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30m Projects - Antennas

Click to enlargeDipolo Rotativo per 30/40 Mt da IK4DCS
Dopo aver fatto la verticale per 30/40 mt,e considerandone l'ottimo funzionamento, ho voluto riprendere il discorso del dipolo direttivo, gi visto all'inizio di questa autocostruzione.
http://digilander.libero.it/ik4dcs/dipolo3040.html

Click to enlargeMagnetic loop by F5SWN
The magnetic loop, thus named by the use of the magnetic component of the electromagnetic field, is a parallel circuit LC. The antenna is feeded using a coupling loop or a gamma, located opposite to the capacitor.
https://www.f5swn.fr/en/?Downtown-ham/Magnetic-loop

Click to enlargeMagnetic Loop Antenna by 7N3WVM
Although a magnetic loop antenna is very compact, its efficiency is close to a half-wavelength dipole if carefully built. The key point is to make the loop element with material of low ohmic resistance.
http://www.qsl.net/7n3wvm/mag-loop.html

KClick to enlargeUne antenne verticale 10/14MHz trappe coaxiale de F6GLZ
Cet article traite plutt de la manire de construire une trappe coaxiale pour une antenne verticale.
https://jclaudegerwill.wordpress.com/2018/03/23/une-antenne-verticale-10-14mhz-a-trappe-coaxiale/


Creation date : 12/08/2007 @ 19:30
Last update : 26/09/2018 @ 18:28
Category : 30m Projects
Page read 17179 times


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