Yaesu FT DX 9000 CONTEST 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.
A
DVICE
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), then advance the PROC
level only as far as required to obtain a useful increase
in average power output.
When the optional Data Management Unit (DMU-
9000) and TFT Display Unit (TFT-9000) are in-
stalled, you may use the Audio Scope/Oscilloscope
page on the TFT to help you adjust the setting of the
Compression Level of the Speech Processor for the
optimum performance using your voice and micro-
phone.
VOX DELAY Knobs
VOX Knob
The inner [ VOX ] knob sets the gain of the VOX cir-
cuit, to set the level of microphone audio needed to
activate the transmitter during voice operation while
the [ VOX ] switch (#
, described previously) is en-
gaged. The [ VOX ] switch must 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 #
A
DVICE
The VFO-B frequency display will show the hang time
of the VOX circuit for 3 seconds whenever the inner
[ 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 133 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 adjusted via the controls described in the next sec-
tion.
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.
FT 9000 C O
DX ONTEST
below.
M
PERATION ANUAL
F F F F F P P P P P
R R R R R ONT ONT ONT ONT ANEL ANEL ANEL
ONT ANEL ANEL
A
DVICE
The 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 133 for details.
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.
A
DVICE
The 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 133 for de-
tails.
N
OTE
The SSB VOX hang time is adjusted via the [ DE-
LAY ] control (#
, described previously).
BK-IN/SPOT Switche
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.
A
DVICE
The VFO-B frequency display shows the spotting 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 ] switch (#
Blanker is activated via the [ NB ] switch, described
in the next section.
SQL Knob
The outer [ SQL ] knob sets the signal level threshold
at which VFO-A audio is muted, in all modes. It is
very useful during local rag-chews, to eliminate noise
between incoming transmissions. This control is nor-
mally 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 (#
above), described in the previous section.
C C C C C
ONTR ONTR OLS ONTR OLS OLS OLS
ONTR ONTR OLS
below). The Noise
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