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871 links and 5 categories about design on dxzone.com

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Antennas : 6M
  • A 6m portable 4 element quad - This antenna is based on a design for a portable 2 element 6m Quad by VE7CA, which is featured in the 19th Edition of the ARRL Antenna Handbook
    [ Hits: 5965 | Votes: 21 | Rating: 8.35 ]
Antennas : Feed Lines : Choke
  • Choke balun - Essentially, a choke balun is designed to 'divorce' your antenna from the feed line. if your feed line is coaxial cable then you don't want it to be part of your antenna. you want to be able to deliver all your power to the radiator itself, i.e. 'the antenna'. a choke balun does this admirably
    [ Hits: 22888 | Votes: 11 | Rating: 7.27 ]
Antennas : Helical
  • A 16 Turn S-Band Helix - This design represents the smallest practical antenna for Oscar-13 mode-S. Perfect beacon reception at all times is possible, and acceptable SSB even at 43,000 km range.
    [ Hits: 8275 | Votes: 3 | Rating: 9.67 ]
  • 13 cm Helix Antenna  pop - Here is the design of a 2.4 GHz antenna that is ideal for amateur satellite communications. This antenna is easy to assemble because the design itself tolerates inaccuracies in the construction without really affecting performance.
    [ Hits: 60984 | Votes: 66 | Rating: 5.90 ]
Antennas : J-Pole
  • Design your Own Super J Pole - a Javascript for calculating the lengths of tubing to be used for the construction of a Super J-Pole.
    [ Hits: 7129 | Votes: 14 | Rating: 5.29 ]
Antennas : Tuners
  • N4EKV.COM - Antenna Tuners - Homebrew balanced-L antenna tuner. Covers 160-10m. Designed specifically for balanced feedlines.
    [ Hits: 4475 | Votes: 2 | Rating: 10.00 ]
Antennas : WiFi
  • Helical Antenna for 2.4 GHz and 802.11b - The following page details construction of a Helical antenna based on the superb design by Jason Hecker.
    [ Hits: 5013 | Votes: 6 | Rating: 7.17 ]
  • How to build a tin can waveguide antenna  pop - Looking for an inexpensive way to increase the range of your wireless network? A tin can waveguide antenna, or Cantenna, may be just the ticket. This design can be built for under $5 U.S. and reuses a food, juice, or other tin can.
    [ Hits: 36328 | Votes: 41 | Rating: 7.28 ]
  • Pringles Yagi Antenna - Design and build a Pringles Yagi antenna for 2.4Ghz.
    [ Hits: 7734 | Votes: 6 | Rating: 7.50 ]
  • PringlesCantenna - Seattle Wireless - The PringlesCantenna is an ultracheap Yagi-type directional antenna that can be built for under $10. The original Pringles Yagi was designed by Andrew Clap.
    [ Hits: 8515 | Votes: 3 | Rating: 7.00 ]
Ham Radio : Blogs
  • Planet Ham - Planet Ham is a website designed to aggregate blogs produced by Amateur Radio enthusiasts. The aim is to provide a central directory of Amateur Radio blogs so that interested browsers can visit subscribers sites and read about the various aspects of the hobby in detail
    [ Hits: 1783 | Votes: 4 | Rating: 9.50 ]
Manufacturers : Antenna Parts
  • The KO6YD Screwdriver Antenna Memory - The Screwdriver Antenna Memory (SAM) product is designed to enhance the mobile antenna commonly called the "Screw Driver". It replaces your current control unit and provides an automated memory feature that eliminates the visual coil tuning method commonly used.
    [ Hits: 2447 | Votes: 1 | Rating: 10.00 ]
Manufacturers : Electronic Components
  • Xtal Set Society, Inc - The society publishes several books about crystal radio. Sell crystal set projects, tips for crystal radio design, ham radio kits, radio parts and common radio electronic components
    [ Hits: 2919 | Votes: 7 | Rating: 7.64 ]
Manufacturers : Parts and Surplus
  • Sunstone Circuits Priority listing - Sunstone Circuits is your easiest source for quoting and ordering printed circuit boards online. We are three respected brands in one: PCBexpress quickturn boards, PCBpro.com full-featured and design-checked boards, and PCB123 design software.
