Operation Manual

Page 131FT
DX
3000 OperaTing Manual
InstallatIon of optIonal accessorIes
Setup the FT
DX
3000
The optional
FC-40
Automatic Antenna Tuner provides automatic tuning of a coaxial line to present nominal 50-ohm
impedance to the
FT
DX
3000
’s ANT jack.
Before operation can begin, you must instruct the
FT
DX
3000
microprocessor that the
FC-40
is being used. This is done
using the Menu Mode:
Fc-40 eXteRnAl AUtoMAtic AntennA tUneR (FoR WiRe AntennA)
1. Press the
[
MENU
]
button to enter the Menu mode.
2. Rotate the
[
CLAR/VFO-B
]
knob (or press the
p
/
q
button) to select the Menu Item “
179 TUNER SE-
LECT
”.
3. Press the
[
SELECT
]
button, then rotate the
[
CLAR/
VFO-B
]
knob (or press the
p
/
q
button) to select
“
EXTERNAL
”.
4. Press the
[
SELECT
]
button.
5. Press the
[
MENU
]
button to save the new setting and
exit to normal operation.
Operation
1. Press the
[
TUNE
]
button briefly to activate the
Automatic Antenna Tuner.
2. The “
TUNER
” icon will appear in the TFT display.
3. Press and hold the
[
TUNE
]
button for one second
to begin automatic tuning. The transmitter will be
engaged, and the “
TUNER
” icon will blink while
tuning is in progress.
4. Tuning will stop automatically when a low SWR
is achieved. You may Press and hold the
[
TUNE
]
button for one second while tuning is in progress, to
cancel the automatic tuning.
5. To disable the Automatic Antenna Tuner, press the
[
TUNE
]
buttonbrieyagain.
[
CLAR/VFO-B
]
Knob
[
MENU
]
Button
[
TUNE
]
Button
[
SELECT
]
Button
[
p
/
q
]
Button
note:
r
Please connect a good earth ground to the GND
terminal of
FC-40
.
r
The carrier signal transmits continuously while
tuning is in progress. Please monitor the operating
frequency before beginning the tuning process. Be
sure you are not interfering with others who may
already be using the frequency.
r
It is normal to hear the sound of the relays while
tuning is in progress.
r
If the impedance cannot be matched by the
FC-40
better than 2:1, and the “
TUNER
” icon blinks, the
microprocessor will not retain the tuning data for that
frequency, as the
FC-40
presumes that you will want
to adjust or repair your antenna system to correct the
high SWR condition.