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Anntena Vertical de HF 1/4 lambda 20m
Here is an explanatory video on how to make a vertical antenna using a fishing rod
post 27 Apr 2024
Antenna Vertical Links →
End Feed Half Wave verticale
Per radiatore dell'EFHWA e' utilizzato un filo per impianti elettrici da 1.5 mm quadri tagliato esattamente a 9.84 mt
Fisher's Whip
Si puo' montare praticamente dappertutto,in tutti i casi possibili della nostraattivita', rende abbastanza bene ed e' facile ed economica da costruire
Four square phased verticals
The four phased verticals system . It is primarily intendend to be used on the lower bands 160m, 80m, 40m
GP for 40, 80 and 160 meters
As mast an 18 meter glass fiber mast of Spiderbeam,the system is sized to have the radiator and coil resonance at 160 meters
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Per radiatore dell'EFHWA e' utilizzato un filo per impianti elettrici da 1.5 mm quadri tagliato esattamente a 9.84 mt
Si puo' montare praticamente dappertutto,in tutti i casi possibili della nostraattivita', rende abbastanza bene ed e' facile ed economica da costruire
The four phased verticals system . It is primarily intendend to be used on the lower bands 160m, 80m, 40m
As mast an 18 meter glass fiber mast of Spiderbeam,the system is sized to have the radiator and coil resonance at 160 meters
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