VX-2R O
PERATING
M
ANUAL
11
O
PERATION
F
REQUENCY
N
AVIGATION
The
VX-2R
will initially be operating in the “VFO” mode, a channelized system which
allows free tuning throughout the currently-selected operating band.
Two basic frequency navigation methods are available on the
VX-2R
:
1) Tuning Dial
(
Outer ring of dual control on Top Panel
)
Rotation of the
DIAL
allows tuning in the pre-programmed steps established for the current
operating band. Clockwise rotation of the
DIAL
causes the
VX-2R
to be tuned toward a higher frequency, while counter-
clockwise rotation will lower the operating frequency.
If you press the [
F/W
] key momentarily, then rotate the
DIAL
, frequency steps of 1 MHz will be selected. This fea-
ture is extremely useful for making rapid frequency excur-
sions over the wide tuning range of the
VX-2R
.
2) Scanning
From the VFO mode, press and hold in the [
BAND
] key for one second, and rotate the
DIAL
knob
while
holding in the
[
BAND
]
key
to select the
bandwidth for the VFO scanner, then release the [
BAND
]
key to begin scanning toward a higher frequency. The scan-
ner will stop when it receives a signal strong enough to break
through the Squelch threshold. The
VX-2R
will then hold
on that frequency according to the setting of the “RESUME”
mode (Set Mode Item 31:
RESUME
). See page 47 for de-
tails regarding Scan Operatin.
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
one click in the counter-clockwise direction while
the
VX-2R
is scanning. The scanning direction will be reversed. To revert to scanning
toward a higher frequency once more, rotate the
DIAL
one click clockwise.
Press the
PTT
switch momentarily to cancel the scanning. This only stops the scan; it does
not cause transmission to occur.
Notice
The
VX-2R
may receive very strong signals on the Image frequency. If you experi-
ence 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.
¦
3.579545 MHz x
n
¦
11.7 MHz x
n
(
n
is an integer: 1, 2, 3, …)
