ICOM IC-4E 430MHz FM Transceiver Instruction Manual

Introduction

The ICOM IC-4E is a synthesized handheld transceiver operating on the 430 MHz FM band. This compact and lightweight device offers 2000 channels and features dual power levels (1.5W HIGH, 0.15W LOW) for versatile communication. Various power packs and accessories are available to suit different user needs, enhancing its utility for outdoor, mobile, or fixed applications. The transceiver is equipped with a highly efficient flexible antenna, with the option to connect external antennas.

Specifications Overview

This section details the general specifications of the IC-4E, including its semiconductor components, frequency coverage (430.000 ~ 439.995 MHz), frequency resolution (5 KHz steps, 2000 channels), and operating temperature range (-10°C to 60°C). It also outlines power supply requirements, current drain for transmitting and receiving, and physical dimensions. Transmitter specifications include output power, modulation system, and deviation, while receiver specifications cover sensitivity, selectivity, and audio output power.

Accessories and Operation

The manual lists essential accessories included with the transceiver, such as the IC-BP3 power pack, BC-25E wall charger, flexible antenna, and belt clip. It provides detailed instructions on battery installation and charging procedures for both Nickel-Cadmium and alkaline power packs. Guidance is also given for optimal use in various environments, including outdoor, in-car, and fixed installations, along with instructions for attaching accessories like the hand strap and belt clip.

Control Functions and Modes

A comprehensive explanation of the IC-4E's control functions is provided, detailing the top panel controls such as the antenna connector, transmit/battery indicator, squelch control, volume control, and thumbwheel switches for frequency selection. It also explains the operation of the power switch, RF power switch, and duplex/simplex switches, including how to set up for repeater or simplex operation. The manual clarifies the function of the tone call switch for repeater access.

Troubleshooting and Technical Details

For user convenience, a troubleshooting guide is included to help identify and resolve common issues. The manual also provides detailed circuit descriptions for the receiver, transmitter, and PLL circuits, along with block diagrams and transistor voltage charts for both the main and PLL units. This technical information is valuable for understanding the internal workings and for advanced users or technicians.

Optional Accessories

ICOM offers a range of optional accessories to expand the functionality of the IC-4E. These include various battery chargers (BC-30), different power packs (IC-BP2, IC-BP4, IC-BP5) offering varying capacities and output power, a cigarette lighter recharger (IC-CP1), and a speaker/microphone combination unit (IC-HM9).

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