Instruction manual [PDF] (52 pages)
- Updated: 11.05.2026
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INSTRUCTION MANUAL
CAUTION: Read All Instructions Before Operating Equipment
MFJ ENTERPRISES, INC.
300 Industrial Park Road
Starkville, MS 39759
USA
Tel: 662-323-5869 Fax: 662-323-6551
COPYRIGHT
2005-2012 MFJ ENTERPRISES, INC.
C
Model MFJ-993B
VERSION 2B
DISCLAIMER
Information in this manual is designed for user purposes only and is not intended to
supersede information contained in customer regulations, technical manuals/documents,
positional handbooks, or other official publications. The copy of this manual provided to
the customer will not be updated to reflect current data.
Customers using this manual should report errors or omissions, recommendations for
improvements, or other comments to MFJ Enterprises, 300 Industrial Park Road,
Starkville, MS 39759. Phone: (662) 323-5869; FAX: (662) 323-6551. Business hours:
M-F 8-4:30 CST.
MFJ-993B IntelliTuner Automatic Antenna Tuner
Instruction Manual
2005-2012 MFJ Enterprises, Inc.
i
Contents
THE BASICS
Introduction ...................................................................................................................................... 1
Features ............................................................................................................................................ 2
Specifications ................................................................................................................................... 2
Fast Start .......................................................................................................................................... 3
Front Panel ....................................................................................................................................... 4
SWR/Wattmeter .................................................................................................................. 4
LCD Display ....................................................................................................................... 5
LCD Contrast Control ......................................................................................................... 5
ANT Button ........................................................................................................................ 5
MODE Button ..................................................................................................................... 5
C-UP and C-DN Buttons .................................................................................................... 5
L-UP and L-DN Buttons ..................................................................................................... 5
AUTO Button ..................................................................................................................... 5
TUNE Button ...................................................................................................................... 6
StickyTuneTM .......................................................................................................... 6
VOL Control ....................................................................................................................... 6
POWER Button ................................................................................................................... 6
Back Panel ....................................................................................................................................... 8
Power .................................................................................................................................. 8
Remote Port ........................................................................................................................ 8
Radio Interface .................................................................................................................... 8
Transmitter ........................................................................................................................ 11
Ground .............................................................................................................................. 11
Balanced Line ................................................................................................................... 11
Wire .................................................................................................................................. 11
Antenna 1 .......................................................................................................................... 11
Antenna 2 .......................................................................................................................... 11
Installation ..................................................................................................................................... 11
SWR/Wattmeter ............................................................................................................................. 12
THE MENUS
Main Mode Menus ......................................................................................................................... 13
Digital Wattmeter Menu ................................................................................................... 13
Power Bar Meter Menu ..................................................................................................... 13
SWR Bar Meter Menu ...................................................................................................... 14
L-Network Menu .............................................................................................................. 14
Tuner Indicators ............................................................................................................................. 15
Antenna ............................................................................................................................. 15
IntelliTune ......................................................................................................................... 15
Memory ............................................................................................................................. 15
Power Level ...................................................................................................................... 15
LC Limit ........................................................................................................................... 16
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