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Icom IC-F4021T - User Manual

Icom IC-F4021T
40 pages
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SERVICE
MANUAL
UHF TRANSCEIVERS
S-14304HZ-C1
July 2006
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Icom IC-F4021T Specifications

General IconGeneral
BrandIcom
ModelIC-F4021T
CategoryTransceiver
LanguageEnglish

Summary

Introduction

Cautions

Important safety precautions to follow before operating the transceiver.

SECTION 3 DISASSEMBLY INSTRUCTIONS

SECTION 5 CIRCUIT DESCRIPTION

Receiver Circuits

Detailed explanation of the receiver circuits and their functions.

Transmitter Circuits

Detailed explanation of the transmitter circuits and their functions.

SECTION 6 ADJUSTMENT PROCEDURES

6-1 Preparation

Lists required equipment and software system requirements for adjustments.

6-2 Frequency Adjustment

Procedure for adjusting the transceiver's operating frequencies.

6-3 Transmit Adjustment

Steps to adjust output power, FM deviation, and modulation balance.

6-4 Receive Adjustment

Procedures for adjusting receive sensitivity, S-meter, and squelch.

SECTION 9 SEMICONDUCTOR INFORMATION

SECTION 11 BLOCK DIAGRAM

SECTION 12 VOLTAGE DIAGRAMS

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