2.8 Antenna Installation
Indoor communication distance is about 300 to 550 ft. using a standard 2 dB antenna. Howev- er, actual distance depends on environmental conditions as well as antenna type and position- ing.
Longer communication distances can be achieved by using an antenna with a higher gain. A table of communication ranges as a function of differing combinations of antennas (at the source and receiving ends) is displayed below.
Antenna | 24 dB | 18 dB | 11 dB omni- |
Gain at | directional | directional | directional |
either end |
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24 dB | 10 Km | 5 Km | 2 Km |
directional |
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18 dB | 5 Km | 2.5 Km | 1 Km |
directional |
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11 dB omni- | 2 Km | 1 Km | 0.5 Km |
directional |
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Note : 1. While using directional antennas, care should be taken to install and adjust the anten- na‘s direction according to the instructions of the antenna’s manufacturer. Please see the example specification for an external 24 dBi an- tenna at appendix A.
2.A user’s license may be required to use a directional antenna. Please consult your local authority for local regulations.
3.We strongly recommend that you install
4.Omnidirectional antennas should be used when the
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