MFJ-5124K/Y Radio Interface
Instruction Manual
©
2005-2006 MFJ Enterprises, Inc.
9
Connections for FT-857 or FT-897
1. Before connecting the MFJ-5124 to your radio, setup the radio’s CAT.
For following steps, 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 in 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 DIAL to change the
setting to “ON” to enable the extended Menu Mode.
c. Rotate the SELECT or MEM/VFO CH knob to recall Menu Mode
#085 [TUNER/ATAS], and then rotate the DIAL to change the
setting to “OFF.”
d. Rotate the SELECT or MEM/VFO CH knob to recall Menu Mode
#020 [CAT/LIN/TUN], and then rotate the DIAL to change the
setting to “CAT.”
e. Rotate the SELECT or MEM/VFO CH knob to recall Menu Mode
#019 [CAT RATE], and then rotate the DIAL to change the setting
to “4800bps.”
f.
Press and hold in the [FUNC] or [F] key for one second to save the
new settings and exit to normal operation.
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 CAT, on the back of the radio.
8. Push the [POWER] button on the tuner to the
in
position. When the
radio is turned on, the tuner will also power on.
9. For operating procedure, refer to “Operation for Yaesu CAT Interface”
on page 10.
MFJ-5124K/Y Radio Interface
Instruction Manual
10
©
2005-2006 MFJ Enterprises, Inc.
Connections for FT-847
1. Before connecting the MFJ-5124 to your radio, setup the radio’s CAT.
a. Press the [MENU] key momentarily to activate the Menu mode.
b. Rotate the SUB-TUNE knob to recall Menu #37 [CAT RATE],
and then rotate the MEM/VFO CH knob to change the setting to
“4800.”
c. Press the [MENU] key momentarily to save the new setting and
exit to normal operation.
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.
7. Connect the DB-9 connector to the mating DB-9 connector, marked as
CAT, on the back of the radio.
8. The FT-847 does not have a DC power connection on its CAT port.
Connect a 12 volts DC 1 amp power supply, such as the MFJ-1316, to
the MFJ-5124’s POWER jack. This will supply power to the MFJ-
5124 and the tuner.
9. See “Operation for Yaesu CAT Interface” below for operation.
Operation for Yaesu CAT Interface
The operation of the MFJ-5124Y/Y2 CAT interface is simple.
1. Turn on the radio. For the MFJ-5124Y2, turn on the tuner.
2. Press and hold the [TUNE] button on the tuner for 0.5 to 2 seconds to
start the automatic tuning. The radio will switch to AM mode, transmit
a carrier, and start the tuning process. When the tuning process is
completed, the radio will stop transmitting and return to its previous
mode. Press the [TUNE] button on the tuner briefly will place the
tuner into bypass mode.
Note the (TUNE) key on the radio will not operate the Yaesu radio’s CAT
interface.
