Yaesu FT DX 9000 CONTEST - 2, Руководство по эксплуатации

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Page 23 FT
DX
9000 C
ONTEST
O
PERATION
M
ANUAL
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 per-
formance using your voice and microphone.
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 speaking,
and the automatic switch from transmit back to re-
ceive. 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 #
below.
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.
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.
Note
The SSB VOX hang time is adjusted via the DE-
LAY control (#
, described previously).
BK-IN/SPOT Switches
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.
NB/SQL Knobs
NB Knob
The inner NB knob adjusts the noise blanking level
when the (analog) IF noise blanker is activated by press-
ing the NB switch (#
below). The Noise 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.
F
RONT
P
ANEL
C
ONTROLS