Maxus MGR-308 User Manual page 12

This cellular repeater, as a broadband amplifier, is designed to respond simultaneously to the
broadband frequencies. When installing the repeater, you should be careful in case of the following
situations.
1) If more than two service providers exist within the frequency band of the repeater to be
installed, and, if one base station is located within 30 feet, while the other stations are at several
kilometers away, the signals from the nearby station are much more dominant. So, ALC operates
automatically, and in such process, the attenuator operates at up to 24dB. For that reason, as the
signals from near station decrease the gain of the repeater, it is unavailable to get 60dB maximum
gain. Thus, in such case, the directional antenna (Yagi antenna, etc.) should be installed to the
opposite direction from the nearby station, in order to minimize the signal exchanges with the
station nearby.
2) If the outdoor antenna is close to the indoor one;
Since this equipment performs high-gain amplification, if two antennas are adjacent, the RF
signal may be feed backed and abnormal self-oscillation may occur, which may cause serious
damage to the cellular phone, at the worst, even to the base station. Therefore, you should be very
careful to avoid this. The most reliable method is to measure and check the condition with spectrum
analyzer.
3) Never install the antenna in the places where the risk of a fire exists highly, where the
equipment may come in contact with water due to leakage, or where the mobile blocker is installed.
MAXUS Technologies, Inc.
REPEATER M O D EL M G R-3 0 8
[Warnings]
Nov. 26, 2004 12