j beam

j beam

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• 4 Element Yagi for 18 MHz - A 4 element yagi beam antenna for the 17 meters band with pictures and element dimension and spacing
  [ Hits: 740 | Votes: 4 | Rating: 6.25 ]

• Tape Measure 2M Beam - A Tape Measure Beam Antenna for Radio Direction Finding based on WB2HOL design.
  [ Hits: 571 | Votes: 0 | Rating: 0 ]

• 3 Element Yagi for 40 Meters  ^updated - An homebrew project for a 3 element coil-loaded Yagi beam antenna for 40 Meter band
  [ Hits: 1084 | Votes: 3 | Rating: 5.67 ]

• Six meter dipole project - Design and build an 6 m dipole antenna from aluminum, tubing, that resembles the active element of a yagi beam antenna.
  [ Hits: 901 | Votes: 1 | Rating: 9 ]

• 2 elements Folded Yagi Antenna for 6 Meters - 50MHz Collapsible 2 Element Mini Beam antenna, an overview the development of the 6MBA.
  [ Hits: 741 | Votes: 1 | Rating: 10 ]
• 3 Element Beam for 50 MHz - A six meter band 3 element yagi beam antenna project with shortened elements using coax cables with the outer ends stripped and the center conductor shorted in somewhat of a Bazooka antenna.
  [ Hits: 424 | Votes: 1 | Rating: 8 ]
• 6 Elements Yagi Antenna on 50 MHz - This is a design based on the QuickYagi 4 software by WA7RAI with some changes for practical reasons. The beam uses 6.5 metres of standard 25mm square boom, 12mm diameter elements without tapers. The actual boom length used is 6.3 metres and all parts are readily available.
  [ Hits: 134 | Votes: 2 | Rating: 6 ]

• 7 Element Yagi Calculator - Online javascript antenna calculator designed to give the critical information of a particular beam antenna, in this case a seven element Yagi, for the frequency chosen.
  [ Hits: 3467 | Votes: 57 | Rating: 6.72 ]

• 15m Four Square antenna - A 21 MHz Four Square Beam Antenna This popular antenna for the lower bands, can also work well on 15 meters, QST Article
  [ Hits: 1359 | Votes: 0 | Rating: 0 ]

• Broadband hexbeam - This version of the broadband hexbeam is based on the work of Hunt G3TXQ, HB9MCZ, and Shoemaker K4KIO. EZNEC model is based on a wider element spacing than the version published in QST by K4KIO
  [ Hits: 573 | Votes: 5 | Rating: 7.8 ]
• HexBeam Antenna Explained - A hexagonal beam is a form of the Yagi antenna which is based on parasitic principles developed early in the last century in Japan for achieving gain in one direction.How HexBeam antennas works. A hexagonal beam operates exactly like Yagi antenna, but instead of a driven element that is straight like a dipole, it is a wire bent into the shape of the letter M.
  [ Hits: 171 | Votes: 0 | Rating: 0 ]
• Spiderbeam VS Hex Beam - Differences of Hex Beam and Spiderbeam antennas designs, performance and measurements, rotor considerations when using this two kind of antennas
  [ Hits: 411 | Votes: 6 | Rating: 9.67 ]

• What is Horn Antenna - Horn Antenna - The energy of the beam when slowly transform into radiation, the losses are reduced and the focussing of the beam improves. A Horn antenna may be considered as a flared out wave guide, by which the directivity is improved and the diffraction is reduced. One of the first horn antennas was constructed in 1897 by Bengali-Indian radio researcher Jagadish Chandra Bose in his pioneering experiments with microwaves. The modern horn antenna was invented independently in 1938 by Wilmer Barrow and G. C. Southworth. This Horn model antenna is suitable employed in the UHF or SHF radio bands. Making this horn model antenna it will be easy for a beginner to make if it works in the 10GHz frequency, because small dimensions so it is not so difficult and also offers gain up to 25dBi.
  [ Hits: 74 | Votes: 0 | Rating: 0 ]

• HF Multiband Moxon Antenna - A project that describes a build a multiband wire beam antenna. A 3 band single feed moxon antenna for 20,15,10 meters.
  [ Hits: 709 | Votes: 13 | Rating: 7.54 ]

• A Simple 2 Element Quad Antenna for 10 meters - Quads beams consist of 2 1 wavelength (approximately) loops, ordinarily arranged so that one is the driven element and the other is the reflector. In this project author explains how to build a two element Quad Antenna for the 28 MHz.
  [ Hits: 273 | Votes: 1 | Rating: 7 ]

• L.B. Cebik - W4RNL documents by ON5AU - A collection of antenna projects by W4RNL L.B. Cebik collected in a single link page by ON5AU. Includes ARRL QST, Modeling and Understanding Small Beams and books
  [ Hits: 432 | Votes: 3 | Rating: 10 ]

• 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: 5152 | Votes: 21 | Rating: 7.19 ]

• Sommer Antennas - Sommer Antennas has been a manufacturer and producer of quality amateur radio antennas and antennas for professional use for more than 20 years.Developed by DJ2UT in Germany, our beams were first introduced to the U.S. market at the 1984 Dayton Hamvention
  [ Hits: 251 | Votes: 0 | Rating: 0 ]

• ANjo Antennen - Amateur radio antenna manufacturer produces mainly VHF UHF beam antennas based in Germany
  [ Hits: 105 | Votes: 1 | Rating: 1 ]

• Hy-Gain TH3jr Beam Manual online - Hy-Gain TH3jr Tri-band HF 3 Element Beam Covers 10, 15 and 20 Meters assembly instruction manual
  [ Hits: 180 | Votes: 2 | Rating: 5 ]

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