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G5RV Formula a simple multiband antenna
Most people think that the famous G5RV antenna was designed as a multi-band antenna, but in fact, it was actually designed as a three - half waves in phase antenna for 14 Mhz
post 13 Mar 2024
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Dipolo a "V" invertita trappolato per 40 e 80 metri
La prima parte, dal centrale o balun alla trappola, risonante sui 40 metri, che avrA' una lunghezza di circa 9,90 metri per braccio, e l'ultima parte, dalla trappola all'isolatore, che porta in risonanza tutto il dipolo sugli 80 metri, con una lunghezza di circa 7 metri per braccio queste sono lunghezze che variano da installazione a installazione
Doublet demi-onde
The half-wave dipole, commonly known as a "doublet", is a Hertz doublet whose length is theoretically equal to half the wavelength of the signal to be transmitted or received
Dipoles
It is important to erect the antenna as high as possible,certainly above surrounding roof levels
Dipolo multibanda G5RV
Questa antenna risuona sui 10-15-20-40-80
G5RV shortened
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La prima parte, dal centrale o balun alla trappola, risonante sui 40 metri, che avrA' una lunghezza di circa 9,90 metri per braccio, e l'ultima parte, dalla trappola all'isolatore, che porta in risonanza tutto il dipolo sugli 80 metri, con una lunghezza di circa 7 metri per braccio queste sono lunghezze che variano da installazione a installazione
The half-wave dipole, commonly known as a "doublet", is a Hertz doublet whose length is theoretically equal to half the wavelength of the signal to be transmitted or received
It is important to erect the antenna as high as possible,certainly above surrounding roof levels
Questa antenna risuona sui 10-15-20-40-80
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 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 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