | 203-753-5840 | Waterbury CT Manufacturer of Radar Systems, Radar Sub-Systems, Pulse Modulators, Antenna Systems, & Microwave Systems. RF Power Exchange | 954-344-7379 | Weston, FL Power tubes, RF & microwave transistors, vacuum capacitors, RF amplifiers/modules, military radio spare parts. RF Power Exchange | 954-344-7379 | Weston, FL Power tubes, RF & microwave transistors, vacuum capacitors, RF amplifiers/modules, military radio spare parts. We let you sell your used and surplus electronics the old fashion way. You communicate directly with the prospective buyer/seller throughout the entire transaction. Trade used transmitters, sell vintage receivers, advertise your antennas; it is all up to you. Ads must be related to radio, television, audio, lasers, hobbyist electronics, etc. Buy & Sell for FREE! No commissions, listing fees, final value fees, or photo hosting fees. Dealers welcome. SND Tube Sales | 636-939-9190 | St. Charles, MO Tubes, testers, manuals. Test Parts | 706-361-0825 | Thomson, GA TestParts.com is America's RF-microwave super store. We sell both new and quality used RF-microwave communication parts. We routinely stock more than 35,000 'hard-to-find' parts. 877-570-0979 | Hamilton, Ontario Canada Audio tubes for any amplifier: from high end home audio to classic guitar amps. Thomas Electronics | 315-923-2051 | Clyde, NY Manufacturing, repairing, and refurbishing cathode ray tubes (CRTs) since 1948. Give new life to your vintage equipment with a new phosphor coating or specify a custom replacement. Product profile includes CRTs, high voltage power supplies, LCD backlights, LCD ruggedized displays, electromagnetic components, deflection coils, & monitors. Environments testing and custom glass working services available. TubeDepot, LLC | 877-289-7994 | Memphis, TN Supplier of vacuum tubes, tube sockets, capacitors, resistors, potentiometers, tube amp kits, and more. Tubesworld | +31 6 155 235 87 | Maastricht, The Netherlands We have vacuum tubes of all kinds, from little tiny ones you can build a hearing-aid with, to the big ones you can use to get yourself a radio transmitter or massive amplifier! Just look trough our stock, or use the handy search function. Tube World | 920-208-0353 | Sheboygan, WI Provides high quality new old stock vacuum tubes. Vacuum Tube Valley | Lakeport, CA Rebuild kits, cable, vintage caps, parts, NOS/vintage tubes, radio & tuner tubes, RF/sweep tubes, guitar amp tubes. VacuumTubes.net | 800-326-4140 | La Crosse, FL Maintains a working inventory of over 5,000 different radio tubes, amplifier tubes, and vacuum tubes in stock at all times. Vacuum Tubes | 407-481-9994 | Orlando, FL Tubes, testers, manuals, T-shirts, radios. Related Pages on RF Cafe - A Course in Radio Fundamentals-Vacuum Tubes Sep 1942 QST Tube Production Video by RCA c.1942 |
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These Are Available for Free |