Motorola Radius Cm200 Cm300 Pm400 Detailed 6881098c00 A Manual

CM200/CM300/PM400
Radios
UHF3 (465-495 MHz) 25-40 W
Service Information
Issue: November, 2007
M 

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Computer Software Copyrights
The Motorola products described in this manual may include copyrighted Motorola computer programs stored 
in semiconductor memories or other media. Laws in the United States and other countries preserve for 
Motorola certain exclusive rights for copyrighted computer programs, including the exclusive right to copy or 
reproduce in any form, the copyrighted computer program. Accordingly, any copyrighted Motorola computer 
programs contained in the Motorola products described...

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Table of Contents
Chapter 1MODEL CHART AND TECHNICAL SPECIFICATIONS
1.0 PM400 Model Chart ............................................................................................. 1-1
2.0 Technical Specifications ...................................................................................... 1-2
Chapter 2THEORY OF OPERATION
1.0 Introduction .......................................................................................................... 2-1
2.0 UHF (465-495 MHz) Receiver...

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9.0 Receive Audio Circuits....................................................................................... 2-19
9.1 Squelch Detect .......................................................................................... 2-19
9.2 Audio Processing and Digital Volume Control ........................................... 2-20
9.3 Audio Amplification Speaker (+) Speaker (-) ............................................. 2-20
9.4 Handset Audio...

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3.0 UHF 25-40 W Band 3 PCB 8486577Z03 / Schematics ..................................... 4-31
UHF3 Interconnection  between Main Board and Power 
Amplifier Compartment  ..................................................................................... 4-31
UHF3 (465-495 MHz)  25-40 W 8486577Z03, Top  Side  ................................. 4-32
UHF3 (465-495 MHz)  25-40 W 8486577Z03, Bottom Side  ............................. 4-33
UHF3 (465-495 MHz)  25-40 W Main Circuit (Sht 1 of 2)...

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Notes 

Chapter 1
MODEL CHART AND TECHNICAL SPECIFICATIONS
1.0 PM400 Model Chart
UHF3, 25-40 W, 465-495 MHz
Model Description
AAM50SPF9AA3ANPM400 465-495 MHz, 25-40 W, 64 CH
Item Description
X PMUE2092_ PM400 Super Tanapa UHF3, 25-40 W, 64 CH
XPMUE2038_PM400 Tanapa UHF3, 25-40 W, 64 CH
X FLN3108_AN Control Head
XPMUE2038_SPM400 UHF3 Service Board
X 6881096C32 PM400 User Guide (bilingual)
XHKLN4219PM400 User Guide CDROM (bilingual)
x = Indicates one of each is required. 

1-2 MODEL CHART AND TECHNICAL SPECIFICATIONS
2.0 Technical Specifications
Data is specified for +25°C unless otherwise stated.
General
Specification UHF3
Frequency Range:465-495 MHz
Frequency Stability
(-30°C to +60°C, 25°C Ref.)±2.5 PPM
Channel Capacity:PM400 - 64
Channel Spacing: 12.5/25 kHz
Power Supply:13.6 Vdc (10.88 Vdc - 16.32 Vdc) negative Vehicle 
ground
Dimensions (L x W x H)4.65” X 6.67” X 1.73” 
(118mm X 169.5mm X 44mm)
Weight2.25 lbs (1.01 kg)
FCC Description ABZ99FT4049
Operating...

Technical Specifications1-3
Transmitter
Specification UHF2
Power Output25-40W
Conducted/Radiated 
Emissions:-26 dBm
Audio Response: (from 6 dB/
oct. Pre-Emphasis, 300 to 
3000Hz)
TIA603 and CEPT
Tx Audio Distortion < 3%
Modulation Limiting:±2.5 kHz @ 12.5 kHz
±4.0 kHz @ 20 kHz
±5.0 kHz @ 25 kHz
FM Hum and Noise: -35 [email protected] kHz
-40 dB@25 kHz
Receiver
Specification UHF2
Sensitivity (12 dB SINAD):0.35 μV @ 12.5 kHz
0.3 μV @ 25 kHz
Intermodulation: 60 [email protected] kHz 
70 dB@25 kHz 
Adjacent Channel...

1-4 MODEL CHART AND TECHNICAL SPECIFICATIONS
Notes