To Next Page

To Previous Page

Section 10: i

6881091C63-F

Section 10: UHF Band 2 (450–512/520 MHz) 25–40W

Bipolar Service Information

Table of Contents

Chapter 1 Model Charts and Technical Specifications

1.0 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar Model Charts .................10:1-1

1.1 CDM Series Model Chart ..........................................................................10:1-1

1.2 PRO Series Model Chart...........................................................................10:1-2

2.0 Technical Specifications .................................................................................10:1-2

Chapter 2 Theory of Operation

1.0 Introduction.....................................................................................................10:2-1

2.0 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar Receiver Front-End .......10:2-1

2.1 Receiver Front-End ...................................................................................10:2-1

2.2 Front-End Bandpass Filters and Pre-Amplifier..........................................10:2-2

2.3 First Mixer and High Intermediate Frequency (IF).....................................10:2-2

2.4 Low Intermediate Frequency (IF) and Receiver Back-End .......................10:2-2

3.0 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar Transmitter Power

Amplifier (PA) 40W .........................................................................................10:2-3

3.1 Power Controlled Stage ............................................................................10:2-3

3.2 Pre-Driver Stage........................................................................................10:2-4

3.3 Driver Stage ..............................................................................................10:2-4

3.4 Final Stage ................................................................................................10:2-4

3.5 Bi-directional Coupler................................................................................10:2-4

3.6 Antenna Switch .........................................................................................10:2-4

3.7 Harmonic Filter..........................................................................................10:2-5

3.8 Power Control............................................................................................10:2-5

4.0 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar Frequency Synthesis.....10:2-5

4.1 Reference Oscillator..................................................................................10:2-5

4.2 Fractional-N Synthesizer...........................................................................10:2-6

4.3 Voltage Controlled Oscillator (VCO)..........................................................10:2-7

4.4 Synthesizer Operation...............................................................................10:2-8

Chapter 3 Troubleshooting Charts

1.0 Troubleshooting Flow Chart for Receiver .......................................................10:3-1

2.0 Troubleshooting Flow Chart for 40 W Transmitter..........................................10:3-3

3.0 Troubleshooting Flow Chart for Synthesizer...................................................10:3-4

4.0 Troubleshooting Flow Chart for VCO..............................................................10:3-5

5.0 Troubleshooting Flow Chart for PassPort.......................................................10:3-6

Motorola Pro3100 Detailed Service Manual

Other manuals for Motorola Pro3100