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Antenna Rombica
The name rhombic antenna comes from the fact that it is made up of four conductors, in the form of wires
post 14 Feb 2024
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Building short trap dipole
a QST article for a short 40, 80 and 160 meter trap dipole, I decided to pursue construction of this antenna, and bend the 160 meter end wire, if necessary to fit into the yard
Antena para 40 e 80 metros tipo W3DZZ
This antenna is equivalent to a simple dipole in 40 meters, since the traps are equivalent to an insulator
Three Double-Extended Zepps
The antenna can also be powered with a 300 ohm TV two-wire line, but it is preferable that the power supply is via a stub
Windom
Adattare l'impedenza della discesa a 50 ohm con il valore tipico di questa antenna, che sia aggira intorno ai 300 ohm
Dual band Antenna 80/40 loaded coil inverted V
Antenna 40-80m, inverter "V" SWR results are quite good at 3.799
161
a QST article for a short 40, 80 and 160 meter trap dipole, I decided to pursue construction of this antenna, and bend the 160 meter end wire, if necessary to fit into the yard
This antenna is equivalent to a simple dipole in 40 meters, since the traps are equivalent to an insulator
The antenna can also be powered with a 300 ohm TV two-wire line, but it is preferable that the power supply is via a stub
Adattare l'impedenza della discesa a 50 ohm con il valore tipico di questa antenna, che sia aggira intorno ai 300 ohm
Antenna 40-80m, inverter "V" SWR results are quite good at 3.799
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