User's Manual

RBS 2308Micro RBS
5.2 Optional Hardware Units
This section describes the RBS 2308 optional hardware units.
Fan Unit
The fan unit provides addtional cooling to the RBS 2308. It is located on top of
the RBS, on the RRU. The fan is controlled by the RRU and receives power
from it.
Number of units: 0 – 1 per RRU
MCB – Multicasting Box
The multicasting box provides a single feeder interface for an external
antenna/antenna system. Under certain conditions, the multicasting option
enables the connection of two antennas/antenna systems for extension of the
cell. This configuration would expand the cell to different floors in a building
or into a tunnel.
The second antenna output on the multicasting box is normally connected to
an internal 50
load. As an alternative, a second antenna system can be
connected to the output.
The MCB units can be connected to the RRU.
Number of units: 0 – 2 per RRU
RXBP – RX Bandpass Filter (GSM 800 only)
The RXBP filters the incoming RX signal, filtering out frequencies outside the
RX spectrum in GSM 800.
Number of units: 0 – 1 per RRU
Note: The RXBP is currently available only for GSM 800.
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EN/LZT 720 0327/3 Uen R1A