MFJ MFJ-784B, Instruction Manual, Page: 1 / 74

MFJ-784B Instruction Manual
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Contents
Fast Start .............................................................................................................1
Before Reading This Manual.......................................................................iv
Chapter 1 Introduction.....................................................................1-1
Introduction to DSP.........................................................................................1-2
Product Overview .............................................................................................1-3
Block Diagram ...................................................................................................1-4
Front Panel Layout...........................................................................................1-5
Back Panel Layout............................................................................................1-6
Filter Specifications .........................................................................................1-7
Unit Specifications............................................................................................1-8
General Specifications ...........................................................................1-8
Input/Output Specifications................................................................1-8
Chapter 2 Installation .......................................................................2-1
Back Panel Connections ...............................................................................2-2
Basic Connections ...........................................................................................2-3
Setting Receive Audio Level (Input Level)......................................2-4
Increasing Headphone Audio Level..................................................2-4
Passing Sidetone ..............................................................................................2-5
T/R Connection........................................................................................2-5
CW Sidetone Filter ..................................................................................2-6
DSP to TNC Connections..............................................................................2-6
Chapter 3 Operation..........................................................................3-1
Initial Operation..................................................................................................3-2
CW Operation............................................................................................3-3
SSB (and other voice modes) Operation.......................................3-4
Front Panel Description ................................................................................3-6
PWR LED .....................................................................................................3-6
Input Level LED..........................................................................................3-6
AGC Button .................................................................................................3-7
Program Button .......................................................................................3-7
Memory Button.........................................................................................3-8
Filters Switch..............................................................................................3-8
Tunable Filters Controls........................................................................3-9
Manual Notch Button.............................................................................3-10