MFJ-939 Plug&Play IntelliTuner Automatic Antenna Tuner
Instruction Manual
2006-2015 MFJ Enterprises, Inc.
10
1.
Turn the tuner off. Set jumper JP2 to the “I” position.
2.
For IC-7000, make sure jumper JP4 inside the MFJ-939 is removed.
3.
Insert the 8-pin modular plug into the tuner’s RADIO INTERFACE jack.
4.
Important:
Make sure the DC power to the radio has been turned off. The radio does not fuse the
DC power to the tuner, and damage to the radio can occur if the interface’s power connection
comes in contact with ground.
5.
Connect the 4-pin Molex connector to the mating 4-pin Molex connector, marked as TUNER, on
the back of the Icom radio.
6.
Push the [POWER] button on the tuner to the
in
position and then power on the radio.
7.
Some Icom radios, such as the IC-706, automatically check to see if an external antenna tuner is
connected during power on. For other Icom radios, such as the IC-718, the Tuner Type menu in
the radio menu system must be enabled. Refer to your radio operating manual for accessing the
menu system and preparing the AH-4 antenna tuner operation. Use IC-718 as an example:
a.
Push [PWR] for 1 second to turn power off.
b.
While pushing and holding [SET], push [PWR] to turn power on.
c.
Push [UP] or [DN] one or more times to select TUNER.
d.
Rotate the Main Dial to select “4” for AH-4 antenna tuner.
e.
Push [PWR] for 1 second to turn power off.
f.
Push [PWR] to turn power on again.
Summary of Contents for Plug&Play Intellituner -939
Page 1: ......
