6
/
11
Connect
the outdoor antenna to the booster connector marked
OUTDOOR
with 10 meters 3D-FB Coaxial
cable with N male connector
Important : Outdoor antenna installation ---Notes:
In order to avoid interference, please note that the outdoor antenna should be far away from the following
objects of metal, high-voltage line, RF antenna and high-voltage transformer.
Booster is a two-way signal Booster. So proper isolation between outdoor antenna and indoor antenna is
necessary in order to avoid self-oscillation.
The minimum distance between outdoor antenna and indoor antenna shall be more than 10 meters; again
the direction of outdoor and indoor antennas shall be opposite.
As shown in the below illustration, the booster the downlink signal
r
from 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 amplified 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 the mobile network could be influenced badly and the operators will finally come to shut
off the booster system.
If isolation can’t be achieved by the limited distance, the roof of the building or any other barriers can be
used in between to increase isolation.
Fix the donor antenna after selecting the best position, and adjust slightly its height or angles in order to
get the signals with suitable input power level and calling quality.
（
2
）
Installation of Indoor Antenna
