MFJ-993B IntelliTuner Automatic Antenna Tuner
Instruction Manual
2005-2012 MFJ Enterprises, Inc.
37
Connections for FT-857 or FT-897
1.
Before connecting the MFJ-5124Y to your radio, follow the instructions in the radio’s manual for
installing the FC-30 automatic antenna tuner. For the following, use the [FUNC] key and the
[SELECT] knob on the FT-857, or use the [F] key and the [MEM/VFO CH] knob on the FT-897.
a.
Press and hold the [FUNC] or [F] key for one second to activate the Menu mode.
b.
Rotate the [SELECT] or [MEM/VFO CH] knob to recall Menu Mode #001 [EXT MENU],
and then rotate the Main Dial to change the setting to “ON” to enable extended Menu Mode.
c.
Rotate the [SELECT] or [MEM/VFO CH] knob to recall Menu Mode #020 [CAT/LIN/TUN],
and then rotate the Main Dial to change the setting to “TUNER.”
d.
Press and hold the [FUNC] or [F] key for one second to save the new setting and exit to
normal operation.
e.
Turn the radio off, then on again. Do not connect the MFJ-5124Y before changing the Menu
Mode #020 [CAT/LIN/TUN].
f.
Press and hold the [FUNC] or [F] key for one second to activate the Menu mode.
g.
Rotate the [SELECT] or [MEM/VFO CH] knob to recall Menu Mode #085 [TUNER/ATAS],
and then rotate the Main Dial to change the setting to “TUNER.”
h.
Press and hold the [FUNC] or [F] key for one second to save the new settings and exit to
normal operation.
2.
Turn the radio off. Insert the 3.5 mm stereo phone plug into the tuner’s RADIO INTERFACE
jack.
3.
Insert the 2.1 x 5.5 mm coaxial power plug into the tuner’s POWER jack.
4.
Insert the 8-pin modular plug into the MFJ-5124’s TO RADIO jack.
5.
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
.
6.
Connect the 8-pin mini DIN connector to the mating 8-pin mini DIN connector, marked as
CAT/LINEAR, on the back of the radio.
7.
Push the [POWER] button on the tuner to the
in
position and then power on the radio.
Operation for FT-857 or FT-897
The operation of the MFJ-5124Y radio interface is similar to the operation of the FC-30 described in the
Yaesu radio’s operating manual.
1.
Press the [FUNC] or [F] key, then rotate the [SELECT] or [MEM/VFO CH] knob to recall Multi
Function Row “k” [TUNE, DOWN, UP].
2.
Press the [A](TUNE) key on the radio to turn the external tuner function on; the “TUNE” or
“TUNR” icon will appear in the radio’s display.
3.
Press and hold the [A](TUNE) key on the radio to begin automatic tuning. The radio will
automatically transmit a low-power carrier and start the tuning process. Press the [A](TUNE)
key again to cancel tuning in progress. When tuning is completed, the radio will stop transmitting
and you will be ready for operation on this frequency.
Note the [TUNE] button on the tuner will not operate the MFJ-5124Y Yaesu radio interface.
