Expansion Cabinet Rfds; Table 7-3 Mts 4 Expansion Cabinet Rf Configurations - Motorola DIMETRA MTS 2 Installation, Configuration And Basic Service Manual

MTS 2 and MTS 4 Installation, Configuration and Basic Service Manual

Expansion Cabinet RFDS

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The Expansion Cabinet uses a high-power RFDS intended for up to four high power Base Radios in addition to
the Base Radios in the MTS 4 Prime cabinet. The RFDS in the Expansion Cabinet is made up of the following:
•
•
Table 7-3 lists the RF configurations of the MTS 4 Expansion Cabinet.
In Table 7-3, Low Power is valid for the UHF version of the Expansion Cabinet, while High Power
is valid for both UHF and 800 MHz versions of the Expansion Cabinet.
Table 7-3 MTS 4 Expansion Cabinet RF Configurations
RF Configuration
1 – 2 BRs
TX/RX on 2 ant.
TX/RX on 2 ant., RX
on 1 ant.
TX on 2 ant., RX on
2 ant.
TX on 2 ant., RX on
3 ant.
TX/RX on 1 ant., RX
on 1 ant
TX/RX on 1 ant., RX
on 2 ant.
TX on 1 ant., RX on
2 ant.
TX on 1 ant., RX on
3 ant.
3 – 4 BRs
TX/RX on 2 ant.
TX/RX on 2 ant., RX
on 1 ant.
TX on 2 ant., RX on
2 ant.
TX on 2 ant., RX on
3 ant.
6802800U74-N September 2009
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Up to three RX Splitters – a passive device functioning as an extension for the Receiver
Multi Coupler function of the Duplexer/Preselector in MTS 4 to support eight Base Radios.
It is connected to the Exp Cabinet connector on the Duplexer/Preselector present in the
MTS 4 Prime Cabinet giving the right signal level for the RX-Splitter.
Cavity Combiners – combining of eight carriers on 1 TX antenna.
Max Power (W)
Low Pwr
10
10
10
10
8
8
10
10
10
10
10
10
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High Pwr
25
25
25
25
20
20
20
20
25
25
25
25
Expansion Cabinet RFDS
■ ■ ■
■
■
Cavity
RX Splitter
Combiner
1 2
1 3
1 2
1 3
1 + phasing 2
harness
1 + phasing 3
harness
1 + phasing 2
harness
1 + phasing 3
harness
2 (comb) 2
2 (comb) 3
2 (comb) 2
2 (comb) 3
7-33