Mts 2 Duplexer; Figure 7-7 Mts 2 Duplexer - Motorola DIMETRA MTS 2 Installation, Configuration And Basic Service Manual

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

MTS 2 Duplexer

The Duplexer is a Preselector with Integrated Receiver Multicoupler (RMC) and a Post Filter with
a digital power monitor (DPM) combined into one unit. These form the two bandpass filters that
make up the Duplexer; one is a receive filter and the other a transmit filter.

Figure 7-7 MTS 2 Duplexer

The duplex spacing between a transmit frequency and the corresponding receive frequency is
10 MHz, with the transmit frequency highest. This leaves a 5 MHz spacing between the lowest
possible transmit frequency and the highest possible receive frequency.
For 800 MHz, the duplex spacing between a transmit frequency and the corresponding receive
frequency is 45 MHz, and leaves a 19 MHz spacing between the lowest possible transmit
frequency and the highest possible receive frequency.
The MTS 2 Duplexer has 2 RX outputs and can handle a maximum power of 60 watts.
The receiver LNA and splitter provides multiple receive signal ports. An amplified output is
provided for connection to the other cabinet in an expansion configuration.
The digital power monitor (DPM) is a directional coupler that measures forward and reverse Power.
Power and VSWR information can be read through the CAN bus.
6802800U74-N September 2009
MTS 2 Duplexer
7-9