Optional Accessories; Automatic Antenna Tuner; Operation - Yaesu FT-450 Operation Manual

I
NSTALLATION OF
A
UTOMATIC
9. Turn the FT-450 over to access the topside. Con-
nect the TMP plug (marked green) from the ATU-
450 to J5402 on the MAIN Unit and connect the
other TMP plug (marked gray) from the ATU-450
to J5404 on the MAIN Unit. Secure the two co-
axial cables with the lead clamper.
TMP plug
(marked green)
Clump
10.Replace the Bottom case and Top case with 16
screws.
11. Connect the DC cable to the ~DC IN jack on the
rear panel of the FT-450. Turn on the External DC
Power Supply's POWER switch, and then turn on
the FT-450's POWER by pressing and holding the
[ POWER ( ON/OFF )] switch for one second.
[ DSP/SEL ] knob
12.Press and hold the [ F ] button for one second to
enter the Menu Mode.
The " " icon will appear in the display.
13.Rotate the [ DSP/SEL ] knob to select the Menu
Item "TUNER".
14.Press the [ DSP/SEL ] knob to enable this selected
Menu Item.
15.Rotate the [ DSP/SEL ] knob to select the desired
ATU mode.
Passes only the transmitted signal
INT ATU:
through the ATU-450.
INTRATU: Passes both transmit and receive sig-
nals through the ATU-450.
Page 88
O
PTIONAL
A T
NTENNA UNER
TMP plug
(marked gray)
[ F ] button
A
CCESSORIES
ATU-450 O
PERATION
16.Press the [ DSP/SEL ] knob to save the new set-
ting.
17.Press and hold the [ F ] button for one second to
return to normal operation.
The installation and antenna tuner setting is now com-
pleted.

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 "
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.
FT-450 O
[ TUNE ] button
" icon will blink while tun-
M