vacuum

Soft copper Tube Loops - Air conditioning soft copper tubes are perfect for loop construction. If you want to try a loop you must have an air variable capacitor or a vacuum variable capacitor. Article by PY1AHD

Sparkmuseum - Vintage radio and scientific apparatus by john jenkins, include antique radios, Horn Loudspeakers, Vacuum Tubes, A.C. Receivers

Camden Antique Radio Service Priority listing - Expert, affordable antique radio repair, all home and auto vacuum tube radios, located just south of Atlanta Georgia

Glowbugs Times - Homebrew Tube Projects, Vacuum Tube Data, Articles From Old Handbooks

The VE3TO Radio Beacon Transmitter - The VE3TO beacon transmitter is a hybrid, consisting of both modern solid state and old vacuum tube technology working on 10132.0 kHz

Vacuumschmelze - Manufactures inductive components for telecommunications and power electronics applications.

Tubes.ru - specialize in trading Russian vacuum tubes used in broadcasting, amateur radio, Hi-Fi audio, meteorology, communication, medical applications and industr

Penta Laboratories - Penta Laboratories is a Manufacturer and Distributor of Vacuum Tubes, Capacitors and Electron Tubes for Broadcast, Industrial, Marine, Medical, and Avionics applications worldwide.

Viking Vintage - Restored vintage amateur radio, shortwave & other electronics from the vacuum tube era! Specialists in restored Ham Radio boatanchors

Altana Tubes - Brazilian vacuum tube, capacitors, transformers, plugs and connectors, resistances dealer

Vacuum Tubes, Inc. - Worldwide sellers of vacuum tubes and electron tubes for audio, radio, and industry

Ask Jan First Electron Tubes - German vacuum tubes dealer

Antique electronic supply - Vacuum tubes, accessories and products for antique radio restoration

Tube World - Your one-stop source for high quality new old stock vacuum tubes.

QRO-Parts.com - Svetlana tubes also Russian capacitors,vacuum and coaxial relay, for RF Power Linear Amplifier builders. Amateur-Radio, Broadcast. Full Online Catalog.

Tubeworld - Source for high quality new old stock vacuum tubes

Antique Radio Tubes For Sale  ^new - Radio Tubes, Audio tubes for sale, Antique Tube Supply - Your center for Vacuum Tubes for all your old Radio Tube gear.

Power Gride Tubes - Article on tubes and their usage in power amplifiers design. Explain failures of tube in RF power amplifiers, a common problem in the SB-220 SB-221, TL-922 and other amplifiers.

Vacuum tube regenerative receiver - How to build your first vacuum tube regenerative receiver

Tube Data Sheet Locator - Resource for finding data on vacuum tubes.

Tube Reference - Electronic Vacuum Tube Reference Manual & Specifications from the RCA Receiving Tube Manual.

Vacuum Tubes - This overgrown page covers all kinds of vacuum-tube electron devices, especially receiving tubes.

Fun With Tubes - Dedicated to passing on and preserving knowledge of vacuum tube circuits and techniques

Vacuum tube liquid cooling system - This article describes an alternative to water as the cooling liquid for amateur radio vacuum tube power amplifiers. This cooling system is designed for adequate vacuum tube cooling, reasonable cost, and very low maintenance. By K8CU

About vacuum power tubes - KK5DR on RF power tubes