How to Use the Calculator
First, input the centre frequency and units (Metres, Feet or Wavelengths)
for calculation in the box named Input Area 1. Then press Calculate.
The calculator then computes the Maximum and Minimum antenna allowable width of the antenna. If you have a large room it is recommended that you use the Indoor #1 calculator, on this site, that does not use loading coils.
Then select the width of your antenna and press Get Output. Check that the length of Wires 2,3 are
suitable for your room width.