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Icom IC-255A - User Manual

Icom IC-255A
31 pages
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Icom IC-255A Specifications

General IconGeneral
Frequency Range144-148 MHz
ModeFM
Power Supply13.8 V DC
Sensitivity0.5 µV for 20 dB quieting
Selectivity15 kHz/-6 dB, 30 kHz/-60 dB

Summary

Specifications Overview

General Specifications

Details general technical specifications of the transceiver.

Transmitter Specifications

Outlines output power, emission mode, and deviation characteristics.

Receiver Specifications

Covers receiving system, sensitivity, and selectivity parameters.

Installation and Setup Guide

Power Supply Requirements

Details the necessary DC power supply and precautions for connection.

Antenna Connection and Adjustment

Information on connecting the antenna and selecting the right type.

Front Panel Controls and Functions

Front Panel Controls Overview

Identifies and explains the function of each control on the front panel.

Function Switch Modes

Explains DUP-R, DUP-N, and SIM modes for frequency relationships.

Volume, Squelch, and Power Controls

How to adjust volume, squelch, and RF power.

Operating the Transceiver

VFO;Memory and Function Switch Modes

Explains dual VFOs, memory channels, and function switch modes.

Advanced VFO;Function Switch Operations

Detailed explanations of VFO/Memory and Function switch combinations.

Repeater and Split Frequency Tuning

How to configure for repeater and split frequency operations.

Memory Channel Programming and Reading

Steps for programming new frequencies into memory and recalling them.

Troubleshooting Common Issues

Power, Audio, and Sensitivity Issues

Troubleshooting common problems like no power, no sound, or low sensitivity.

System Block Diagram and Charts

Overall System Block Diagram

A comprehensive diagram illustrating the transceiver's functional blocks.

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