Yaesu FTDX9000D - DATA MANAGEMENT Operation Manual page 25

PROC ( Processor ) Switch
This button enables the RF speech processor for SSB
transmission. Processing level is set by the outer con-
trol with the same name (see previous section). While
activated, the LED in this button glows red.
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The Speech Processor is a tool for increasing the av-
erage power output through a compression technique.
However, if the PROC level control is advanced too
far, the increase in compression becomes counter-pro-
ductive, as intelligibility will suffer. We recommend
that you monitor the sound of your signal using the
Monitor (with headphones), and watch the Oscillo-
scope page on the TFT while transmitting (Monitor
must be on), then advance the PROC level only as far
as required to obtain a useful increase in average
power output.
VOX DELAY Knobs
VOX Knob
The inner [ VOX ] knob sets the gain of the VOX circuit,
to set the level of microphone audio needed to activate
the transmitter during voice operation while the [ VOX ]
button is engaged. The [ VOX ] switch (#
be switched On to engage the VOX circuit.
DELAY Knob
The outer [ DELAY ] knob sets the hang time of the
VOX circuit, between the moment you stop speak-
ing, and the automatic switch from transmit back to
receive. Adjust this for smooth VOX operation, so
the receiver is only activated when your transmission
is ended and you wish to receive.
For CW operation, you can adjust the keying delay
separately; see control #
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The Sub band (VFO-B) frequency display will show
the hang time of the VOX circuit for 3 seconds when-
ever the outer [ DELAY ] knob is turned.
You may disable this feature (displaying the hang time
of the VOX circuit) via Menu item "DISPLAY 022
LEVEL INDICATOR." See page 146 for details.
KEYER Switch
This button toggles the internal CW keyer on and off.
While activated, the LED in this button glows red. The
Keyer sending speed, and the CW Hang Time are ad-
justed via the controls described in the next section.
SPEED CW DELAY Knobs
The internal Electronic Keyer is activated by the
[ KEYER ] switch, described in the previous section.
SPEED Knob
The inner [ SPEED ] knob adjusts the keying speed
of the internal CW keyer. Clockwise rotation increases
the sending speed.
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The Sub band (VFO-B) frequency display will show
the keying speed for 3 seconds whenever the inner
[ SPEED ] knob is turned.
You may disable this feature (displaying the keying
speed) via Menu item "DISPLAY 022 LEVEL IN-
DICATOR." See page 146 for details.
FT 9000D O
DX PERATION
above) must
below.
M
ANUAL
F P
RONT ANEL
CW DELAY Knob
This outer [ CW DELAY ] knob sets the hang time of
the CW "VOX" circuit, between the moment you stop
sending, and the automatic switch from transmit back
to receive during "Semi-break-in" operation. Adjust
this just long enough to prevent the receiver from be-
ing restored during word spaces at your preferred send-
ing speed. Clockwise rotation increases the hang time.
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The Sub band (VFO-B) frequency display will show
the hang time of the CW "VOX" circuit for 3 seconds
whenever the outer [ CW DELAY ] knob is turned.
You may disable this feature (displaying the hang time
of the CW "VOX" circuit) via Menu item "DISPLAY
022 LEVEL INDICATOR." See page 146 for details.
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The SSB VOX hang time is adjusted via the [ DE-
LAY ] control described in section
BK-IN/SPOT Switch
This button turns the full break-in (QSK) CW capa-
bility on and off. While QSK is activated, the LED in
this button glows red.
The [ SPOT ] button turns on the CW receiver spot-
ting tone; by matching the SPOT tone to that of the
incoming CW signal (precisely the same pitch), you
will be "zero beating" your transmitted signal on to
the frequency of the other station.
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The Sub (VFO-B) band frequency display will indi-
cate the offset tone frequency when this switch is
pressed.
NB/SQL Knobs
NB Knob
The inner [ NB ] knob adjusts the noise blanking level
when the (analog) IF noise blanker is activated by
pressing the [ NB ] button. The Noise Blanker is acti-
vated via the [ NB ] switch, described in the next sec-
tion.
SQL Knob
The outer [ SQL ] knob sets the signal level threshold
at which Main (VFO-A) receiver audio is muted, in
all modes. It is very useful during local rag-chews, to
eliminate noise between incoming transmissions. This
control is normally kept fully counter-clockwise (off),
except when scanning and during FM operation.
NB Switch
Pressing this button activates the (analog) IF Noise
Blanker, which may help reduce many different types
of man-made impulse noise (but not atmospherics).
When the Noise Blanker is activated, the LED inside
the button will glow red. Adjustment of the Noise
Blanker level is accomplished via the [ NB ] knob, de-
scribed in the previous section.
VRF/μ-T Switch
This button turns the Main band (VFO-A) receiver's
VRF filter or μ-TUNE filter on and off. While acti-
vated, the LED inside the button will glow red.
C
ONTROLS
above.
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