MFJ 462B MultiReader User Manual

Table of Contents:
MFJ-462B MultiReader™.....................................................................................................................2
Specifications ...........................................................................................................................2
Connections..............................................................................................................................2
Power ..........................................................................................................................2
Printer..........................................................................................................................2
Audio...........................................................................................................................2
Straight Key.................................................................................................................2
Jumpers .......................................................................................................................2
Basic Operation........................................................................................................................3
Menu Operation........................................................................................................................3
Main Menu...............................................................................................................................4
Signal Setup.................................................................................................................4
Baud Rate Setup ..........................................................................................................5
Printer Setup................................................................................................................5
Ram Setup ...................................................................................................................5
Reverse Setup ..............................................................................................................6
Practice Key.................................................................................................................6
Radio Tuning............................................................................................................................6
CW..............................................................................................................................6
RTTY/ASCII/AMTOR FEC........................................................................................7
CW Abbreviations....................................................................................................................7
Technical Assistance.................................................................................................................7
MFJ-462B Schematic Diagram.................................................................................................8

MFJ 462B MultiReader Specifications

General

Brand	MFJ
Model	462B MultiReader
Category	Media Converter
Language	English

Summary

Specifications

Supported Modes

Lists the supported operating modes: CW, RTTY, ASCII, AMTOR FEC.

Frequency Shifts

Defines the frequency shifts for RTTY, ASCII, and AMTOR FEC modes.

Mark Frequencies & Baud Rates

Details mark frequencies for RTTY and specified baud rates for RTTY and ASCII.

Printer and Memory Features

Mentions printer compatibility and the 8000-character volatile RAM for messages.

Connections

Power Input

Specifies the required 12 VDC power supply and connector type.

Peripheral Ports

Describes the DB-25 printer port and the 3.5mm audio input jack.

CW Hand Key Input

Details connecting a hand key to the 3.5mm jack for CW code practice.

RTTY Frequency Jumpers

Explains jumper settings (J6, J7, J8) for US or European RTTY frequency shifts.

Basic Operation

Powering On and Initial Display

Guides powering on the unit, LED indicators, and the initial sign-on message.

Signal Tuning and Decoding

Explains selecting signal type, baud rate, and tuning for proper decoding.

Menu Operation

Main Menu Options Overview

Lists the six main menu options: SIGNAL SETUP, BAUD RATE SETUP, etc.

Navigating Menus and Sub-menus

Describes using the OPTION and SELECT buttons to navigate menu items.

Example: RTTY Setup Process

Illustrates setting up for RTTY decoding by navigating through menu options.

Signal Setup Menu

Signal Type Selection

Allows choosing the signal type to decode: CW, RTTY 170/425/850, ASCII, AMTOR FEC.

Starting and Exiting Decoding

Explains how to initiate signal decoding and return to sub-menus.

Baud Rate Adjustment for RTTY

Suggests switching to BAUD RATE SETUP for RTTY decoding issues.

Baud Rate Setup Menu

Selecting RTTY Baud Rates

Allows choosing the baud rate for RTTY signals (45, 50, 57, 75, 100 BAUD).

Printer Setup Menu

Enabling/Disabling Printer Output

Controls printing of received text to an EPSON compatible printer.

RAM Setup Menu

RAM Buffer Management

Covers viewing, scrolling, printing, and clearing data stored in RAM.

Reverse Setup Menu

Reverse Mode Configuration

Enables or disables the REVERSE mode for RTTY, ASCII, AMTOR FEC signals.

Practice Key Menu

CW Practice Mode Activation

Enables or disables the practice mode for the CW hand key.

Radio Tuning Guide

Optimal CW Tuning

Guides tuning for CW reception and adjusting the THRESHOLD control.

RTTY/ASCII/AMTOR FEC Tuning

Explains tuning for RTTY/ASCII/AMTOR FEC signals and tone settings.

CW Abbreviations Reference

Common CW Text Shortcuts

Lists common abbreviations used in CW communication for quick reference.

Technical Assistance

Support Contact Information

Provides contact details for MFJ Technical Service and factory support.

MFJ-462B Schematic Diagram

MFJ-462B Schematic Diagram