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SM-4450
Maxon SM-4450 Manuals
Manuals and User Guides for Maxon SM-4450. We have
1
Maxon SM-4450 manual available for free PDF download: Service Manual
Maxon SM-4450 Service Manual (75 pages)
UHF Synthesized Mobile
Brand:
Maxon
| Category:
Two-Way Radio
| Size: 19 MB
Table of Contents
Contents
3
General Information
5
Unpacking
5
General Descriptoin
6
Performance Specifications
7
Description of Controls
8
Front Panel Controls
8
Back Panel Connectors
9
Operation
10
Radio On/Off, Power up
10
Receiving a Call
10
Transmitting
10
Block Diagram
11
Theory of Operation
12
Receiver
12
RF Amplifier
12
First Mixer and First if Amplifier
12
Transmitter
13
Audio
13
Squelch
13
RF Driver and Power Amplifier
13
Frequency Synthesizer
14
PLL Integrated Circuit
14
Reference Oscillator
14
Dual Modulus Prescaler
14
Out-Of-Lock Detector
15
Test Equipment
16
Performance Tests
17
Transmitter Performance Tests
17
Power Output
17
Audio Response
17
Receiver Performance Tests
18
Sinad Sensitivity
18
Noise Quileting Sensitivity
18
Audio Output
18
Alignment
19
Suggested Test Equipment
19
Pre-Alignment Notes
19
PLL Alignment
20
Transmitter Alignment
21
DCS Modulation Balance Adjustment
21
Correct Adjustment
21
Incorrect Adjustment
21
Modulation Deviation Alignment
22
Maximum Capacitance Position
22
Typical Position
22
Receiver Alignment
23
Receiver Squelch Adjustment
23
Programming
24
Alignment Points
25
Transistor & IC Pinout Information
31
Wiring Diagram
36
Exploded View Parts List
40
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