MFJ-993B IntelliTuner Automatic Antenna Tuner
Instruction Manual
2005-2012 MFJ Enterprises, Inc.
38
Connections for FT-950
1.
Before connecting the MFJ-5124Y to your radio, follow the instructions in the radio’s manual for
installing the FC-40 automatic antenna tuner.
a.
Press the [MENU] button momentarily to enter the Menu mode.
b.
Rotate the [SELECT] knob to select Menu item [110 TGEN EXT TUN]. Press the
[SELECT] knob momentarily to toggle the display between [110 TGEN] and [EXT TUN].
c.
Rotate the [CLAR/VFO-B] knob to change the setting to “Etu” to enable the External Tuner.
d.
Press and hold the [MENU] button for one second to save the new setting and exit to normal
operation. If you only
momentarily
press the [MENU] button, the new setting will
not
be
retained.
2.
Turn the radio off.
3.
Insert the 3.5 mm stereo phone plug into the tuner’s RADIO INTERFACE jack.
4.
Insert the 2.1 x 5.5 mm coaxial power plug into the tuner’s POWER jack.
5.
Insert the 8-pin modular plug into the MFJ-5124’s TO RADIO jack.
6.
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
.
7.
Connect the 8-pin mini DIN connector to the mating 8-pin mini DIN connector, marked as
TUNER, on the back of the radio.
8.
Push the [POWER] button on the tuner to the
in
position and then power on the radio.
Operation for FT-950
The operation of the MFJ-5124Y radio interface is similar to the operation of the FC-40 described in the
Yaesu radio’s operating manual.
1.
Press the (TUNE) button on the radio briefly to enable the external tuner function. The
“TUNER” icon will appear in the radio’s display.
2.
Press and hold the (TUNE) button on the radio for one second to begin automatic tuning. The
radio will automatically transmit a low-power carrier and start the tuning process. The “TUNER”
icon will blink while tuning is in progress. Press the (TUNE) button on the radio while tuning is
in progress to cancel the automatic tuning.
Note:
The FT-950 will not start automatic tuning when the SWR is greater than
approximately 5:1, indicated by both “TUNER” and “HI-SWR” icons blinking once
when the (TUNE) button on the radio is pressed and held for one second.
3.
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.
