User Manual of
Dual Band Adjustable Repeater
RF37GS-PS7080
Guangzhou RFtoo Co., Ltd.
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www.rftoo.com
Section 6 Notices
1. Never Turn on the equipment until both “BS” and “MS” are connected to Antenna.
2. Always remove excessive feed lines from the equipment to donor antenna and
service antenna to minimize the cable loss.
3. Always install the donor antenna at the most available highest position and keep
distance from the service antenna to maximize the isolation between each other.
The vertical distance between donor and service antenna should be more than 3
meters.
4. Certain isolation between donor antenna and service antenna are required to avoid
self-oscillation. In case self-oscillation happens, reposition is required for the
antennas.
5. The donor antenna must be placed at least 2 meters away from other antennas on
the same site.
6. All feed line connections must be waterproofed.
Self-oscillation
: During the walk test, if handheld indicates there is signal but no
communication, this often means self-oscillation occurs. Check the Alarm indicator, if it is
red, this means the donor signal is too strong or antenna isolation is insufficient. Adjust the
downlink attenuation, if the red indicator disappears, then this means the donor signal is
too strong. If the red indicator does not disappear, or the red indicator disappears only if
both uplink and downlink ATT switches are on, this indicates that there is no sufficient
isolation between the donor antenna and service antennas.
