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

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Page 48 FT
DX
9000D O
PERATION
M
ANUAL
C
ONVENIENT
F
EATURES
D
UAL
R
ECEIVE
The FT
DX
9000D is capable of simultaneous reception, using the Main (VFO-A) and Sub (VFO-B) receivers, in what is
called the Dual Receive mode. Especially useful for DX work, here is the operating procedure for Dual Receive operation.
Advice
H
When operating in Dual Receive, the manner in which
the audio is fed to the left and right sides of your head-
phones (Stereo, Monaural, or Mixed) may be config-
ured using Menu item “RX AUDIO 076 HEAD-
PHONE MIX” (see page 139).
H
When changing modes from SSB to CW, you will ob-
serve a frequency shift on the display. This shift rep-
resents the BFO offset between the “zero beat” fre-
quency and the audible CW pitch (tone) you can hear
(the pitch is programmed by the PITCH control:
#
), even though the actual tone that you hear is not
changing. If you do not want this frequency shift to
appear when changing modes from (for example) USB
to CW, use the Menu item “MODE-CW 050 CW
FREQ DISPLAY,” described on page 136.
H
When operating on the FM mode on the Sub (VFO-
B) band, rotate the Sub (VFO-B) SQL (Squelch)
control (#
) clockwise just to the point where the
background noise is just silenced. This is the point of
maximum sensitivity to weak signals. Excessive ad-
vancement of the SQL control will degrade the abil-
ity of the receiver to detect weak signals. Adjustment
of the Main (VFO-A) band Squelch is accomplished
using the Main SQL control (#
).
1. While receiving on the Main (VFO-A) band, engage
the Sub (VFO-B) receiver by pressing the SUB RX
key (#
). You will now be receiving on the two fre-
quencies shown on the main frequency display.
2. Adjusting the volume:
To adjust the Main (VFO-A) audio level, rotate the
Main AF GAIN control (#
). To adjust the Sub
(VFO-B) audio level, rotate the Sub AF GAIN con-
trol (#
). In both cases, clockwise rotation of the
knob will increase the volume level.
3. Press the B switch (# ) to enable the capability to
change the operating mode for the Sub (VFO-B) band.
4. Having pressed the B key in the previous step, you
may also press the BAND keys surrounding the TFT
to select the operating band on which you want to set
up the Sub (VFO-B) receiver.
5. After you have set up the band and mode for the Sub
(VFO-B) band, you should now select the proper an-
tenna, using the ANTENNA SELECT 1 ~ 4 switches
(#
), or, for receive-only capability, the RX (An-
tenna) switch (# ).
6. Rotate the MAIN tuning dial (# ) to adjust the
Main (VFO-A) frequency, and rotate the CLAR/
VFO-B tuning dial (#
) to adjust the Sub (VFO-
B) frequency.
7. To cancel Dual Receive operation, and receive just
on the Main (VFO-A) receiver, press the RX switch
(#
); the Orange LED to the right of the CLAR/
VFO-B knob will go out, and monoband operation
on the Main (VFO-A) receiver will resume.
Note
Please remember that, so long as the B Mode switch
(#
) is illuminated, any mode or band changes will still
be applied to the Sub (VFO-B) band, whether or not Dual
Receive is engaged.
Quick Note
By convention in the Amateur bands, LSB is used on the 7
MHz and lower bands (with the exception of 60 meters),
while USB is utilized on the 14 MHz and higher bands.
MAIN(VFO-A)
AF GAIN knob
SUB(VFO-B)
AF GAIN knob
SUB(VFO-B)
RX key
BAND key
MODE
B key
MODE key
MAIN(VFO-A)
MAIN tuning dial
MAIN(VFO-B)
SQL knob
MAIN(VFO-A)
SQL knob