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5 elements yagi for 15 Meters


Free space gain 10.30 dBi ( 8.16 dBd )
post 04 Apr 2024
5 elements yagi for 15 Meters

Antenna 15m 21 MHz Links

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A double dipole for 14 and 21 MHz
The strands of the 20 meter doublet are cut to 5.04 m, those of the 15 meter to 3.36 m

Antenna monobanda quad per i 15m
Antenna Quad a due elementi monobanda per i 15 metri

The Buddipole for 21 Mhz
The lengths of the elements are such that the antenna can be tuned easily


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