Yaesu FT-2000D, Operating Manual

Page: 67 / 140

Page 65 FT-2000D O
PERATING
M
ANUAL
SSB/AM M
ODE
T
RANSMISSION
A
DVICE
:
ˆ ALC meter deflection may be caused by excessive drive
power, but also by reflected power detected in the an-
tenna system. If the impedance presented to the trans-
ceiver is different from 50 Ohms, ALC meter action
may be observed that is not related to the proper set-
ting of the [
MIC
] (gain) knob. Therefore, we recom-
mend that you make [ MIC
] knob adjustments into a
dummy load or antenna system presenting an imped-
ance very close to 50 Ohms.
ˆ Rotate the [ RF PWR
] knob to set the desired power
output. Clockwise rotation of the [ RF PWR
] knob will
increase the power. The adjustment
range is between 10 Watts and 200
Watts, and you should always use the
minimum power necessary for main-
taining reliable communications.
The Sub band (VFO-B) frequency display will show
the RF Power Output for 3 seconds whenever the [
RF
PWR
] knob is turned.
You may disable this feature (displaying the RF Power
Output) via Menu item “
015 diSP LVL IND .” See page
117 for details.
ˆ
The analog PO meter indicates the average power out-
put level. SSB transmit average talk power is normally
10% to 50% of the peak power output. Voice charac-
teristics, microphone qualities, parametric equalizer
and compression settings affect actual talk power out-
put.
ˆ When performing tests (such as the setup of the [ MIC
]
or [ RF PWR
] knobs), be sure to check the frequency
before transmitting, so as to avoid interference to oth-
ers who may already be using the frequency.
ˆ Four techniques for exercising Transmit/Receive con-
trol are provided on the
FT-2000D , and you may
choose the technique(s) that best suit your operating
needs:
€ Pressing the microphone’s PTT switch will engage
the transmitter.
€ The rear panel PTT jack may be connected to a
foot switch or other manual switching device in
order to engage the transmitter.
€ Pressing the front panel [ MOX
] button will lock
the transmitter on. Press the [
MOX
] button again
to return to receive.
€ The VOX (Voice Operated Xmit) circuit will en-
gage the transmitter automatically when you speak
into the microphone. For details of VOX opera-
tion, see page 78.