tube design

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tube design

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Antennas : 6M : 6 meter J-Pole Antenna
  • 6 Meter Homemade J-Pole Antenna - A homemade j-pole antenna for six meters band, designed to work on local repeaters, and working on the 52-53 MHz. Includes a list of needed materials and detailed description on assembling the copper tubes used to build this antenna.
    [ Hits: 252 | Votes: 3 | Rating: 4.67 ]
Antennas : 70cm
  • 6 element UHF Yagi antenna - A standard 6 elements design scaled for UHF application. All material used in this project are easily obtainable tubes and rods which is limited within a total budget of $18.
    [ Hits: 3893 | Votes: 10 | Rating: 6.79 ]
Antennas : Antenna Calculators
  • Helical Antenna Design Calculator  updated - Helical antennas invented by John Kraus give a circular polarized wave. They are one of the easiest to design. Find a tube with a circumference equal to one wavelength, and wrap wire in a helix spaced a quarter wavelengt
    [ Hits: 2158 | Votes: 16 | Rating: 6.63 ]
Antennas : Loop
  • Horizontal Loop Antenna Experiments - The HF horizontal loop has been around for many years now. This article includes a YouTube video and discusses the reasons for looking at this antenna, its design, and its installation. There are some on-air comparisons against three regular double bazooka (coax) dipoles and the Par SWL End-Fed antenna.
    [ Hits: 926 | Votes: 5 | Rating: 8 ]
Antennas : Mobile
  • 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.
    [ Hits: 4048 | Votes: 2 | Rating: 1 ]
Antennas : Traps
  • VE6YP CoaxTrap - The Coax trap program computes design parameters for the construction of coaxial traps for HF usage. Typically these are constructed from PVC tube and RG58/59 coax
    [ Hits: 7441 | Votes: 26 | Rating: 6.54 ]
Antennas : Vertical
  • Antenna for deed restricted lots  pop - An effective 10-20m DX antenna for deed restricted lots. The article by K7ZB introduces a simple 10-20m DX antenna suitable for deed-restricted lots. The antenna, a 15' vertical design, facilitated contacts with over 200 countries worldwide. Its design employs a telescopic aluminum tube and radial wires for multi-band operation, requiring an external antenna tuner for optimal performance. The mounting scheme and construction details ensure effectiveness and ease of use.
    [ Hits: 56267 | Votes: 13 | Rating: 6.46 ]
Manufacturers : Amplifiers
  • Discovery Power Amplifiers - The Discovery series of amplifiers are designed and built in the UK by Linear Amp UK Ltd, one of the world's leading amplifier manufacturers, specializing in high power RF tube amplifiers. The amplifiers use large GS31 or GS35 ceramic triode tubes. Band coverage 6m, 2m and 70 cms
    [ Hits: 3036 | Votes: 2 | Rating: 4 ]
Manufacturers : Antenna Parts : Fiberglass tubing
  • Cleveflex - Clevaflex is a manufacturer of flexible wound tubing that can be used in a variety of applications. our unique manufacturing process allows tubes to be designed and built with a multi-ply convoluted wall contour that creates a permanently bonded tube.
    [ Hits: 813 | Votes: 0 | Rating: 0 ]
Manufacturers : Parts and Surplus
  • Valve radios - Viking SW design and produce valve (tube) receivers for the ham and SWL.
    [ Hits: 1268 | Votes: 0 | Rating: 0 ]
Manufacturers : Tubes & Semiconductors
  • International Components - International Components Corporation has an extensive range of electronic components consisting of audible signal devices, speakers, microphones, capacitors, electron tubes, connectors, and accessories designed in recognition of the diversity of applications and special characteristics encountered by designers in today's complex world.
    [ Hits: 1721 | Votes: 0 | Rating: 0 ]
  • California Tube Laboratory - CTL designs and manufactures a wide range of high-power pulse and CW magnetrons, and provides cost-effective magnetron rebuild services for commercial, industrial and defense users.
    [ Hits: 412 | Votes: 0 | Rating: 0 ]
Technical Reference : Amplifiers
  • WB0NNI Home Brew HF Amps and Tutorials - Tutorials and other information on designing and building hf amplifiers. Includes tube data and amplifier projects.
    [ Hits: 21721 | Votes: 53 | Rating: 7.46 ]
  • Duncan's Amp Pages - This is an internet resource for those interested in guitar amplifiers, vacuum tubes, and design tools such as SPICE modelling.
    [ Hits: 1007 | Votes: 5 | Rating: 6.8 ]
  • TANKIT - A free design aid for vacuum tube linear RF power amplifiers. Determine plate circuit operating parameters and design pi or pi-L tanks quickly and easily.
    [ Hits: 1935 | Votes: 3 | Rating: 10 ]
Technical Reference : Amplifiers : HF Amplifiers
  • HF power amplifier using GI7B - Gi7b is tube designed for microwaves but working good as HF amplifier. Idea is to build cheap, reliable HF amplifier covering 160 meters band.
    [ Hits: 4062 | Votes: 12 | Rating: 4.92 ]
  • 3-500Z Amplifier Project - This article loaded with nice pictures and schematics, describes a 160-10 meter linear amplifier that uses a pair of 3-500Z triode power tubes. It was designed and constructed by William Moneysmith, W4NFR. The amplifier features fast warm up and 1500-Watt RF output with 100-Watts of drive.
    [ Hits: 1081 | Votes: 4 | Rating: 9.5 ]
Technical Reference : Amplifiers : RF Amplifiers Theory
  • 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.
    [ Hits: 1002 | Votes: 2 | Rating: 6.5 ]
  • How to Design an RF Power Amplifier - This video will provide a foundation for understanding how power amplifier circuits work. If you are new to High Frequency Power Amplifier Circuit Design, this is the place to start.
    [ Hits: 673 | Votes: 1 | Rating: 10 ]
Technical Reference : Vacuum tube
  • 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
    [ Hits: 666 | Votes: 1 | Rating: 10 ]

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