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• Quad antenna for 10 and 15 Meters - Building guide for a two element quad antenna planned for 28 and 21 Megahertz
  [ Hits: 5790 | Votes: 5 | Rating: 6.6 ]

• Bazooka dipole for 70 cm band - Here is a very simple 70cms dipole from Harald PD2HFE, which uses a single piece of RG-213 coaxial cable 34 cms in length.
  [ Hits: 16568 | Votes: 30 | Rating: 6.67 ]

• A better antenna-tuner balun - Which balun to use? The hybrid balun promises advantages over both voltage and current baluns by ZS1AN
  [ Hits: 23096 | Votes: 11 | Rating: 5.83 ]
• Balun Construction - The design of Ruthroff broadband voltage transformers
  [ Hits: 2363 | Votes: 10 | Rating: 6.5 ]
• Balun construction  ^pop - PDF files describing how to homebrew a 1:2.5 balun
  [ Hits: 26897 | Votes: 41 | Rating: 6.71 ]

• ZS6KMD Nescafe 4:1 Balun - Making a 4:1 balun with a nescafe coffee jar lid and a toroid
  [ Hits: 4509 | Votes: 2 | Rating: 4 ]

• The Broadband Double-Bazooka - The Broadband Double-Bazooka Antenna- How Broad Is It? Adapted from Technical Correspondence, QST, September 1976, the increasing interest in using the coaxial dipole via W2DU
  [ Hits: 5210 | Votes: 2 | Rating: 6.5 ]

• Build a 2.4GHz Vertical antenna  ^pop - Building a 2.4GHz vertical collinear omnidirectional antenna
  [ Hits: 77418 | Votes: 118 | Rating: 6.27 ]

• 2.4GHz Helix antenna  ^pop - Concise instructions on making a broadband helical antenna for 2.4GHz use, such as: 802.11b wireless networking 2.4GHz video links.
  [ Hits: 50985 | Votes: 111 | Rating: 6.16 ]

• A tri-band 2 element portable Yagi - HF Wire Yagi antenna with notes and eznec file on original article of a Portable 3-Band Yagi antenna for 10-15-20 meter band made with wire elements. Include link the original to QST article.
  [ Hits: 15051 | Votes: 4 | Rating: 7 ]

• Ground / Radial Systems - Guide to ground mounting antennas, notes on efficiency, elevated installations, metal towers and masts, other mounting schemas, moble homes and rv, lightning protections, artiche by Bencher
  [ Hits: 1153 | Votes: 1 | Rating: 10 ]

• 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
  [ Hits: 4983 | Votes: 3 | Rating: 6 ]
• 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: 9418 | Votes: 5 | Rating: 6.8 ]

• USA frequency allocations - The radio spectrum in usa, PDF File representing the united stares frequency allocations in graphical mode, dated 2003
  [ Hits: 5835 | Votes: 4 | Rating: 8 ]

• DaimlerChrysler Radio installation guide - Radio communication equipment installation recommendations
  [ Hits: 1683 | Votes: 8 | Rating: 3.76 ]

• Adaptive Home Logic - Monitor / Control your home with APRS short text messages. Featuring Scheduling / Conditional Events, 2-way Speech, E-mail, file data, serial data, digital I/O, Sunrise/Sunset, natural language interface, interactive screen overlay scenes, logging + More
  [ Hits: 1901 | Votes: 1 | Rating: 10 ]

• A diode-switched band-pass filter - High speed silicn diodes work well as RF switches. This article describes how to use diodes for selecting two or more filters ARRL QST article by W1FB
  [ Hits: 2305 | Votes: 3 | Rating: 4.67 ]

• Low-Power Transceiver Kits You Can Build - A Comprehensive roundup of the most popular QRP transceiver kits on the market in recent years in PDF format
  [ Hits: 2419 | Votes: 1 | Rating: 10 ]

• Automotive RFI elimination - ARRL pdf file on how remove car noise from your radio. Modern vehicles are RF noisy environments. Come learn how to identify and silence yor mobile noise sources, by WA6PDP
  [ Hits: 3164 | Votes: 6 | Rating: 6.96 ]

• 50MHz-Transverter 10m/6m from DK7ZB - This transverter was built in 1994, a discription in three parts (german language) for DOWNLOAD as PDF-files. Circuit, printed-boards and layouts in the files
  [ Hits: 7538 | Votes: 13 | Rating: 8.52 ]

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