Enhancing Transmit Signal Quality; Parametric Microphone Equalizer; ( Ssb/Am Mode ) - Yaesu FT-991A Operating Manual

Enhancing Transmit Signal Quality

Parametric Microphone Equalizer ( SSB/AM mode )
The FT-991A includes a unique Three-Band Parametric Microphone Equalizer that provides precise, independent con-
trol over the low, mid and treble ranges in the voice waveform. You may utilize one group of settings when the speech
processor is off and use an alternate group of settings when the speech processor is on. The speech processor feature is
described in the next chapter.
Quick Point:
The Parametric Equalizer is a unique technique for adjusting the signal quality. The three audio ranges may be adjusted
so precisely, it is possible to craft an audio response that provides a natural and pleasant sound that you may not have
ever experienced before. Alternately, the effective "talk power" can be significantly enhanced.
The configuration aspects that may be adjusted on the Parametric Equalizer are:
Center Frequency: The center frequency of each of the three bands may be adjusted.
The amount of enhancement ( or suppression ) within each band may be adjusted.
Gain:
Q: The bandwidth over which the equalization is applied may be adjusted.
Setup of the Parametric Microphone Equalizer
1. Connect the microphone to the MIC jack.
2. Set the RF output power to minimum value.
Advice:
 We recommend that you connect a dummy load
to one of the Antenna jacks, and monitor your
signal on a separate receiver, to prevent interfer-
ence to other users.
 You will have the best chance of hearing the ef-
fects of adjustments if you wear headphones
( connected to the separate monitor receiver )
while listening to your transmitted signal.
3. To adjust the

Parametric Microphone Equalizer

while the speech processor is disabled, press the
F ( M-LIST ) button, then touch [ MIC-EQ ] to select
"ON".
To adjust the Parametric Microphone Equalizer with
the speech processor engaged, press the
button, then touch [ PROC ] to select "ON".
4. Touch [ MONI ] , if you want to listen on the
internal monitor.
FT- 991 Operating Manual
MENU ( SETUP ) Button
5. Press the MENU
will appear in the TFT display.
6. Rotate the
containing Menu items "119" through "127"; these
parameters apply to the adjustment of the Parametric
Microphone Equalizer when the speech processor
F ( M-LIST )
is disabled. Menu items "128" through "136" ap-
ply to the adjustment of the Parametric Microphone
Equalizer when the speech processor is engaged.
7. Touch [ SELECT ] on the LCD, then rotate the
MULT knob to adjust a particular Menu item.
FT-991A
F ( M-LIST ) Button
MULTI Knob
( SETUP )
button. The Menu list
MULT knob to find the "EQ" Menu area,
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