Assembly Instructions

15
Selecting the installation direction of out door antenna.
The outdoor antenna should point in the direct ion of the tower, and it is much better to
keep line of sight.
Select opposite directions for outdoor antenna and indoor antennas. Please test the signal
quality and make sure to avoid self-oscillation first, if have to install Outdoor and Indoor
antennas in the same direction. If the directional antenna is selected, the main directional
angle should point to the tower antenna.
If the performance is poor due t o weak signals or poor phone call quality, please adjust the
direction of outdoor antenna or change its position in order to obtain the best calling effect.
The wide band repeater supports all mobile operators or different mobile systems, so
please adjust the outdoor antenna direction to have a balance between signals of different
mobile operators or various mobile systems.
Outdoor antenna installation---Notes:
Do not install the outdoor antenna during the rainy day with lightning. Please follow t he
instructions to install the outdoor antenna.
It is very important to waterproof the connectors of outdoor antenna and feeder lines.
In order to avoid interference, please note that the outdoor antenna should be far away
from objects of metal, high voltage line, RF antennas and high voltagetransformer.
Repeater is a tow-way signal amplifier. So proper isolat ion between outdoor antenna and
indoor antenna is necessary to avoid self oscillation. (About the definition for self
oscillation, take the MIC and loudspeaker for example, if it is too close for each other, it
could make loud noise.)
As shown in the below illustration, the booster amplifies the downlink signal fr om the tower
and send to the indoor antenna hereafter. If the distance between outdoor antenna and
indoor antenna is less than the required distance, the amplif ied signal R will go back from
indoor antenna to outdoor antenna. So it will lead to self oscillation and reduce the
coverage area, also the bad calling quality could happen at the same time, and the worse
is that mobile network could be influenced badly and the operators will finally come to shut
off t he repeater system.
The minimum distance between outdoor antenna and indoor antenna shall be more than
39ft; again, the direction of outdoor and indoor antennas shall be opposite. For example,