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A 3.5-7 Mhz hybrid antenna that takes up little space


The occupied surface is limited to that of the roof of the house, 9 x 12 m, and this leads to a very economical realization of vertical antenna for two bands
post 24 Jan 2024
A 3.5-7 Mhz hybrid antenna that takes up little space

Antenna Vertical Links

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Antenna verticale multibanda con semidipoli
This type of antenna, because of the length limitation of the support, can satisfy the need of three bands: 14, 21 and 28 MHz a fourth conductor could find a place on the support in the future

Vertical 75/80 mt
Una verticale ad un quarto d'onda accorciata,di estrerma facilita'

Dual band wire vertical
You can make this antenna with as many vertical radiators as you have room for, and use a variety of insulating materials

Antenne verticale Ground Plane
Is an application of the Marconi antenna whose radiating element, vertical, has an electrical length equal to one quarter of the working wavelength


Linear-loaded-short-dipole-21mhz

Linear loaded short dipole 21Mhz For my amateur radio activities on the HF bands I only have a 3.6 m wide balcony available for antennas. After some study I decided to experiment with a shortened dipole for the 15 m band

Rx antennas 4Square Rx Vertical Array

Rx antennas 4Square Rx Vertical Array My frequency design of 1.825 MHz a 90 degrees line would be 33,70 metersinstead of the previously calculated 33,27 m

Atu balanced feeder antenna system

Atu balanced feeder antenna system An ATU has the advantage of bringing the feeder-antenna system to resonance, act as a band pass filter both on receive and transmit and a low SWR