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3.
Introduction
This CEW-P10 ~ CEW-P20 full duplex mobile communications repeater from CenRF is the perfect solution for
providing a wireless improvement in the cellular reception of a home, office, restaurant, VIP Room, apartment,
building or shopping mall, in the quickest time possible. One repeater covers 300 to 600 square meters.
It is designed to improve the call quality of an area by receiving, amplifying and re-transmitting signals of the
base station into a specified area via the server antenna of the repeater.
This repeater has Manual Gain Control (MGC) feature that enables engineers to reduce the gain of the repeater
manually if oscillation is detected or too strong input power level during installation, this will help to get the best
coverage effect without any interference back to mobile network.
And to maintain safe and specific output signal levels during the repeater’s operation, this repeater has a built-in
signal oscillation detection circuit to adjust the gain automatically so as to avoid interference to the cellular network,
also it gets color changing LED’s indicate its environmental status: the Alarm LED’s located on the front of the unit
(Alarm Low & Alarm High) will change color from green to orange or red, (depending on the input power level) if the
system detects signal oscillation in either band or, if the input signal is beyond a safe limit.
Below diagram shows how simple and fast CEW-P10 ~ CEW-P20 repeater system is installed and works
effectively
One Yagi antenna, as a donor antenna, has been installed at the top of the roof to pick up good mobile signals
from outside, and send through a 8D-FB cable to a CEW-P10 ~ CEW-P20 repeater to be amplified significantly, then
the output signals are divided into two signals by a 2way splitter, sent to two indoor omni antennas and finally
transmitted into the coverage area. Very clear phone call or high speed mobile data services are immediately
effected within the area.
