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Yagi 2 elmenti per i 18 MHz

Il punto fondamentale e la spaziatura tra il dipolo e' gli elementi parassiti, infatti questa misura va a variare le caratteristiche dell'antenna
post 14 Feb 2024
Yagi 2 elmenti per i 18 MHz

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14 MHz Monobander
This antenna was designed and built in 2004. by VK1AA

14 MHz 5 el. Monobander
The end result was above all expectations as much higher gain was obtained, extremely good F / B and most importantly, the antenna now covers the entire range with a SWR that is 1: 1.10

2 elementi filare reversibile
Questa yagi ad elementi in filo di G4ZU ha due meriti che conviene, e pressoche' invisibile ed ha un costo irrilevante

2-Element-HB9CV-Beam for 2m, 6m and 10m
The Beam is a coax-fed version of the ZL-Special. The reflector is fed 225° out of phase

2-Element parasitic Yagis for the Shortwave-Bands 10m-30m
No other antenna has a better relation between gain and expense than the 2-Element-Yagi

Take off angle of horizontal antenna

Take off angle of horizontal antenna For horizontal polarization, the electric field will move sideways on a horizontal plane, while for vertical polarization it will oscillate up and down on a vertical plane

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

Calculo da Antena Bazooka

Calculo da Antena Bazooka A double bazooka antenna is a combination that has a complete coaxial wave multiplied by its velocity factor and a total end-to-end length of 1/4 wave for each side affected by another driver shortening facto