ring antenna

ring antenna

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• The Cobra Antenna - A folded wire antenna for 160 meters as appeared on 73 amateur radio magazine june 1997
  [ Hits: 2139 | Votes: 4 | Rating: 5.75 ]

• Super Trombone Antenna - Tombone VHF antenna for 146 MHz ad designed by YB8EIP
  [ Hits: 2746 | Votes: 8 | Rating: 5.75 ]

• 2 Element 30 meter Yagi Antenna - Dimensions and EZNEC plots for a 2 Element 30 meter Yagi antenna with 28 Ohm featuring 4.3 dBd Gain and a 16dB F/B with a good bandwidth.
  [ Hits: 914 | Votes: 2 | Rating: 6.5 ]

• Modeling the W6NL 40m Moxon - This note looks at the antenna and antenna model for the 40 meter Moxon Yagi designed by Dave Leeson, W6NL. The performance of the antenna, through the model, will be explored in several typical settings.
  [ Hits: 2260 | Votes: 7 | Rating: 8.14 ]

• 40m Vertical End-Fed Antenna - A quarter wave vertical end-fed antenna for the 40 meters band. As all vertical antennas, also this aerial requires a good earthing system. In this project the ground is composed by twelve 4, wires buried in the lawn by using a spade to create a slit to drop the wire into.
  [ Hits: 2692 | Votes: 7 | Rating: 5.43 ]

• Homebrewing a 6 Meter Yagi - In this PDF article Zack Lau describe how to homebrew a four element yagi beam antenna for 50 MHz band, including how to build mounting blocks and tubing clamps to hold elements.
  [ Hits: 966 | Votes: 2 | Rating: 5.5 ]

• Portable Vertical Antenna for 40 and 75 - Portable Vertical Antenna for 75m and 40m featuring Low radiation angle for DX, easy to install and to match 50 ohms
  [ Hits: 3935 | Votes: 7 | Rating: 7.14 ]

• Calculate Antenna Lenght in feet, inches and meters - Inches and meters Javascript Wavelength Calculator allow to input a frequency in MHz and calculate wavelenght in several units considering also fractions of wavelenght and the velocity factor. Includes an usefull inch to meter converter
  [ Hits: 502 | Votes: 3 | Rating: 4.67 ]

• Trap on Coax Cable - A trap on the coaxial cable, also known as choke, helps to eliminate the sneaking of the reflected RF- energy to the shack. The trap can be made from the coaxial cable that feeds the antenna
  [ Hits: 964 | Votes: 2 | Rating: 6.5 ]

• Magnetic Loop Antenna for 40-20m - If you have space constraint at your QTH for a HF antenna, you can try contructing this HF magnetic loop antenna for 40-20 meters bands
  [ Hits: 1530 | Votes: 2 | Rating: 3 ]
• The Midnight Loop - An Experimental, High-efficiency, Graphic-Tunable Magnetic Loop antenna and loop controller in a 52 pages PDF presentation with drawings and pictures
  [ Hits: 1175 | Votes: 2 | Rating: 8.5 ]
• Magnetic Loop antenna for VHF - A magnetic loop antenna for the VHF band, featuring a high gain that can be compared to a quarter wave vertical antenna
  [ Hits: 734 | Votes: 9 | Rating: 5.99 ]

• A 20 meter Moxon Antenna - Moxons work great, and they take up less space than full size two element Yagis
  [ Hits: 2371 | Votes: 3 | Rating: 6.67 ]

• WX9DX Quad Antenna - A two meter Quad antenna project with detailed instructions on how to adjust the Quad gamma match
  [ Hits: 1156 | Votes: 6 | Rating: 4.17 ]

• A Homebrew Z-Match Transmatch - A home made antenna tuner based on the W6JJZ basic concept that ,atches balanced loads without the use of lossy baluns, can provide band-pass filtering and harmonic attenuation.
  [ Hits: 1101 | Votes: 0 | Rating: 0 ]
• Z-match ATU covering 160m - 10m - An home made Z-Match antenna tuner unit that cover all HF bands between 10 and 160 meters
  [ Hits: 1565 | Votes: 3 | Rating: 8 ]

• VHF / UHF Antenna Design - A dipole for 2m, 4m, 6m band an hamdwritten note for a homemade vhf antenna that can be tuned across the VHF band
  [ Hits: 1695 | Votes: 10 | Rating: 7.08 ]

• W8JK Beam Antenna - The W8JK is a famous and effective DX antenna, first built by John Kraus, W8JK, in 1937. A Beam antenna with two parallel dipoles driven with opposite phase, with a close spacing of an eighth of a wavelength.
  [ Hits: 5151 | Votes: 21 | Rating: 7.19 ]

• Remotely Controlled Camera by VK5SW - Remote viewing can be useful for Hams, in example remotely viewing antennas during a storm.
  [ Hits: 179 | Votes: 0 | Rating: 0 ]

• PlasmaTV QRN Eliminator - An improved version of DK9NL QRM Killer, with dedicated noise sampling antenna for completely filtering of plasma TV rattle on HF bands
  [ Hits: 899 | Votes: 0 | Rating: 0 ]

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