Yaesu FT-991, Руководство по эксплуатации

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Page 48
FT-991 O
peraTing
M
anual
1. Press the BAND button to shown the band list, then
touch a band key corresponding to the Amateur band
on which you wish to operate.
2. Press the MODE button to show the mode list, then
select the operating mode by touching the corre-
sponding key.
A
dvice
:
By convention, LSB is used in the 7 MHz and lower
Amateur bands for SSB communication, and USB is
used on the 14 MHz and higher bands (the 10 MHz
band is used for CW and data modes only).
3. Rotate the Main Tuning Dial knob to adjust the op-
erating frequency. Alternately, you may use the UP /
DWN
scanning buttons on the
MH-31
A8J
Hand Mi-
crophone to sweep up or down the current band.
4. Press the microphone PTT (Push To Talk) switch to
begin transmission; speak into the microphone in a
normal voice level.
A
dvice
:

The “ ” indicator will light up in the LED in-
dicators area, confirming that transmission is in
progress.

When transmitting in the AM mode, set a maxi-
mum (carrier) power output of 25 Watts via
[
PROC
] displayed by pressing the
F(M-LIST)
button.
5. Adjust the microphone amplifier gain to match the
microphone and your voice level: Touch [ METER
]
on the LCD repeatedly to select the “
ALC
”.
Press and hold the PTT switch, and speak into the
microphone in a normal voice level.
In the SSB mode , touch [
MIC GAIN
] and then ad-
just MULTI knob so that the ALC meter stays within
the ALC zone of the meter (up to half scale deflec -
tion) on voice peaks.
In the AM mode
, touch [ MIC GAIN
] and then adjust
MULTI knob so that the ALC meter does not deflect
at voice peaks.
6. Release the PTT switch at the end of your transmis-
sion. The transceiver will return to the receive mode.
ssb/aM M
ode
T
ransMission
ON/OFF Switch
Main Tuning Dial Knob
F(M-LIST) Button
MULTI Knob MODE Button
BAND Button