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/Monoband Yagi for 20 m
K4EAA Antenna mononband yagi for 20 m
post 17 Feb 2024
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Adattore omega match,harpina
Nel gamma match, per cancellare la reattanza induttiva introdotta dal sistema, basta aggiungere il condensatore C2
Antenna bibanda 15-20mt ad " x "
Ogni semielemento e' formato da quattro sezioni telescopiche di tubo in alluminio anticorodal da 016 a 25 mm con spessore 1 o 1,5 mm
Antenna yagi 121,5 MHz a 4 elements
This 4-element antenna has been specially calculated for searches for aviation distress beacons on 121.5 MHz, relatively large gain close to 8 dBd, good front-back ratio more than 20 dB
Antenne yagi 5 elements 403 MHz
This antenna was developed for the direction finding of meteorological radio probes emitting between 400 and 406 MHz
Antenne Yagi
Lo spazio e' il mezzo di propagazione attraverso il quale l'onda si diffonde in modo ondulatorio
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Nel gamma match, per cancellare la reattanza induttiva introdotta dal sistema, basta aggiungere il condensatore C2
Ogni semielemento e' formato da quattro sezioni telescopiche di tubo in alluminio anticorodal da 016 a 25 mm con spessore 1 o 1,5 mm
This 4-element antenna has been specially calculated for searches for aviation distress beacons on 121.5 MHz, relatively large gain close to 8 dBd, good front-back ratio more than 20 dB
This antenna was developed for the direction finding of meteorological radio probes emitting between 400 and 406 MHz
Lo spazio e' il mezzo di propagazione attraverso il quale l'onda si diffonde in modo ondulatorio
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