Ssb/Am Mode Transmission; Using The Speech Processor - Ssb, Am Mode - Yaesu FT DX 9000 CONTEST - MANUAL 2 Operation Manual

SSB/AM M
ODE
U
SING THE
The Speech Processor is designed to increase "talk power" by increasing the average power output via a sophisticated
compression technique. The result is improved intelligibility when conditions are difficult.
1. Adjust the MIC gain control (#
described on page 66.
2. Rotate the METER switch (#
so as to select "COM" (Compression).
3. Press the PROC switch (#
LED imbedded in the switch will light up, confirming
that the Speech Processor is engaged.
4. Press the PTT switch on the microphone, and speak
into the microphone in a normal voice level. Observe
the deflection of the meter needle on the COMP meter
scale.
5. Rotate the PROC control (#
needle deflects to not more than "10 dB" on the COMP
scale.
To switch the Speech Processor off, press the PROC
switch once more. The Red LED imbedded in the switch
will go out, confirming that the Speech processor is turned
off.
Advice
Excessive advancement of the COMP control will result
in a degradation of the transmitted signal's signal-to-noise
ratio, thereby reducing intelligibility at the other end of
the circuit.
When the optional Data Management Unit (DMU-
9000) and TFT Display Unit (TFT-9000) are installed,
you may use the Audio Scope/Oscilloscope page on
the TFT to help you adjust the setting of the Compres-
sion Level of the Speech Processor for the optimum
performance using your voice and microphone.
The Transmit Monitor is another helpful way of veri-
fying proper adjustment of the Compression level. By
Pressing the MONI key (#
MONI control (#
level while you are transmitting, you will be able to
hear the difference in sound quality as you make ad-
justments.
The RF PWR control (#
power output, whether or not the Speech Processor is
engaged.
Page 72
T
RANSMISSION (E
S
PEECH
) for SSB use, as
) fully to the left,
) momentarily. The Red
) so that the meter
) and adjusting the
) for a comfortable listening
) still controls the RF
T
NHANCING
P
ROCESSOR
- SSB, AM M
METER switch
PROC switch
MIC knob / PROC knob
MIC knob / PROC knob
FT 9000 C
DX
S Q
RANSMIT IGNAL
-
ODE
METER switch
PROC switch
O
ONTEST PERATION
)
UALITY
M
ANUAL