MFJ Enterprises MFJ-498 User Manual

Table of Contents
Features ............................................................................................................1
Introduction........................................................................................................2
Installation .........................................................................................................3
Power......................................................................................................3
Keying Output.........................................................................................3
Keyboard ................................................................................................3
Iambic paddle .........................................................................................3
Lithium Battery Removal and Installation ..........................................................3
LCD Contrast Adjustment..................................................................................4
Basic Operation.................................................................................................4
Keyboard Operation ..........................................................................................4
Paddle Operation...............................................................................................5
Adjusting Code: Speed, Weight, And Tone.......................................................6
Code WPM Speed (F10) ........................................................................6
Weight (W)..............................................................................................6
Sidetone Frequency (T)..........................................................................6
Message Memories ...........................................................................................7
Embedded Commands...........................................................................7
Typical Settings for a Contest............................................................................8
Code Practice Utilities .......................................................................................8
QSO Simulator........................................................................................8
FCC Exam Simulator..............................................................................8
Random Word Generator .......................................................................8
Random Code Generator .......................................................................9
Learning Code with the Random Code Generator ............................................9
Teaching Code .......................................................................................9
Entering Commands..........................................................................................10

MFJ Enterprises MFJ-498 Specifications

General

Manufacturer	MFJ Enterprises
Model	MFJ-498
Category	Radio Communication Code Keyers & Keys
Memory	Yes
Power Supply	9V Battery or External Power
Connector	3.5mm

Summary

Features

Core Device Features

Describes memories, type-ahead buffer, iambic keyer, and adjustable parameters.

Practice and Training Utilities

Covers Morse code trainer, QSO, FCC exam, and word generators.

Installation Guide

Power and Output Connections

Details power supply, keying output, and paddle connections.

Keyboard Setup

Explains keyboard compatibility and connection.

Basic Operation and Display

LCD Contrast Adjustment

How to adjust the contrast and viewing angle of the LCD.

Keyboard Usage

Guide on using the keyboard for typing and word breaks.

Function Keys and Modes

Prosigns and Message Memories

Using function keys for prosigns and message storage/recall.

Command and Speed Control

Accessing command mode and adjusting code speed.

Adjusting Code Parameters

Code WPM Speed Adjustment

Detailed explanation of setting code speed.

Setting Code Weight

Setting the dot/dash weight percentage.

Advanced Message Features

Embedded Commands in Messages

Adding special features like repeating messages within memories.

Contest Settings and Utilities

Code Practice Utilities Overview

Overview of built-in utilities for learning Morse code.

QSO Simulator Practice

Practicing real contacts with the simulator.

Random Code Generator

Learning and Teaching Morse Code

Teaching Code with the Keyer

How the MFJ-498 can be used in a classroom setting.

Entering Commands

Function Key Quick Reference

Command Mode Quick Reference

Morse Code Reference Table

Warranty Information