Yaesu FT-991A, Руководство по эксплуатации

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Page 146 FT- 991 Operating Manual
Installation of Optional Accessories
Settings Before Operating the Tuner
1. Press the MENU(SETUP) button to enter the Menu
mode.
2. Rotate the MULTI knob to select the Menu item “
141
TUNER SELECT
”.
3. Touch [ SELECT
] on the LCD, then rotate the
MULTI knob to set this Menu item to “
ATAS
”. The
“ ATAS ” icon will appear in the display.
MULTI Knob
MENU(SETUP) Button TUNE Button
81: %
670'4 ' 5 '%6 .
' 5 '%6 .
+
/ : 6 : /# 219'4
0
/+
6'40#.
4. Touch [
ENTER
] on the LCD to save the new setting.
670'4 ' 5 '%6 . #6#5
81: % ' 5 '%6 .
/ : 6 : /# 219'4
/+
5. Press the
MENU(SETUP)
button or touch [
BACK
]
on the LCD to exit to normal operation.
Tuning Operation
The tuning of the
ATAS-120A
is carried out automati-
cally.
1. Press the
TUNE button to begin automatic tuning.
The transmitter will be engaged, and the “
ATAS
”
icon will blink while tuning is in progress.
Press the TUNE button to stop the tuning in the middle
of the process.
Note:

Check the grounding and installation conditions if
“
HI-SWR
” is flashing
(tuning cannot be carried out).

As transmit signals are emitted during tuning, take
note not to interfere with any communication that is
already in progress on the frequency.
Manual Tuning
Carry out the tuning of the ATAS-120A manually.
Press the PTT switch on the microphone to transmit and
then press the
UP/DWN
button on the microphone to
adjust the antenna until the meter indicates the minimum
SWR.
The meter on the screen will automatically change to a
SWR meter.
Active-Tuning Antenna System
(
ATAS-120A
)
Operation