6t9 tube

2 meter slim jim copper tubing antenna - 2 meters copper tube antenna, tested with an Icom IC-V8000

Hex-Beam Video - A rotating HexBeam antenna video from F5NZY in Paris France

An automatically tuned 7-30MHz mobile antenna - This is a base-loaded vertical antenna that mounts on the car's roof. The loading coil is designed as a variable inductor, with a three-legged chariot that travels up and down inside the coil, with grooved brass wheels running on the coil turns, and driven by a slotted rotor tube.

DirectionalWaveguide - Seattle Wireless - Waveguide antenna is a type of DirectionalAntenna and is a modified waveguide. A waveguide is simply a tube, either rectangular or cylindrical in cross-section, that will carry a microwave radio signal with very low signal loss

Tube Radio Land - A Virtual Museum of Vintage Radios from the Golden Era

Tubes photo gallery - Extensive tubes photogallery by df6na

Convert PC Power Supplies for use by Ham Radio - PC power supply conversion for ham radio use. Slide show overview showing how convert PC Power supplies to ham radio use presented at the August 2007 FSARC meeting.

Penninger Radio - The home of the TIPPER a portable base system & the CLAMP-IT series of mast clamps & the SNAP TUBES series of snap together mast tubes, Snap Tube Joiner, Guy Slip Ring.

Penninger Radio - Mast clamps, tipping bases, roof mounts, tire mount, masts, series of snap together mast tubes.

The Mast Company - Telescopic fiberglass poles, tubes, special products for Amateur Radio stations suitable for ARES / RACES and other public service applications

CPI Eimac Internet - Innovators in Power Tube Technology

House Of Tubes - High-quality brand name tubes ideal for use in audio amplifiers and ham radio equipment at low prices, including used and hard to find tubes.

Econco - Leader in providing power vacuum tubes. A subsidiary of CPI

Penta Laboratories - Penta Laboratories is a Manufacturer and Distributor of vacuum tubes, capacitors and electron tubes for Broadcast, Industrial, Marine and Avionics applications worldwide.

BURLE Industries - Power tubes, high voltage power supplies

Nikola Tesla - Nikola Tesla considered inventor of the radio X-rays the vacuum tube amplifier

Akron Antique Audio - Purveyors of Quality Vintage Tube Audio & Electronics and Vintage radios, Sales Service, Repairs & Restorations of quality vintage tube Electronics, Located in Akron Ohio

Vacuum Tube Supply - Sell New old stock vacuum tubes at discount prices

Radio Tubes, NOS Vacuum Tubes on sale - Old Radio, Ham Radio, NOS Audio, Antique TV Tubes on sale

BEIJING ELJVT - Sell the China made electron tubes over a long period of time, the vacuum tubes/electron valves/Power tubes/Audio Tubes/Thyratrons/Magnetrons and accessories, the tube sockets, the vacuum capacitors, high voltage ceramic capacitors, aluminum electrolytic capacitor.

Duncan's Amp Pages - This is an internet resource for those interested in guitar amplifiers, vacuum tubes, and design tools such as SPICE modelling.

HL1INF RF Amplifiers - Circuits, pictures and data about toroids, tubes and home made power amplifiers

HF Tetrode Linear Amplifiers - I4FAF etrode Tube Linear Amplifier experience

Vacuum Tube Amps - How the tube converts DC to RF Power

2 KW Power Amplifier for 2 meters - 2 KW power amplifier for 144 MHz using the GU84B tube by Paul Chominski WA6PY