Using The Speech Processor - Ssb, Am Mode - Yaesu FTDX9000D Operation Manual

SSB/AM M
ODE
U
SING THE
The Speech Processor is designed to increase "talk power" by increasing the average power outoput via a sophisticated
compression technique. The result is improved intelligibility when conditions are difficult.
1. Adjust the MIC gain control (#
described on page 80.
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 Procesor 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.
H You may observe the effect of your COMP level ad-
justments by viewing the wave-form on the "Oscillo-
scope" page on the TFT.
H The Transmit Monitor is another helpful way of veri-
fying proper adjustment of the Compresison level. By
Pressing the MONI key and adjusting the MONI
control for a comfortable listening level while you are
transmitting, you will be able to hear the difference in
sound quality as you make adjustments.
H The RF PWR control still controls the RF power
output, whether or not the Speech Processor is en-
gaged.
Page 86
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T
NHANCING RANSMIT
- SSB, AM M
METER switch
MIC knob / PROC knob
PROC switch
METER switch
MIC knob / PROC knob
PROC switch
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