Ssb/Am Mode Transmission (Let's Look At The Transmitter - Yaesu FTDX-9000D Operation Manual

SSB/AM M
1. Selecting the Operating Mode
The operating mode is selected
using the MODE switches
(# ) to the left of the Main
Tuning Dial knob (#
VFO (A or B) to which the selec-
tion is applied is selected by
pressing the A or B switch
above the MODE keys. Press
the A or B key to select the
desired VFO, then press the
LSB or USB key to select one of the SSB modes.
For AM operation, press the AM key.
Quick Point
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).
2. Rotate the Main Tuning Dial knob to adjust the
operating frequency. Alternatively, if using the optional
MD-200 Desktop Microphone, you may use the
A8X
Up/Down scanning buttons to sweep up or down the
current band.
Advice
Be sure to verify that the microphone you are using is enabled for
operation via the Menu. There are two microphone jacks (the front
panel's three-pin XLR ("Cannon") connector, and the rear panel's
8-pin round connector), and either jack may be chosen indepen-
dently for SSB, AM, and FM operation. See the Menu list below
for details of the associated Menu Item:
3. Press the microphone's PTT
(Push To Talk) switch to be-
gin transmission; speak into
the microphone in a normal
voice level.
H The "TX" indicator will light
up in the frequency display
area, confirming that transmission is in progress.
H When transmitting in the AM mode, rotate the RF PWR
control (# ) so as to set a maximum (carrier) power output
of 50 Watts.
H Release the PTT switch at the end of your transmission. The
transceiver will return to the receive mode.
4. To adjust the microphone amplifier gain to match the
microphone and your voice level, close the PTT switch,
speak into the microphone in a normal voice level, and
adjust the MIC (gain) control (#
SSB Mode
Adjust the MIC control so that the ALC voltage
(displayed on the right meter) stays within the ALC
zone of the meter (up to 2/3 or full scale deflection)
on voice peaks.
For AM, the MIC control should not be advanced
to the point where the ALC meter deflects. In many
cases, the same setting as used on SSB will be satis-
factory.
Page 80
T
), and the
) as follows:
MOX switch VOX switch
MODE switch
Main Tuning Dial
MIC knob
Please adjust the MIC gain con-
trol to set the ALC within this range.
Advice
H ALC meter deflection may be caused by excessive
drive power, but also by reflected power detected in
the antenna system. If the impedance presented to the
transceiver is different from 50 Ohms, ALC meter
action may be observed that is not related to the proper
setting of the MIC gain control. Therefore, we rec-
ommend that you make MIC gain adjustments into
a dummy load or antenna system presenting an im-
pedance very close to 50 Ohms.
H Rotate the RF PWR control to
set the desired power output.
Clockwise rotation of the RF
PWR control will increase the
power. The adjustment range is
between 5 Watts and 200 Watts, and you should al-
ways use the minimum power necessary for maintain-
ing reliable communications.
H When performing tests (such as the setup of the MIC
or RF PWR controls), be sure to check the frequency
before transmitting, so as to avoid interference to oth-
ers who may already be using the frequency.
H Four techniques for exercising Transmit/Receive con-
trol are provided on the FT
choose the technique(s) that best suit your operating
needs:
G Pressing the microphone's PTT switch will engage the trans-
mitter.
G The rear panel PTT jack may be connected to a foot switch or
other manual switching device in order to engage the trans-
mitter.
PTT jack
G Pressing the front panel MOX switch (#
lock the transmitter on. Press the MOX switch
( a latching type) to return to receive.
G The VOX (Voice Operated Xmit) circuit will en-
gage the transmitter automatically when you speak
into the microphone. For details of VOX operation, see page
94.
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9000D, and you may
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