MFJ-939 Plug&Play IntelliTuner Automatic Antenna Tuner
Instruction Manual
2006-2015 MFJ Enterprises, Inc.
iii
GROUNDING HINTS........................................................................................................................................25
ANTENNA SYSTEM HINTS............................................................................................................................25
Location......................................................................................................................................................25
Matching Problems.....................................................................................................................................25
Appendices ..................................................................................................................................................................27
Resetting the Tuner .............................................................................................................................................27
Factory Defaults .........................................................................................................................................27
Delete Entire Antenna Memory..................................................................................................................28
Delete Antenna Memory Bank ...................................................................................................................28
Total Reset..................................................................................................................................................28
Self Test ..............................................................................................................................................................28
Power-Down Circuit Test ...................................................................................................................................29
Relay Test ...........................................................................................................................................................30
Frequency Counter Calibration ...........................................................................................................................30
SWR Bridge Calibration .....................................................................................................................................31
Jumper Settings ...................................................................................................................................................32
IN CASE OF DIFFICULTY...............................................................................................................................33
TECHNICAL ASSISTANCE .............................................................................................................................33
LIST OF ACCESSORIES ..................................................................................................................................33
FULL 12-MONTH WARRANTY ..............................................................................................................................35
Figures
Figure 1 General Setup ...............................................................................................................................................3
Figure 2 MFJ-939 Front Panel....................................................................................................................................4
Figure 3 Button Action ...............................................................................................................................................5
Figure 4 MFJ-939 Back Panel. ...................................................................................................................................6
Figure 6 General Setup ...............................................................................................................................................8
Figure 7 Icom Interface Cable. ...................................................................................................................................9
Figure 8 Kenwood Interface Cable ...........................................................................................................................12
Figure 9 Yaesu Interface Cable (FT-100/-450/-857/-897/-950). ..............................................................................14
Figure 10 Yaesu Interface Cable (1000MP/2000/9000 series). ..................................................................................19
Figure 11 Yaesu Interface Cable (FT-2000 series).....................................................................................................21
Figure 12 Alinco Interface Cable. ..............................................................................................................................22
Figure 13 Power-On Operations. ................................................................................................................................27
Figure 14 Block Diagram ...........................................................................................................................................34
Tables
Table 1 Icom...............................................................................................................................................................9
Table 2 Kenwood......................................................................................................................................................11
Table 3 Yaesu ...........................................................................................................................................................14
Table 4 Y3 Interface .................................................................................................................................................18
Table 5 Y4 Interface .................................................................................................................................................21
Table 6 Alinco ..........................................................................................................................................................22
Table 7 Memory Resolution .....................................................................................................................................23
Table 8 Tuner Beeps.................................................................................................................................................24
Table 9 Failure Messages. ........................................................................................................................................29
Table 10 Jumper JP1 Setting ......................................................................................................................................32
Table 11 Jumper JP2 Setting ......................................................................................................................................32
Table 12 Jumper JP4 Setting ......................................................................................................................................32
Summary of Contents for Plug&Play Intellituner -939
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