MOTOROLA CDM series - PRO series free download

File name CDM-PRO series Detailed Service Manual VHF 136-174 25-45W bipolar.PDF

Chapter 8: i Chapter 8: VHF (136-174 MHz) 25-45W Bipolar Service Information Table of Contents Section 1 Model Charts and Technical Specifications 1.0 VHF (136-174 MHz) 25-45W Bipolar Model Charts ...8:1-1 1.1 CDM Series Model Chart ...8:1-1 1.2 PRO Series Model Chart...8:1-2 2.0 Technical Specifications ...8:1-2 Section 2 Theory of Operation 1.0 Introduction ...8:2-1 2.0 VHF (136-174 MHz) 25-45W Bipolar Receiver Front-End...8:2-1 2.1 Receiver Front-End ...8:2-1 2.2 Front-End Bandpass Filters and Pre-Amplifier...8:2-2 2.3 First Mixer and 1st Intermediate Frequency (IF) ...8:2-2 2.4 2nd Intermediate Frequency (IF) and Receiver Back-End ...8:2-2 3.0 VHF (136-174 MHz) 25-45W Bipolar Transmitter Power Amplifier (PA) 45W..8:2-3 3.1 Power Controlled Stage ...8:2-3 3.2 Pre-Driver Stage...8:2-4 3.3 Driver Stage ...8:2-4 3.4 Final Stage ...8:2-4 3.5 Directional Coupler...8:2-4 3.6 Antenna Switch ...8:2-4 3.7 Harmonic Filter ...8:2-5 3.8 Power Control...8:2-5 4.0 VHF (136-174 MHz) 25-45W Bipolar Frequency Synthesis ...8:2-5 4.1 Reference Oscillator...8:2-5 4.2 Fractional-N Synthesizer ...8:2-6 4.3 Voltage Controlled Oscillator (VCO)...8:2-7 4.4 Synthesizer Operation...8:2-8 Section 3 1.0 2.0 3.0 4.0 Troubleshooting Charts Troubleshooting Flow Chart for Receiver ...8:3-1 Troubleshooting Flow Chart for 45W Transmitter...