Motorola MTM700

THEORY OF OPERATION (400 MHz) MTM700 Mobile Radio / Detailed Service Manual 4.1 - 1
CHAPTER 4.1
THEORY OF OPERATION (400 MHz)
Block Diagram and Overview
The main Digital/RF Block contains the following four sections (see figure below). An overview of
these four sections is provided in the following paragraphs:
• Receiver Section
• Transmitter Section
• Frequency Generating Section (Synthesizer)
• Controller Section
Figure 1 General Block Diagram
Synthesizer
Transmitter
Receiver
Digital Block
Audio
Control Head
or
Expansion Head
MAIN BOARD
Antenna
Switch
Battery
DC
Block