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Double Extended Zepp NVIS Antenna Calculator
The measurements below are for building a Double Extended Zepp Near Vertical Incident Skywave NVIS Antenna
post 29 Jan 2024
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Return Loss Calculator
Calculates the absolute load impedance, reflection coefficient, VSWR, return loss and mismatch loss of a load
Single Layer Air Core Inductor Design
Round wire coil with dimensions and current-sheet approximation
Sophisticated Helix Antenna Design
With matching Coax to 50 ohm<
The Quarter-wave stub
The Quarter-wave stub can be used for many purposes. If it is left with an open end it can be used as a notch filter to attenuate certain frequencies
RF-Calkulator
Wavelength calculator,resonance calculator,the ohm's law,air condensers calculator,coils calculator
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Calculates the absolute load impedance, reflection coefficient, VSWR, return loss and mismatch loss of a load
Round wire coil with dimensions and current-sheet approximation
With matching Coax to 50 ohm<
The Quarter-wave stub can be used for many purposes. If it is left with an open end it can be used as a notch filter to attenuate certain frequencies
Wavelength calculator,resonance calculator,the ohm's law,air condensers calculator,coils calculator
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
Atu balanced feeder antenna system An ATU has the advantage of bringing the feeder-antenna system to resonance, act as a band pass filter both on receive and transmit and a low SWR