User's Manual

Digital Repeater User Manual
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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 inside the
housing of the unit will change color from OFF to 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 digital repeater system is installed and works effectively.
One donor antenna, has been installed at the top of the roof to pick up good mobile signals from outside, and
send through a 5D-FB cable to a digital 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 affected within the area.
4 System Characteristics
4.1 Features
 Excellent out of band rejection
 Wide power supply range and low power consumption