MFJ-991B IntelliTuner Automatic Antenna Tuner Instruction Manual
2005-2012 MFJ Enterprises, Inc.
34
Connections for FT
DX-9000 series of radios
1. Before connecting the MFJ-5124Y3 to your radio, set the maximum TUNE power of the radio as
follows:
a. On your transceiver, enter the Menu mode by pressing the [MNU] key momentarily.
b. Rotate the Main Tuning Dial knob until you see menu item [157 EXT AMP TUNING PWR]
on the transceiver’s display.
c. Rotate the [CLAR/VFO-B] knob to select 50 watts for best SWR accuracy. The TUNE
power varies with the output power level control setting, so ensure that the TUNE power is
somewhere between 20-50 watts.
d. Press and hold in the [MNU] key for two seconds to save the new setting and exit to normal
operation. If you press the [MNU] key momentarily, the new setting will not be saved.
2. Insert the 3.5 mm stereo phone plug into the MFJ-991B RADIO INTERFACE jack.
3. Connect the 3.5-mm mono plug on the MFJ-5124Y3 to the REMOTE jack on the rear panel of
the transceiver.
4. Connect a 12V 1000 mA DC source to the MFJ-991B.
5. Push the [POWER] button on the MFJ-991B to the in position. The radio may be powered on
either before or after the tuner is powered on.
Operation for FT
DX-9000 series of radios
The transceiver is controlled by the MFJ-991B. To operate:
1. Press the [TUNE] button on the MFJ-991B for ½-2 seconds to initiate the tuning process. The
radio will automatically transmit a low-power carrier and start the tuning process. When tuning is
completed, the radio will stop transmitting and you will be ready for operation on this frequency.
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