Posted on Saturday, June 5, 2010 • Category: Antennas
It is very easy to create a simple 1/2 wave dipole, all you need is some lengths of wire such as the core of some mains flex or even a straightened out metal coat hanger, some co-ax cable and a connector for your scanners antenna input (usually BNC or SMA).
The formula to calculate the length of the antenna is 147/frequency in MHz, this give the total length of the dipole in centimeters. For example, to make a 150MHz dipole: 147/150 = 98cm so each element of the dipole should be 49cm
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