# Amateur Radio:Antennas

# 2 Meter Ground Plane

The 2 meter ground plane is built on the following equation:

radiator length in inches = 234 / frequency in Mhz radials in inches = (234 / frequency in Mhz) * 1.05

The following table are the results of the above formulas:

Frequency Radiator in Feet Radiator in Inches Radials in inches 144 1.625 19.5 20.475 145 1.613793103 19.36551724 20.3337931 146 1.602739726 19.23287671 20.19452055 147 1.591836735 19.10204082 20.05714286 148 1.581081081 18.97297297 19.92162162

Note that as the frequency increases, the elements size decreases. It's better to start with longer elements and then cut them shorter as you test the SWR for you desired center frequency.