Home : Antennas : Theory : Page 4
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  • Grounding system - Perhaps one of the most over looked aspects of setting up a listening post is a ground system
    [ Hits: 12684 | Votes: 11 | Rating: 4.18 ]
  • Groundplane Antennas at Various Heights - Mounting on Roof or at Ground Level? Why ground plane antenna works better at lower level.
    [ Hits: 787 | Votes: 2 | Rating: 10.00 ]
  • Harmonic Operation of OCFs - Theory - Up, Up, and Away or Harmonic Operation of OCFs
    [ Hits: 454 | Votes: 0 | Rating: 0.00 ]
  • Height versus take off angle - One of the most important factor for DXers although many are not aware of this.
    [ Hits: 404 | Votes: 0 | Rating: 0.00 ]
  • HF Antenna Coupling Techniques - Look at some of the various ways in which power can be delivered from a transmitter to a radiating system
    [ Hits: 402 | Votes: 0 | Rating: 0.00 ]
  • HF Antennas 101 - Here are 10 tips and truisms that every ham should know about antennas, by W20QI
    [ Hits: 617 | Votes: 0 | Rating: 0.00 ]
  • HF insulation, the pitfalls - Although insulation may seem relatively insignificant in the larger picture, on it depends the quality of your performance on air and how long you will be communicating for.
    [ Hits: 448 | Votes: 0 | Rating: 0.00 ]
  • HF loops vs Half Loops - HF loop and half-loop antennas in a few words
    [ Hits: 1258 | Votes: 0 | Rating: 0.00 ]
  • Horizontal Antennas above Real Ground - Antennas are influenced by the effect of the ground and by the type of conductors from which they are constructed. Effects of various types of grounds on a 1.825 MHz horizontal 0.5 wave dipole
    [ Hits: 481 | Votes: 0 | Rating: 0.00 ]
  • Horizontal Half-wave Dipole above a Counterpoise - All antennas that are situated close to the ground are affected by that ground to some extent. This article explain effects and benefits of counterpoise.
    [ Hits: 1142 | Votes: 0 | Rating: 0.00 ]
  • Horizontal vs Vertical Antennas - CX2UA article on differences of vertical and horizontal antennas in spanish
    [ Hits: 386 | Votes: 4 | Rating: 7.75 ]
  • How does antenna height affect VHF communications - How to calculate range for a VHF antenna with a simple formula and how to increase VHF coverage.
    [ Hits: 448 | Votes: 2 | Rating: 9.00 ]
  • How good an antenna is ? - How good is an antenna? Four figures describe how good an antenna is compared to the required performance, swr directivity gain and bandwidth
    [ Hits: 177 | Votes: 0 | Rating: 0.00 ]
  • How important is Low SWR - What exacly is the meaning of SWR ? Is a Low SWR really important
    [ Hits: 766 | Votes: 4 | Rating: 7.50 ]
  • How to Construct a Dipole - Basic and illustrated article on building wire dipole antennas. This page is about "how to build a dipole antenna"
    [ Hits: 10403 | Votes: 19 | Rating: 6.53 ]
  • How's Your SWR? - Chart showing how SWR effects how much power you actually radiate from your antenna.
    [ Hits: 898 | Votes: 0 | Rating: 0.00 ]
  • Human Body Resonance Frequencies - Wondering whether human body could be used as an antenna.
    [ Hits: 299 | Votes: 1 | Rating: 10.00 ]
  • Idiot's guide to antennas - A very basic guide to antennas concept. Explain the usage of dummy load, basic antennas like dipole o j-poles.
    [ Hits: 1243 | Votes: 1 | Rating: 10.00 ]
  • Importance of noise reduction in wires antennas - An old post by John Doty about effects of noise in longwire antenna.
    [ Hits: 1534 | Votes: 0 | Rating: 0.00 ]
  • Indoor Random Wire versus Indoor Magnetic Loop - Comparison of performance between an indoor random wire versus a magnetic loop using psk31
    [ Hits: 1033 | Votes: 2 | Rating: 7.00 ]
  • Inductors used in antenna matching networks - Article about variometers, helipot inductors, roller inductors, binary switched inductors, Coil and Capstan by G3YNH
    [ Hits: 520 | Votes: 1 | Rating: 1.00 ]
  • Integrated Publishing Basics - Radio wave propagation, Principles of transmission lines, Antennas
    [ Hits: 908 | Votes: 0 | Rating: 0.00 ]
  • Interference Cancelling System - The use of interference signal cancellation has been around for some time. The idea is to use an auxiliary antenna almost any random length of wire in addition to the main receiving antenna
    [ Hits: 1712 | Votes: 1 | Rating: 3.00 ]
  • J-Pole theory  pop - The J-Pole antenna is an omnidirectional antenna that can be used for base, mobile and field day stations. It does not need a ground plane, radials or a complicated matching system. The J-Pole can be cheaply, simply and quickly constructed using a variety of techniques, some of which are discussed in this article.
    [ Hits: 29759 | Votes: 25 | Rating: 6.74 ]
  • K-FACTOR Table & Chart - Determine the K-Factor used as a multiplier when constructing half-wave antennas.
    [ Hits: 2970 | Votes: 42 | Rating: 4.02 ]
  • Large Antenna in a fixed direction? - If your antenna is fixed in one direction, you will notice that your antenna works perfectly only during fall and spring.
    [ Hits: 236 | Votes: 0 | Rating: 0.00 ]
  • Les antennes: antenna theory - A basic antenna theory with final quiz in french
    [ Hits: 269 | Votes: 0 | Rating: 0.00 ]
  • Link-Coupled Antenna Tuners - W4RNL tutorial on on inductively coupled (link-coupled) antenna tuners
    [ Hits: 2538 | Votes: 2 | Rating: 5.50 ]
  • Loading inductors in mobile antennas - Mobile antennas, loading coil current, and loaded antennas. efficiency and electrical rules. Loading inductors used in mobile HF antennas.
    [ Hits: 4082 | Votes: 5 | Rating: 5.00 ]
  • Local QRM reduction - It is not always possible to tackle the sources of local QRM. What remains is trying to reduce the noise level by means of your antenna system. Learn how to reduce QRM and understand how cancell noises by PA0SIM
    [ Hits: 639 | Votes: 0 | Rating: 0.00 ]
  • Log Periodic vs Yagi Antenna - Article on Yagi and Log periodic antennas by Tom, K1JJ
    [ Hits: 357 | Votes: 1 | Rating: 5.00 ]
  • Loop Antenna Basics - Loop Antenna Basics and Regulatory Compliance for Short-Range Radio
    [ Hits: 676 | Votes: 0 | Rating: 0.00 ]
  • Low Noise Antenna Connection - Reducing noise to your antenna can gain your aerial performance, learn how.
    [ Hits: 7331 | Votes: 2 | Rating: 6.00 ]
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