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A Receiving Loop for Long Waves
One major problem receiving long waves e.g. 137 kHz ham band is the presence of local noise sources
post 22 Mar 2024
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La antena de cuadro o Magnetic Loop
The first antenna of this type that I made, was something similar to a frame antenna similar to those used by the old AM radio
Loop 1.5-30 MHz with preamplifier
The range of 2.7 to 7.3 MHz. The variable tuning capacitor is a 3 recovery air cages on an old tube radio receiver
Loop Magnetica per i 144 mhz
Ideale per il mobile, radio cluster, beacon VHF
160
The first antenna of this type that I made, was something similar to a frame antenna similar to those used by the old AM radio
The range of 2.7 to 7.3 MHz. The variable tuning capacitor is a 3 recovery air cages on an old tube radio receiver
Ideale per il mobile, radio cluster, beacon VHF
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