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L'antenne Hertz Conrad Windom
The Hertz antenna, known in the USA under the name of Windom, is a multiband wire antenna made up of a horizontal radiating element of lambda / 2 length and fed at one third of its length by a single feeder wire
post 02 Feb 2024
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A multi-band inverted-V dipole for portable operation
This form of inverted-V allows multi-band operation with one antennafrom portable locations
A Small Garden Antenna
Spacers made from glass fibre sheet cut into strips was used, each 6 inches long. The parallel antenna wires are secured with wire wraps
All band dipole Mk2
The All Band HF Doublet is often referred to as a random length dipole as it is generally as long as the available space within reason, but here are a couple of limitations to the ultimate dipole length
Improvement of a long wire antenna
Spectacular noise reduction thanks to this balun, which is very simple to make using drawer bottoms
Extended Double Zepp Antenna
Install a 4:1 current balun on the end of the 450 ohm latter line stub
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This form of inverted-V allows multi-band operation with one antennafrom portable locations
Spacers made from glass fibre sheet cut into strips was used, each 6 inches long. The parallel antenna wires are secured with wire wraps
The All Band HF Doublet is often referred to as a random length dipole as it is generally as long as the available space within reason, but here are a couple of limitations to the ultimate dipole length
Spectacular noise reduction thanks to this balun, which is very simple to make using drawer bottoms
Install a 4:1 current balun on the end of the 450 ohm latter line stub
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