Preparation | 75
Aprisa SR+ User Manual 1.11.1
Remote radio
There are two main types of directional antenna that are commonly used for remote radios, Yagi and corner
reflector antennas.
Yagi Antennas
Factor
Explanation
Frequency
Often used in 350-600 MHz bands
Gain
Varies with size (typically 11 dBi to 16
dBi)
Stackable gain increase
2 Yagi antennas (+ 2.8 dB)
4 Yagi antennas (+ 5.6 dB)
Size
Range from 0.6 m to 3 m in length
Front to back ratio
Low (typically 18 to 20 dB)
It is possible to increase the gain of a Yagi antenna installation by placing two or more of them in a stack.
The relative position of the antennas is critical.
Example of stacked antennas
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