Product Description Part 2

RBS 210 6 and RBS 2206 Radio Configurations
GSM 1800 Uplink: 1710 – 1785 MHz
Downlink: 1805 – 1880 MHz
GSM 1900 Uplink: 1850 – 1910 MHz
Downlink: 1930 – 1990 MHz
These frequency bands are supported by the configurations described in th is
document.
5 Basic Configurations
The GSM 800, GSM 900, GSM 1800 and GSM 1900 configurat ions meet the
GSM requirements, except where otherwise stated.
The cap acity of a configuration is defined at the TX and RX antenna reference
points at the RBS border. There is an X close to every reference point in the
following figures. The RBS border is not included in the figu res.
The equivalent output power with SW power boost (TX diversity) configured
is the origina l output power specified for the basic configuration increased by
typically 3 dB, if separate TX antennas are used. The configurations that
support SW po wer boost are listed in Section 6.3 on page 49.
Functional views of radio signal paths for various configurations are s hown in
Figure 4 on page 8 up to and including Figure 21 on page 40. Only components
necessa ry to illustrate the configuration are shown.
In some configurations, the radio signal paths can differ depending on where in
the cabinet the basic configuration is used. The figures show fully-equipped
cabinets with two or three BTSs, that is two or three basic configurations are
shown in the same figu re. These are different physical implementations of the
same basic configuration, not different configurations. The second BTS is drawn
with dotted lines to s how how an SCC in a f ully-equipped cabi net is connected.
5.1 dTRU Topology
Configuration of Hybr id Combiner
The dTRU can be configured with or without the hybrid combiner, using two
external cables.
Later versions of the dT RU do not use external hybrid cables, s ee Figure 5 on
page 9.
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EN/LZT 720 0318 Uen R5A