Enhancing Transmit Signal Quality; Parametric Microphone Equalizer - Yaesu FT DX 3000 Operating Manual

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The FT 3000 includes a unique Three-Band Parametric Microphone Equalizer that provides precise, independent con-
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trol over the low, mid and treble ranges in your voice waveform. You may utilize one group of settings when the speech
processor is off and an alternate group of settings when the speech processor is on. The speech processor feature is de-
scribed in the next chapter.
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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 aspects of configuration that you may adjust on the Parametric Equalizer are:
Center Frequency: The center frequency of each of the three bands may be adjusted.
Gain: The amount of enhancement (or suppression) within each band may be adjusted.
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 via
Menu item "177 TX MAX POWER", so you will not
cause interference to other users while making ad-
justments.
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 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 monitor receiver) while listen-
ing to your transmitted signal.
3. To adjust the Parametric Microphone Equalizer
while the speech processor is disabled, press the [ p/
q/t/u ] button to select the "MIC EQ", then press
the [ SELECT ] button to select "ON".
To adjust the Parametric Microphone Equalizer with
the speech processor engaged, press the [ p/q/t/u ]
button to select the "PROC", then press the [ SE-
LECT ] button to select "ON".
"ON"
4. Press the [ MONI ] button, if you want to listen on the
FT 3000 internal monitor.
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5. Press the [ MENU ] button. The Menu list will appear
in the display.
6. Rotate the [ CLAR/VFO-B ]
button) to find the "EQ" Menu area, containing Menu
items "159" through "167"; these parameters ap-
ply to the adjustment of the Parametric Microphone
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[ MENU ] Button [ SELECT ] Button
Equalizer when the speech processor is disabled.
Menu items "168" through "176" apply to the ad-
justment of the Parametric Microphone Equalizer
when the speech processor is engaged.
7. Press the [ SELECT ] button, then rotate the [ CLAR/
VFO-B ] knob (or press the p/q button) to perform
adjustments to a particular Menu item.
8. Close the PTT switch, and speak into the micro-
phone while listening to the effect of the changes
you are making. Because the overall effect on the
sound will change with each adjustment, you should
make several passes through each adjustment area, to
be sure that you are achieving the optimum settings.
9. When you have completed all adjustments, press the
[ SELECT ] button, then press the [ MENU ] button to
save the new settings and exit to normal operation.
If you only press the [ MENU ] button momentarily
to exit, none of the changes you performed will be
stored.
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To roll off excessive bass response in a wide-range stu-
dio microphone, try putting a 10 dB null at 100 Hz with
a bandwidth of "1" or "2", do about a 3 dB null centered
on 800 Hz with a bandwidth of "3," and then put an 8
dB peak centered on 2100 Hz with a bandwidth of "1."
These are starting recommendations; each microphone
and user's voice will be different, often requiring differ-
ent settings.
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[ MONI ] Button [ CLAR/VFO-B ] Knob
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