Users Manual Part 1

• Hybrid Combiner (HC) (MTS 2 and MTS 4 Prime Cabinet only)

• Rx Splitter (Expansion Cabinet Only)

NOTICE: The Preselector types and Duplexer types used in MTS LiTE and MTS 2 are different

from the types used in MTS 4.

1.7.1.1

Preselector

The Preselector is a bandpass filter, which allows only the receiver signals to pass. The Preselector

incorporates a Receiver Multicoupler (RMC).

For 400 MHz, the filters bandwidth is 5 MHz, and it is designed to block transmitter frequencies as

close as 5 MHz from its band edges.

Table 6: Preselector Filter Bandwidth

MTS Frequency Bandwidth Description

260 MHz 6 MHz Designed to block transmitter

frequencies as close as 6 MHz

from its band edges.

400 MHz 5 MHz Designed to block transmitter

frequencies as close as 5 MHz

from its band edges.

800 MHz 19 MHz Designed to block transmitter

frequencies as close as 19

MHz from its band edges.

900 MHz 5 MHz Designed to block transmitter

frequencies as close as 5 MHz

from its band edges.

1.7.1.2

Duplexer

The Duplexer consists of two bandpass filters. One filter allows the transmitter signal to pass, while the

other filter allows the receiver signal to pass.

The Duplexer incorporates both a Receiver Multicoupler (RMC) and a Digital Power Meter (DPM).

The following table describes filter bandwidth depending on the MTS frequency.

Table 7: Duplexer Filter Bandwidth

MTS Frequency Bandwidth Duplex Spacing

260 MHz 6 MHz Duplex spacing between a

transmitter frequency and the

corresponding receive fre-

quency is 9 MHz.

400 MHz 5 MHz Duplex spacing between a

transmitter frequency and the

corresponding receive fre-

quency is 10 MHz, with the

6802800U74-AP

Chapter 1: MTS Overview