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MTS 2 and MTS 4 Installation, Configuration and Basic Service Manual
Post Filter
The Post Filter supports non-duplexed configurations and incorporates a DPM.
Cavity Combiners
There are two types of Cavity Combiner (CC) available:
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Minimum channel spacing of the TX channels is 150 kHz while the recommended channel spacing is 250 kHz.
Hybrid Combiner
The Hybrid Combiner (HC) combines up to two transmitters, and covers a frequency
range of 350 MHz to 470 MHz.
The combiner has no limitations in respect to channel spacing of the TX channels. However for
frequency planning and interference reasons, at least 50 kHz is recommended.
Rx Splitter
The RX splitter is a passive device, receiving the signal from the Expansion Out connector of the Duplexer/Pre-
selector in the MTS 4 Prime Cabinet and then distributes it to the Base Radios in the MTS 4 Expansion Cabinet.
Site Controller
The Site Controller (SC) controls resources within the base station, including assignment of frequencies
and slots to mobile stations. The Site Controller incorporates a Global Positioning System (GPS),
which receives signals that are used to develop high-precision system timing signals.
The Site Controller communicates with the Base Radio(s) through the 100Base-T Ethernet interface.
It also communicates with the network through an X.21 or E1 link.
6802800U74-N September 2009
A Post Filter is only available for the MTS 4 as the MTS 2 does not support
non-duplexed configurations.
Auto Tune Cavity Combiners (ATCC)
Manual Tune Cavity Combiners (MTCC)
MTCCs are functionally the same as ATCCs except that they are tuned
manually instead of electronically.
MTS 2 does not support Cavity Combiners.
Post Filter
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