VX-8DR O
PERATING
M
ANUAL
18
3
)
S
CANNING
From the VFO mode, press and hold in the
key for
one second, and
while still holding in
the
key, rotate
the
DIAL
knob to select the bandwidth for the VFO scan-
ner. Release the
key to begin scanning toward a higher
frequency. The scanner will stop when it receives a signal
strong enough to break through the Squelch threshold. The
VX-8DR
will then hold on that frequency according to the
setting of the “
RESUME
” mode (Menu Item
83: SCAN RE-
SUME
).
If you wish to reverse the direction of the scan (i.e. toward a lower frequency, instead of a
higher frequency), just rotate the
DIAL
knob one click in the counter-clockwise direction
while the
VX-8DR
is scanning. The scanning direction will be reversed. To revert to
scanning toward a higher frequency once more, rotate the
DIAL
knob one click clock-
wise.
Press the
PTT
switch briefly to cancel the scanning. See page 60 for more details regard-
ing Scan Operation.
You may initiate upward or downward scanning by pressing and holding
either
or
key for one second, respectively. In this case, the scanner
scans the bandwidth that was previously selected.
O
PERATION
F
REQUENCY
N
AVIGATION
Dual Receive Notice
The
VX-8DR
may receive very strong signals on the Image frequency, and/or the
receiver sensitivity may be somewhat reduced by the combination of the “A-Band”
and “B-Band” frequencies while Dual Receive operation is engaged.
If you experience interference that you suspect may be coming in via an “Image”
path, you may calculate the possible frequencies using the formulas below. This
information may be used in the design of effective countermeasures such as traps,
etc.
9.8304 MHz x
n
11.7 MHz x
n
(
n
is an integer: 1, 2, 3, …)
4.9152 MHz x
n
6.1440 MHz x
n
“A-Band” Freq. = (“B-Band” Freq. ± 46.35 MHz) x
n
“B-Band” Freq. = (“A-Band” Freq. ± 47.25 MHz) x
n
(@ “A-Band” = NFM)
“B-Band” Freq. = (“A-Band” Freq. ± 45.8 MHz) x
n
(@ “A-Band” = WFM)
Summary of Contents for VX-8DR
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Page 77: ...VX 8DR OPERATING MANUAL 75 NOTE ...
Page 99: ...VX 8DR OPERATING MANUAL 97 NOTE ...
Page 173: ...VX 8DR OPERATING MANUAL 171 NOTE ...
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