omni directional

omni directional

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• A 144 MHz turnstile antenna - Omnidirectional and horizontally polarized VHF antenna
  [ Hits: 1298 | Votes: 4 | Rating: 5 ]
• 2m Big Wheel Antenna - A Useful Horizontally Polarised Omni-directional Antenna with Gain for 144 MHz
  [ Hits: 1323 | Votes: 4 | Rating: 7.75 ]

• Six Meter Quad Turnstile Antenna - Simple 6 Metre DX Antenna based on an article by LB Cebick in QST May 2002 on a Quad Turnstile antenna. This antenna is basically two full wave loops mounted at right angles fed 90 degrees out of phase to produce an omni-directional horizontally polarized pattern
  [ Hits: 702 | Votes: 2 | Rating: 9.5 ]
• Omni-directional Antenna for 50 MHz - This simple project, based on the orginal CobWebb-Antenna model, is about an horizontally polarized, omi-directional antenna for the six meter band.
  [ Hits: 544 | Votes: 2 | Rating: 7 ]

• 50MHz / 6m J-pole Antenna by VK4ADC - The J-Pole is an easy-to-build and inexpensive device that provides an omni-directional vertically polarized antenna without the need for a ground plane. In technical terms, it is an end fed vertical 1/2 wave which is fed via a 1/4 wave matching stub.
  [ Hits: 442 | Votes: 4 | Rating: 6 ]
• J-POLE for 50MHz by IZ0UPS - The J Pole antenna is a good omnidirectional antenna that can be used for portable or fixed station usage. It does not need a ground, and neither complex feed systems. It can be homemade with simple material and in several ways.Article in Italian
  [ Hits: 245 | Votes: 2 | Rating: 10 ]

• Coaxial Collinear Antenna for 70 CM Band - This coaxial collinear antenna was built to test for my own consumption whether or not this antenna method actually works. the guiding principle is that we have multiple 1/4 wave elements fed in series , the radiation from each adds in phase to produce a large vertically polarised omni-directional antenna with substantial gain
  [ Hits: 575 | Votes: 3 | Rating: 6.33 ]

• Delta loops for 15 20 and 30 m - Full Wave Delta Loops for 15, 20 and 30m with perimiter dipole, quiet, low TOA, mono-band - a perfect stealth omnidirectional solution
  [ Hits: 3862 | Votes: 3 | Rating: 1 ]

• 144 MHz Halo Antenna - This halo antenna was built to have an omnidirectional coverage while working in VHF contests.
  [ Hits: 3025 | Votes: 6 | Rating: 5 ]
• 2m Halo Antenna - Construction and analysis of a low cost omnidirectional horizontally polarized antenna for 144 MHz, including notes on halo antenna stacking
  [ Hits: 1013 | Votes: 9 | Rating: 5.34 ]

• Mixed Mode Helical Antenna - An experimental omni-directional antenna for 70cm which has both horizontal and vertical gain
  [ Hits: 1006 | Votes: 3 | Rating: 8 ]

• Exploring The J-Pole Antenna - The J-Pole antenna is a common omnidirectional antenna used in amateur radio, particularly on the VHF and UHF bands. This article is an attempt to explore how the J-pole antenna transforms feed-line impedance to free-space impedance, all the while providing gain found only in the more expensive commercial products.
  [ Hits: 143 | Votes: 0 | Rating: 0 ]
• Construction of a J-Pole antenna for 2 meter - If you like building good antennas, this one is for you. The J-pole is a slim, omnidirectional, half-wave antenna fed at the end through a quarter-wave shorted transmission line. Its predecessor is the famous Zepp antenna developed for the Zeppelin airship.
  [ Hits: 386 | Votes: 2 | Rating: 10 ]

• Magnetic Loop for the 2m band - Such kind of omnidirectional antenna gives the possibility to be QRV with horizontal polarisation, as commonly used for the CW and SSB section of the 2m band. This actual design shows a 1.3:1 bandwidth of about 150kHz, centered to 144.200MHz.
  [ Hits: 573 | Votes: 1 | Rating: 10 ]

• Discone antenna - The basics of what is a discone antenna for wide band or bandwidth omnidirectional applications.
  [ Hits: 1354 | Votes: 0 | Rating: 0 ]

• Discone antenna - About the basics of what is a discone antenna for wide band or bandwidth omnidirectional applications
  [ Hits: 925 | Votes: 1 | Rating: 2 ]
• The Skew-Planar Wheel Antenna - This is a very useful aerial design,forgotten for 40 years. This antenna offer a low omnidirectional pattern and has circular polarization. Can be used as a beacon antenna and simulations are for U-VHF and upper
  [ Hits: 608 | Votes: 3 | Rating: 4 ]
• The Turnstile antenna - An omnidirectional and horizontally polarized VHF antenna by EA4EOZ
  [ Hits: 916 | Votes: 4 | Rating: 3.25 ]

• Easy 2.4 GHz Omnidirectional Antenna - A step by step guide to easily make a homemade antenna for the Wi-FI band and for a fraction of the cost of a common WIFI commercial antenna.
  [ Hits: 3386 | Votes: 63 | Rating: 7.37 ]
• WiFi Spider Antenna - Quarter wave omni-directional spider antenna for 2.4GHz 802.11b
  [ Hits: 1010 | Votes: 8 | Rating: 7.5 ]

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