Ssb/Am Mode Transmission - Yaesu FT-991A Operating Manual

ON/OFF Switch
1. Press the BAND button to show the band list, and
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, and
then select the operating mode by touching the cor-
responding key.
Advice:
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
crophone to scan up or down the current band.
4. Press the microphone PTT ( Push To Talk ) switch to
begin transmitting; speak into the microphone in a
normal voice level.
Advice:
 The " " indicator will light up in the TFT LED
indicators area, confirming that transmission is in
progress.
 When transmitting in the AM mode, set a maxi-
mum ( carrier ) power output of 25 Watts by press-
ing [ RF PWR ] , then rotate the MULTI knob.
FT- 991 Operating Manual

SSB/AM Mode Transmission

BAND Button
MODE Button
Hand Mi-
A8J
F ( M-LIST ) Button
MULTI Knob Main Tuning Dial Knob
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
the MULTI knob so that the ALC meter does not de-
flect on voice peaks.
 When transmitting In the AM mode, adjust the
MIC gain so that the PO meter does not deflect
when speaking.
6. Release the PTT switch at the end of the transmis-
sion. The transceiver will return to the receive mode.
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