User's Manual

9
Remark: when ALC shows up flashing, it means the receiving signal power is
stronger than the system needs it. It is recommended to adjust outdoor antenna
position unless ALC alarm disappears. Or you can leave it as it is to let the booster
self-adjust automatically. However when ALC flashes, and the displayed gain is
more than 30 dB less than rated gain value, try to adjust outdoor antenna to
decrease the receiving power.
 Mobile Phone Method
You can use telephone to test signal strength near the window or on the top of the
building. The number of bars on network indicator will define approximate
strength of the received signal. Normally the roof of the building is the best place
to receive the strongest signal. As shown on the graph below, you need to test the
signal in points from A to E, and select a place with best signal strength for outdoor
installation. It is recommended to use mobile app that can display signal level,
since it is more accurate than checking signal bars.
More tips: Please try to pick up signal from cell towers that are not so busy, which
can be estimated by the population density in the area served by this tower. It’s
also recommended to avoid a cell tower near a supermarket, shopping mall,
stadium and any other public place visited by many people regularly. This will