User's Manual

User Manual
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8. Installation of antennas and cable
8.1. Installation of donor antenna
The Booster’s main function is to improve weak RF signals of an area. A simple formula: Input power+ Gain=
Output power. The signal strength from the outdoor antenna directly affects the efficiency of the indoor
coverage. It is very important to choose the donor antenna location in order to get the best signals.
 Testing the signal strength received from donor antenna mounted in site by mobile phone:
z The mobile phone shall display full bar signals in location where the donor antenna is installed
z The phone calls or data transmission shall be smooth and stable by 3 times testing in location
where the donor antenna is to be installed
z As shown from the above illustration, testing the signals from A to E, and select a best place that
displays full bar signals.
z The wide band Booster supports all mobile operators, so please adjust the donor antenna
direction to have balance between signals of different mobile operators.
 Donor antenna installation ---Notes:
z It is a must that the waterproof shall be done to connectors of donor antenna and feeder lines.
z Booster is a two-way signal amplifier. So proper isolation between donor antenna and server
antenna is necessary in order to avoid self-oscillation. About the definition for self-oscillation,
take MIC and loudspeaker for example; if it is too close for each other, it could make big noise.
So the Booster can only run smoothly if alarm LED always remains GREEN color.
z If isolation can’t be achieved by the limited distance, the roof of the building, walls or any other
barriers can be used between antennas to increase isolation.