Figure 180: Low-Power Pa Functional Block Diagram; Figure 181: High-Power Pa Functional Block Diagram; Table 97: Power Amplifiers In Br-Arch-1 Architecture; Table 98: Power Amplifiers In Br-Arch-2 Architecture - Motorola MTS LiTE Installation, Configuration And Basic Service Manual

6802800U74-AN
Chapter 10: Base Radio
Power Amplifiers in BR-Arch-1 Base Radios
Power Amplifiers in BR-Arch-1 are available in both high and low power versions. High-power PAs in
400 MHz band are available on two different frequency bands. The following table contains a list of all
available PAs in BR-Arch-1 Base Radios.

Table 97: Power Amplifiers in BR-Arch-1 Architecture

MTS Band
260 MHz
400 MHz
800 MHz
900 MHz

Figure 180: Low-power PA Functional Block Diagram

PA
PA
PA IN
Forward VVA
PA IN
Forward VVA

Figure 181: High-power PA Functional Block Diagram

Power Amplifier in BR-Arch-2 Base Radios
Power Amplifiers in BR-Arch-2 are available in a single, high-power version capable of running
efficiently in low-power setting. This version comes in different frequency bands. The following table
contains a list of all available PAs in BR-Arch-2 Base Radios.

Table 98: Power Amplifiers in BR-Arch-2 Architecture

MTS Band
400 MHz
324
Power Configuration
low-power
high-power
low-power
low-power
low-power
LFM
Attenuator Splitter
LFM
LDM
Attenuator Splitter
LDM LFM
LFM
LFM
Power Configuration
high-low power
Frequency Bands
260 MHz – 275 MHz
350 MHz – 379 MHz
380 MHz – 470 MHz
380 MHz – 470 MHz
806 MHz – 870 MHz
932 MHz – 942 MHz
Forward/
Reverse
Feedback
Circulator
Coupler
Coupler
Forward/
Reverse
Feedback
Combiner
Circulator
Coupler
Coupler
Combiner
Attenuator Reverse VVA
Attenuator Reverse VVA
Frequency Bands
320 – 400 MHz
380 – 470 MHz
PA OUT
PA OUT
PA Feedback
OUT
PA Feedback
OUT