    [ Hits: 459 | Votes: 3 | Rating: 8.00 ]
Manufacturers : Power Supply
  • Peter W. Dahl Co. - Custom transformers by Mr. Dahl has been designing specialty transformers and reactors for over 35 years, and has been a licensed Ham radio operator, K0BIT, since 1955.
    [ Hits: 398 | Votes: 1 | Rating: 10.00 ]
Manufacturers : Speakers and Headsets
  • Starline Electronics - Full-size Professional Circumaural (closed type) Stereo Headphone Monitor designed for studio use, swl and amateur radio.
    [ Hits: 421 | Votes: 1 | Rating: 2.00 ]
Manufacturers : Towers and Accessories
  • Rotating Tower Systems - Using our components you can build a rotating tower with greater capability than 3-4 static towers. A rotating tower allows common rotation of HF stacked arrays, VHF and UHF arrays, and antennas mounted at optimum heights. Component design also allows tower shunt loading and end support for wire antennas
    [ Hits: 1152 | Votes: 3 | Rating: 6.33 ]
Operating Modes : Meteors
  • F5VLB amateur radio astronomy station  updated Priority listing - F5VLB and EA4EOZ have designed a small but powerful system using satfinder and standard LNB to make radioastronomy. A step by step descritpion for the novice about radioastronomy, VLB and listening to echo of meteorite.
    [ Hits: 1124 | Votes: 3 | Rating: 10.00 ]
Shopping and Services : QSL Printing
  • Qsl factory - qsl cards - Qsl card printer and designer offering truly original styles of quality single and double sided color qsl cards, both ready-made and custom.
    [ Hits: 978 | Votes: 3 | Rating: 7.00 ]
Shopping and Services : Regional : USA
  • RadioLabs - Radio, Wireless and Beyond - Specialize in engineering, design and repair of all rf equipment. Dealer for two way radios, scanners, shortwave radios, wi-fi antennas, wifi amplifiers. Based in Fortuna, California.
    [ Hits: 527 | Votes: 5 | Rating: 5.80 ]
Shopping and Services : T-shirts
  • MrHamRadio.com - Custom Printed T-Shirts - Custom Design T-Shirt with No Minimum order (you can buy just 1) and NO Setup Fee. Will transfer your Favorite Images from JPEG's and E-mail attachments and from photo prints to Custom T-shirts with unbelievable Crispiness and Clarity of true Color Reproduction. Our image transfer paper is 11.5" x 8" heavy duty industrial grade.
    [ Hits: 888 | Votes: 1 | Rating: 10.00 ]
Technical Reference : Amplifiers
  • 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: 772 | Votes: 5 | Rating: 6.80 ]
Technical Reference : Electronics
  • Delabs technologies Product Design and Engineering - Around 200 electronic circuits in pdf format or images, There are also over 1000 links to useful electronics, freeware, open source websites. There are some 100 useful documents, software and pcbs too. Mainly industrial electronics, instrumentation. Covers Various aspects of electronics and basics of circuit design.
    [ Hits: 575 | Votes: 2 | Rating: 7.00 ]
Technical Reference : Lightning Protection
  • Grounding and RFI - Described system was designed to provide a high level of lightning protection - there are three levels of defense to guard against let-through. It isn't perfect, but does, however, follow good guidelines and shows measured improvements in RFI reduction.
    [ Hits: 5331 | Votes: 4 | Rating: 4.75 ]
Technical Reference : SWR Meters
  • Prototype SWR meter for 2.45Ghz - Testing antenna's is a lot easier if you have a good swr meter this is a prototype of a design by g7eyt.
    [ Hits: 8854 | Votes: 7 | Rating: 6.43 ]
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