Yaesu FTDX-9000MP, Operation Manual

Page: 89 / 180

Page 87 FT
DX
9000MP O
PERATION
M
ANUAL
A A A A A
D D D D DVICE VICE VICE VICE VICE
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 recommend that you
make [
MIC
] gian adjustments into a dummy load or antenna system presenting an impedance very close to 50
Ohms.
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 10 Watts and 400 Watts, and you should always use the
minimum power necessary for maintaining reliable communications.
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 others who may already be using the frequency.
Four techniques for exercising Transmit/Receive control are provided on the
FT
DX
9000MP , 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
]
switch will lock the transmitter on.
Press the [ MOX
] switch (a latching type) to return to receive.
The VOX (Voice Operated Xmit) circuit will engage the transmitter automatically when you speak into the
microphone. For details of VOX operation, see page 101.
PTT Jack
SSB/AM M SSB/AM M
SSB/AM M SSB/AM M
SSB/AM M
ODE ODE
ODE ODE
ODE
T T T T T
RANSMISSION RANSMISSION
RANSMISSION RANSMISSION
RANSMISSION