Yaesu FT DX 9000D - COMPUTER AIDED TRANSCEIVER, Руководство по эксплуатации

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Page 33 FT
DX
9000D O
PERATION
M
ANUAL
ACM ( Adjacent Channel monitor ) Switch
(CW Mode)
When using a narrow bandwidth, such as 300 Hz, on
the Main (VFO-A) band receiver in the CW mode,
pressing the ACM switch will take over the Sub (VFO-
B) band receiver, and utilize it for monitoring the sig-
nal strength of any signals being received inside a 2.4
kHz window centered on your current operating fre-
quency. You will not hear any of the interfering sig-
nals, but their signal strength will appear on the Sub
(VFO-B) band S-meter.
RX Indicator/Switch
This is the switch that turns the Sub (VFO-B) receiver
On and Off. When this button is pressed to make the
Sub (VFO-B) receiver active, the Green LED imbed-
ded within the switch will light up. Pressing the switch
again will disable this receiver, and the imbedded
Green LED will turn off.
TX Indicator/Switch
This is the switch that turns the Sub (VFO-B) transmitter
On and Off. When this button is pressed to transfer trans-
mitter control to the Sub (VFO-B) frequency and mode,
the Red LED imbedded within the switch will light up.
Pressing this switch once more will transfer frequency/
mode control back to the Main (VFO-A) side, and the
Red LED imbedded within this switch will turn off.
CLAR (Clarifier) Switch
When this switch is pushed, the CLAR/VFO-B knob
(#
, described later) will be enabled for the purpose of
utilizing the CLAR/VFO-B as an “Offset tuning” control
to allow tuning away from the Main (VFO-A) frequency.
BAND/MHz Switch
BAND Switch
Pressing this button momentarily allows you to select
the main (VFO-A) operating band (Amateur bands)
using the CLAR/VFO-B knob.
MHz Switch
Pressing and holding in this button for 2 seconds allows
you to tune the main band (VFO-A) frequency down or
up in 1 MHz increments, using the CLAR/VFO-B knob.
B-DISP OFF Switch
Pressing this button causes the sub band (VFO-B) fre-
quency to be blanked out, for local rag-chews or other
occasions when the additional display information is
not needed. When this function is activated, the LED
inside the button will glow green.
MCH/GRP Switch
MCH Switch
Pressing this button momentarily allows you to select
the memory channel using the CLAR/VFO-B knob.
GRP Switch
Pressing and holding in this button for 2 seconds al-
lows you to select the memory group using the CLAR/
VFO-B knob.
P.BACK Switch
Press and hold in this button for 2 seconds to activate
the recording feature of the internal Digital Voice Re-
corder. The Voice Recorder allows you to record the
main band (VFO-A) receiver audio for the most-re-
cent 30 seconds. While you’re recording the receiver
audio, the LED in this button glows red.
Press and hold in this button for 2 seconds once more
to stop the recording, then press this button momen-
tarily again to play back the receiver audio for the
most-recent 30 seconds of reception before you
stopped the recording.
While playing back the receiver audio, the LED in-
side button will glow umber.
Press and hold in this button for 2 seconds again to
resume recording.
AFL Switch
Pressing this button activates the Audio (AF) Limiter
circuit of the Main (VFO-A) band receiver. This will
protect the audio amplifier from distortion, and pro-
tect your ears from high audio levels, caused by sud-
den peaks in audio input when the AGC is set to “OFF.”
When the Audio Limiter circuit is activated, the LED
inside the button will glow orange.
SHIFT WIDTH Knobs
(except on FM mode)
SHIFT Knob
This knob provides adjustment of the IF DSP pass-
band, using 20 Hz steps for precise adjustment and
easy reduction of interference on either side of your
operating frequency. The total adjustment range is ± 1
kHz.
The normal operating setting for this knob is straight
up, in the 12 o’clock position.
WIDTH Knob
The outer WIDTH knob, when turned to the 12
o’clock position, sets the overall IF bandwidth of the
main band (VFO-A) receiver to its maximum band-
width. Turning the WIDTH knob either direction,
reduces the overall IF bandwidth of the main band
(VFO-A) receiver.
When the NAR (Narrow) filter selection is engaged,
this control is disabled. The SHIFT control, how-
ever, is still fully functional.
Use this control to narrow the IF DSP passband, as
necessary, to reduce interference. The SHIFT con-
trol may be used to re-center the passband response
on the incoming signal, and you may find that the
CONTOUR and IF NOTCH filters may also help im-
prove intelligibility and/or reduce interference. See
also the discussions of control #
(
CONT DNR
)
and # (VRF/µ-T/NTCH), described previously.
Advice
When the # NAR switch has been pushed, the
WIDTH control no longer functions. The IF SHIFT
system is still fully operational, however.
F
RONT
P
ANEL
C
ONTROLS