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Extending range with better antenna system
Typical FM broadcasting antenna setups
This transmitter ships with wideband GP antenna. It is very easy to install and does not require tuning.
Better antenna systems exist and can be used to extend the range.
A simple vertical dipole antenna has a gain of 0dBd and offers almost as much gain and range as the
supplied GP antenna. However, by using several dipoles connected in muti-bay configuration gain and
range can be extended.
Two vertical dipole antennas mounted on a pole offer a gain of around 3dBd. This system doubles
effective transmitted power and gives about 30-50% extra range.
By using four vertical dipole antennas mounted on a pole the gain becomes close to 6dBd. The ERP
of this system equals 4x transmitter power. This gives about 60-100% extra range. Ideally it doubles
your range.
Keep in mind that these antenna systems require a lot more space on the tower or mast. Also, such
antenna systems tend to be quite expensive compared to the supplied solution. Observe a diagram
with 4 dipole antennas below for reference:
Chapter
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