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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 17 May 2023


Antenna Calculator Links

159



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Calculates the absolute load impedance, reflection coefficient, VSWR, return loss and mismatch loss of a load

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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

10 m| 12 m| 15 m|
17 m 20 m| 2 m|
23 cm| 30 m| 40 m
6 m| 70 cm| 60 m| 80 m| 160 m| 136 khz| 630 m|
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