User Manual

System Description NOTCHCELL Repeater
data modem. Remote operation can be performed either via CDMA net.
To be able to control many R-TRON NOTCHCELL repeaters in common, there is a Sprint EMS center.
R-TRON NOTCHCELL Repeaters work as bi-directional amplifiers.
A repeater receives, amplifies, and retransmits signals downlink and uplink simultaneously, i.e. from the base
station via the repeater to the mobile stations and from the mobile stations via the repeater to the base station.
The repeater can be connected to a donor antenna directed towards the base station, and to a distributor
antenna directed towards the area to be covered. These antennas are connected to the repeater with type-N
connectors.
To prevent instability due to poor antenna isolation, R-TRON has developed NOTCHCELL Repeater. R-TRON
NOTCHCELL Repeaters become clear of having superiority over the other RF repeaters in the world.
The R-TRON NOTCHCELL Repeaters are controlled by powerful microprocessors. Alarm and operational
status LEDs are visible on the bottom of the repeater.
The repeater works with convection cooling without fan.
Operational parameters, such as gain, power levels, alarm condition, Automatic Level Control condition, etc.
are set using a desktop or notebook and R-TRON OMT, which communicate, locally via RS-232C cable, with
the repeater. Remote operation is performed via CDMA net.
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