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Page 91FT-450D OPERATION MANUAL
I
NSTALLATION
OF
O
PTIONAL
A
CCESSORIES
Operation
1. Press the
[
TUNE
]
button briefly to activate the
Automatic Antenna Tuner.
The “
” icon will appear in the display.
If the transceiver frequency is out of the amateur
band, the “ ” icon will not appear.
2. Press and hold the
[
TUNE
]
button for one second
to begin automatic tuning. The transmitter will be
engaged, and the “ ” icon will blink while tun-
ing is in progress.
3. 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.
4. To disable the Automatic Antenna Tuner, press
the [TUNE] button briefly again.
AUTOMATIC-MATCHING 200-MEMORY ANTENNA TUNER FC-40 OPERATION
Note
Ì Please connect a good earth ground to the GND terminal of FC-40.
Ì 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.
Ì It is normal to hear the sound of the relays while tuning is in progress.
Ì If the impedance cannot be matched by the FC-40 better than 2:1, and the “ ” icon will blink, the micropro-
cessor 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.
[
TUNE
]
button
93


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