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FD4 FD3 Windom antenne
A special form of a Windom antenna is a FD4 from Fritzel. That is a wire of half a wavelength on the lowest frequency. The antenna is fed at a third of its length with a suitable HF transformer and coaxial cable
post 26 Jan 2024
Antenna Multibands Links →
Dickerdipol antenna multibands with balun
The 5 radiating wires are spread to 1.2 m. with un balun 1:4
Dipolo acortado
The calculation of the linear load is made by adding 30% to 30% removed from the irradiator, the dimensions being as follows, Total length of the irradiator: 5, 51 meters Length of each linear load: 1.54 meters
Dipolo HF 80m - 60m - 30m
Ho deciso di costruire un dipolo che mi permettesse di operare sulle gamme 80m-60m e 30m
Dipolo multibanda G5RV
Questa antenna risuona sui 10-15-20-40-80, il tratto di discesa in piattina deve essere il più lontano possibile da parti metalliche
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The 5 radiating wires are spread to 1.2 m. with un balun 1:4
The calculation of the linear load is made by adding 30% to 30% removed from the irradiator, the dimensions being as follows, Total length of the irradiator: 5, 51 meters Length of each linear load: 1.54 meters
Ho deciso di costruire un dipolo che mi permettesse di operare sulle gamme 80m-60m e 30m
Questa antenna risuona sui 10-15-20-40-80, il tratto di discesa in piattina deve essere il più lontano possibile da parti metalliche
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
Build a Three-Way Antenna Switch and Displa To use a wireless relay to select one of two high current capacity power relays
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 factor