The measurements below are for building a Double Extended Zepp Near Vertical Incident Skywave NVIS Antenna
post 17 May 2023
Antenna Calculator Links →
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
159
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