helical

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helical

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Antennas : 160M
  • The 160M No Excuses Homebrew Vertical - This antenna is designed for stations having a difficult time putting a decent signal on 160M from small or CC&R d lots. It is a 24.5 ft. vertical antenna, made from three 10 ft. PVC sections bolted together, and half wavelength of antenna wire helically wound around the PVC sections.
    [ Hits: 404 | Votes: 0 | Rating: 0 ]
Antennas : 20M
  • Directional Helical Antenna - This antenna is intended for the 20-meter Band. There are two Voltage Fed Helical Dipoles, made with 2 slinky that fed with phase shift in 90 degree
    [ Hits: 1083 | Votes: 1 | Rating: 8 ]
Antennas : 40M
  • Helically wound antenna for 40m - A helically wound vertical antenna experiment. 14 meter of wire wounded on a 8 meter fishing pole with 4 elevated radials
    [ Hits: 538 | Votes: 2 | Rating: 9 ]
Antennas : 40M : 40 meter Yagi Antennas Antennas : 80M
  • Helically Loaded Magnetic Loop Antenna - A considerably shortened Magnetic Loop antenna with performance of a single conductor text book magnetic loop.
    [ Hits: 572 | Votes: 16 | Rating: 1.56 ]
Antennas : Antenna Calculators
  • Helical Antenna Design Calculator  updated - Helical antennas invented by John Kraus give a circular polarized wave. They are one of the easiest to design. Find a tube with a circumference equal to one wavelength, and wrap wire in a helix spaced a quarter wavelengt
    [ Hits: 2158 | Votes: 16 | Rating: 6.63 ]
Antennas : Helical
  • The Helical Windom Antenna - A marriage of the windom and slinky antennas, experimental home brew antenna by NC4TC
    [ Hits: 2709 | Votes: 0 | Rating: 0 ]
  • Helical Antenna for WiFi - Improved Helical Antenna Design for 802.11b WLAN by PA0HOO
    [ Hits: 2892 | Votes: 5 | Rating: 6.4 ]
  • Helical Antennas by F5ZV - Article on Helical Antennas in french
    [ Hits: 964 | Votes: 1 | Rating: 2 ]
  • Helical Antennas - The Helical antenna description, a simple way of obtaining high-gain and a broad band of frequency characteristics
    [ Hits: 1341 | Votes: 1 | Rating: 10 ]
  • HF Helical Whip Calculator - Calculating HF helical whip antenna for mobile or portable operation
    [ Hits: 1157 | Votes: 6 | Rating: 3 ]
  • Helical HF Portable Antenna - An easily transportable vertical antenna for 20 meters collapsible to 4 feet
    [ Hits: 1772 | Votes: 0 | Rating: 0 ]
  • Helical Dipole for 40m - An helical dipole made with 10,7 meters of wire resonating on the 40 meters band, by PY1ZFK based on a project by DL8VO
    [ Hits: 1085 | Votes: 3 | Rating: 7 ]
  • Mixed Mode Helical Antenna - An experimental omni-directional antenna for 70cm which has both horizontal and vertical gain
    [ Hits: 1004 | Votes: 3 | Rating: 8 ]
Antennas : Quadrifilar Helix
  • Quadrifilar Helical Antennas - A page dedicated to the Quadrifilar Helical Antennas, with projects, pictures and antenna plans by OH2GVB
    [ Hits: 946 | Votes: 7 | Rating: 3.85 ]
Antennas : Stealth
  • Simple Balcony Antenna - Antenna for limited space, made from 24AWG wire helically wrapped around the top element of a 3-element cane pole, is basically a fully-loaded vertical and performance are limited and should represent the last resort for extreme cases.
    [ Hits: 920 | Votes: 1 | Rating: 7 ]
Antennas : WiFi Software : Circuit Design
  • Online Helical Coil Calculator - This online calculator will give as output the Inductance L of a coil, including the total lenght of the wire needed to wound the coil. As input, requires the Diameter, number of turns, wire diameter and turn spacing
    [ Hits: 341 | Votes: 7 | Rating: 5.71 ]
Technical Reference : Filters
  • PC Board Filters - Offer performance comparable to tin-box filters, and except for being bigger, stack up pretty well with those expensive little helical jobs. You just have to be able to make your own PC boards.
    [ Hits: 379 | Votes: 0 | Rating: 0 ]

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