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Icom ID-51E User Manual

Icom ID-51E
60 pages
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S-14914XZ-C1
March 2013
VHF/UHF TRANSCEIVER
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Icom ID-51E Specifications

General IconGeneral
BrandIcom
ModelID-51E
CategoryTransceiver
LanguageEnglish

Summary

Introduction

Caution

Ordering Parts

Repair Notes

Section 1 Specifications

General Specifications

Describes overall device characteristics and operating parameters.

Transmitter Specifications

Details performance metrics for the transmission function.

Receiver Specifications

Details performance metrics for the reception function.

Section 2 Inside Views

Logic Unit Overview

Identifies components and layout of the logic circuit board.

Main Unit Top View

Identifies components on the main circuit board's top side.

Main Unit Bottom View

Identifies components on the main circuit board's bottom side.

Section 3 Disassembly Instruction

Removing the Logic Unit

Step-by-step guide to detach the logic board assembly.

Removing the Main Unit

Step-by-step guide to detach the main circuit board.

Section 4 Circuit Description

4-1 Receive Circuits

Explains the signal path and components for receiving RF signals.

1st IF Circuits

Details the first intermediate frequency stages of the receiver.

2nd IF Circuits

Details the second intermediate frequency stages of the receiver.

4-2 Transmit Circuits

Explains the signal path and components for transmitting RF signals.

4-3 Frequency Synthesizer Circuit

Describes the generation of local oscillator signals for tuning.

4-4 Port Allocations

Lists CPU pin assignments and their corresponding functions.

Section 5 Adjustment Procedure

5-1 Preparation

Lists required test equipment, cables, and setup for adjustments.

Entering Adjustment Mode

Procedure to access the device's calibration mode.

Adjustment Mode Key Assignments

Explains controls used within the adjustment mode.

Quitting Adjustment Mode

Procedure to exit the calibration mode.

5-2 Frequency Adjustment

Steps to calibrate the radio's frequency accuracy.

5-3 Transmit Adjustment

Procedures for adjusting transmit power and current.

5-4 Receive Adjustments

Procedures for adjusting receive sensitivity and S-meter levels.

Section 6 Parts List

Section 7 Mechanical Parts

Chassis Parts

List of mechanical components specific to the radio's chassis.

Main Unit Parts

List of mechanical components for the main unit assembly.

VCO Unit Parts

List of mechanical components for the Voltage Controlled Oscillator units.

Logic Unit Parts

List of mechanical components for the logic circuit board.

Accessories

List of included items like straps and chargers.

Section 9 Board Layouts

Logic Unit Board Layouts

Visual representation of component placement on the logic board.

Main Unit Board Layouts

Visual representation of component placement on the main board.

VCO Unit Board Layouts

Visual representation of component placement on VCO boards.

Section 10 Block Diagram

Section 11 Voltage Diagram

Logic Unit Voltage Diagram

Illustrates voltage distribution and power supply lines on the logic board.

Main Unit Voltage Diagram

Illustrates voltage distribution and power supply lines on the main board.

VCO Unit Voltage Diagrams

Illustrates voltage distribution for VCO units.

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