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A vertical dipole for 7MHz and 21MHz
Getting a good antenna also for 21MHz 15 meter band, since according to the theory, a half-wave dipole for 7MHz is a 5/8 wave dipole for 21MHz
post 11 Apr 2024
Antenna 15m 21 MHz Links →
Dipolo rotativo per i 21 MHz
Realizzare un dipolo rotativo per i 21 MHz, partendo da un dipolo commerciale per i 14 MHz
Delta Quad
And an antenna of my tilting design with a winch 4 DELTA-QUAD elements for the 15m with 2 radiators supplied in phase opposition (180 °) and are spaced 1.77m apart
Dismantable Yagi for the bands 10-17m
Gain, SWR, Front/Back and Impedance for the full 450 KHz
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Realizzare un dipolo rotativo per i 21 MHz, partendo da un dipolo commerciale per i 14 MHz
And an antenna of my tilting design with a winch 4 DELTA-QUAD elements for the 15m with 2 radiators supplied in phase opposition (180 °) and are spaced 1.77m apart
Gain, SWR, Front/Back and Impedance for the full 450 KHz
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