antenna direction

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antenna direction

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Antennas : 2M
  • Big Wheel Antenna for VHF - An omnidirectional horizontal polarization antenna for 2 meters band in Italian
    [ Hits: 186 | Votes: 2 | Rating: 7.5 ]
  • VHF Bi-Square Beam Antenna - 2 Wavelength ,2 Meter Bi-Square Beam , 5dbd gain. This antennas are very cheeap to build and their radiation pattern is similar to a figure 8 with maximum signal through the loop but they may be used as a near-omnidirectional antenna
    [ Hits: 185 | Votes: 2 | Rating: 9 ]
  • Two elements Telescopic Yagi for 2 Meters - A lightweight PVC hand-held telescopic 2 element 2m (145 MHz) yagi using two pairs of TV rabbit ear antennas as the driven and reflector elements. Approximate directional gain is 5dB.
    [ Hits: 161 | Votes: 0 | Rating: 0 ]
Antennas : 6M
  • Halo and Stub antenna for 50MHz and 70MHz - Omni-directional mixed polarisation antenna for 50MHz & 70MHz. This is a simple Halo and Stub antenna which provides an omni-directional radiation pattern with mixed polarisation, which I built for use with the SUWS WEB SDR
    [ Hits: 137 | Votes: 1 | Rating: 9 ]
  • 50 MHz Omnidirectional antenna - Horizontal polarized omni directional 50MHz Antenna. This antenna is intented to use in a contest station as a second system beside the stacked yagi beam system. An omnidirectional systeem can be an advantage when it comes to short openings on wich the operator must react quickly.
    [ Hits: 309 | Votes: 6 | Rating: 2.5 ]
Antennas : Array
  • Phased Array Antennas - Phased array antennas are composed of multiple individual antenna elements that can have their phase and amplitude controlled to steer the main beam direction in real-time. They are used in radar, communications, and electronic warfare, and offer improved gain and reduced side lobes. A comprehensive document on Phased Arrays include techniques to increase the Antenna Gain and change the Radiation Pattern
    [ Hits: 82 | Votes: 0 | Rating: 0 ]
Antennas : Beverage
  • Beverage Receive Antenna - The Beverage we use is a DX Engineering RPS-1 dual directional 360 foot 109,7 m, oriented due North/South, six feet 1,8 m off the ground. The antenna uses 450 ohm ladder line as the antenna, and 75 ohm RG-6u for the feedline. The antenna runs atop the fence between our property and 5 acres of pasture next door.
    [ Hits: 149 | Votes: 4 | Rating: 7.25 ]
  • Reversible RG6 Beverage Antenna - A project about reversible unidirectional Beverage antennas plus a remote switching system conveniently controlled by the operator
    [ Hits: 182 | Votes: 3 | Rating: 7 ]
Antennas : End-Fed : End Fed Half Wave Antenna Antennas : HexBeam
  • 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: 167 | Votes: 0 | Rating: 0 ]
Antennas : Log Periodic
  • Log Periodic Dipole Array Calculator - Description and online calculator for Log Periodic Dipole Arrays LPDA are directional antennas featuring a relatively constant characteristics across a wide frequency range.
    [ Hits: 222 | Votes: 2 | Rating: 6 ]
Antennas : Moxon
  • Enhancing Performance with W8JK/MOXON Antenna Variant - F5NPV introduces a variant of the W8JK antenna design, employing the MOXON principle. With extended monopoles, it outperforms the Open-Folded W8JK, yielding a 1dbd gain improvement, enhanced performance on 30m and 10m bands, bi-directionality, and lower side attenuation. The design's focus on higher radiation impedance results in increased antenna efficiency and reduced losses. Despite these improvements, the bill of materials remains unchanged.
    [ Hits: 178 | Votes: 0 | Rating: 0 ]
Antennas : Satellite
  • EggBeater Antenna for VHF UHF - This antenna was conceived mainly for high-speed digital transmission via satellite. The antenna is made of two full waves loops , mounted at right angles to each other. Then coupled together, 90 degrees out of phase over a horizontal circular reflector. With this configuration the antenna is omni directional and circularly polarized.
    [ Hits: 226 | Votes: 0 | Rating: 0 ]
Antennas : Theory
  • What We Can Expect from a 2-Element Beam - Method, Units of Measure, and the Dipole Standard of Reference. This article helps in understanding where does beam gain come from in directional aerials like in example Yagi antennas.
    [ Hits: 101 | Votes: 0 | Rating: 0 ]
Antennas : VHF UHF
  • Small DuoBand Antenna - This small dual band UHF VHF directional antenna is good choice for portable operations. This antenna is composed by a moxon antenna for the two meters band and it includes two parastatic elements for 70 cm band.
    [ Hits: 195 | Votes: 1 | Rating: 2 ]
Antennas : Vertical
  • Trapped vertical Antenna - This antenna is an omnidirectional and multiband and it is well suited for DX enthusiasts with limited space. Each of the parallel circuits (trap) behaves like an isolator on its resonant frequency.
    [ Hits: 353 | Votes: 7 | Rating: 2.71 ]
Antennas : WiFi
  • DIY 850 MHz Yagi Antenna - This DIY Yagi costs less than 20 Dollars, and let you increase the performance of your connection. With this project you can build a better Yagi beam antenna resonant on 850MHz, a 8 element yagi directional antenna
    [ Hits: 43 | Votes: 0 | Rating: 0 ]
Internet and Radio : WebSDR
  • WebSDR in Andorra - Listen to online WebSDR located in Andorra Europe. Four receivers on 60m, 20m, 40m, and 80m, connected to a dipole antenna direction East/West
    [ Hits: 130 | Votes: 1 | Rating: 5 ]
Technical Reference : Raspberry Pi
  • Mini Satellite-Antenna Rotator Mk1 - This project is a portable device used to automatically point a directional antenna towards an orbiting satellite. It takes all the effort out of little kids holding the antenna and figuring out where to point it. It allows students to talk through Amateur Radio satellites or download weather satellite images. Note: This is a complex DIY project for the advanced kit constructor.
    [ Hits: 282 | Votes: 1 | Rating: 1 ]
Technical Reference : Test Equipment : RF Probe
  • A Simple Field Strength Meter - Mad your own simple FS meter. It is the simplest thing to make and is good enough to see if the antenna under test is radiating more power than your old ground plane, old mobile vertical or just radiating at all in a particular direction or in all directions.
    [ Hits: 158 | Votes: 0 | Rating: 0 ]

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