vertical antenna

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440 links - and 8 categories

Antennas : 20M : 20 meter Vertical Antennas
  • A shortened 20m vertical - A shortened 20m vertical antenna design made with 4Nec2
    [ Hits: 491 | Votes: 0 | Rating: 0.00 ]
Antennas : 40M : 40 meter Vertical Antennas Antennas : 80M
  • Umbrella Antenna for 80 Meters - An umbrella antenna is basically just a vertical monopole antenna that is top-loaded with a large end-hat. The hat consists of a number of radial wires that slope away, downward from the top of the antenna.
    [ Hits: 375 | Votes: 0 | Rating: 0.00 ]
  • 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: 1178 | Votes: 3 | Rating: 9.67 ]
Antennas : Antenna Calculators
  • Christman Phasing Calculator - Calculate vertical array pahse antenna accorting to the Christman technique
    [ Hits: 168 | Votes: 0 | Rating: 0.00 ]
  • Ground Plane Antenna Calculator  new - This calculator is designed to give the vertical length of a quarter-wave ground plane antenna, and the length of each of the four radials for the selected frequency you have entered
    [ Hits: 93 | Votes: 1 | Rating: 1.00 ]
Antennas : Array Antennas : Dipole Antennas : Four Square Antennas : Helical
  • Mixed Mode Helical Antenna - An experimental omni-directional antenna for 70cm which has both horizontal and vertical gain
    [ Hits: 485 | Votes: 0 | Rating: 0.00 ]
Antennas : J-Pole
  • Improving the Super-J - The collinear J-Pole, often known as the Super-J, does improve the behavior over a regular J-Pole. As many attest, there is an advantage when vertically combining 1/2 radiating sections to have a bit of separation between the half-wave end points. The Super-J has very little separation between the two half-wave radiators.
    [ Hits: 220 | Votes: 0 | Rating: 0.00 ]
Antennas : Multiband Antennas : Portable
  • The Stake Stick Vertical  new - A portable HF vertical antenna that can be used from 10 to 20 meters band
    [ Hits: 182 | Votes: 0 | Rating: 0.00 ]
  • Antennas for portable operations  new - Article describing various type of portable antennas, from verticals, to dipoles, vertical dipoles, random wire with tuners, and end-fed antennas
    [ Hits: 144 | Votes: 0 | Rating: 0.00 ]
Antennas : Theory
  • Designing Vertical Aerials - If you want to design vertical antennas you can find all theory and formulas used to model a vertical aerial calculating capacitance, reactance, building the inductor and calculating resistances. Includes an excel spreadsheet to calculate efficiency.
    [ Hits: 249 | Votes: 0 | Rating: 0.00 ]
Antennas : Theory : Impedance matching
  • The Gamma Match - The gamma match was originally invented as a means of feeding vertical monopole antennas for medium wave broadcasts, which were earthed at the base for lightning protection- Hams are more likely to use a gamma match to feed a dipole or loop element, but the basic theory is easier to understand for the case of a quarter wave monopole.
    [ Hits: 378 | Votes: 1 | Rating: 8.00 ]
Antennas : Vertical
  • 7 Bands Semi Vertical Antenna  updated - A project of a semi vertical trap antenna that can be tuned for 7 bands
    [ Hits: 766 | Votes: 1 | Rating: 10.00 ]
Radio Equipment : HF Portable Antenna : TransWorld Antennas TW2010
  • TW Antennas Assembly - TransWorld Antennas TW2010 Traveler HF Portable Vertical Antenna setup instructions
    [ Hits: 200 | Votes: 0 | Rating: 0.00 ]
  • TransWorld TW2010L Review - A brief review of the TW2010L Backpacker Antenna. This is a portable vertical antenna covering 10,12,15,17 and 20m
    [ Hits: 193 | Votes: 1 | Rating: 9.00 ]
Radio Equipment : HF Vertical Antenna
  • Butternut HF9V Installation - Assembling installing and tuning the Butternut HF9V multiband vertical antenna
    [ Hits: 287 | Votes: 0 | Rating: 0.00 ]
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