Radio Amateur
Stefan Lucka - DO2DC - JO31OR - Haltern am See

Afu Calculations


A dipole is to be shortened.

For this, shortening coils are installed to the left and right of the feed point.

Select the dot (.) As the decimal point.

What is the total length of the dipole (in meters)? 

Distance of the extension coils from the feed point (in Meter) ? 

What is the diameter of the antenna wire (mm)? 

What is the fundamental frequency of the dipole (MHz)? 


Enter your values in the given fields and then press the "Calculate" button!
Use the "Reset" button to restore the original values.


<< 1-2-3-4-5-6 >>