Yaesu VX-177, Руководство по эксплуатации

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VX-177 O
PERATING
M
ANUAL
36
The
VX-177
allows you to scan just the memory channels, the entire operating band, or a
portion of that band. It will halt on signals encountered, so you can talk to the station(s) on
that frequency, if you like.
Scanning operation is basically the same in each of the above modes. Before you begin,
take a moment to select the way in which you would like the scanner to resume scanning
after it halts on a signal.
Setting the Scan-Resume Technique
Three options for the Scan-Resume mode are available:
BUSY
: In this mode, the scanner will halt on a signal it encounters. Two seconds after the
carrier has dropped because the other station(s) ceased transmission, the scanner
will resume. In the case of constant-carrier signals like Weather Station broad-
casts, the scanner will likely remain on this frequency indefinitely.
HOLD
: In this mode, the scanner will halt on a signal it encounters. It will not restart
automatically; you must manually re-initiate scanning if you wish to resume.
TIME
: In this mode, the scanner will halt on a signal it encounters, and will hold there for
five seconds. If you do not take action to disable the scanner within that time
period, the scanner will resume even if the stations are still active.
To set the Scan-Resume mode:
1.
Press the [ F
] key, then press the [
0
(
SET
)] key to enter the Set mode.
2. Rotate the DIAL knob to select Set Mode Item 32: RESUME .
3. Press the [ F
] key momentarily to enable adjustment of this Set
Mode Item.
4. Rotate the DIAL knob to select the desired scan-resume mode.
5. When you have made your selection, press the PTT switch to
save the new setting and exit to normal operation.
The default condition for this Set Mode Item is “BUSY.”
S
CANNING
S
ETTING THE
S
QUELCH
L
EVEL DURING
A
CTIVE
S
CANNING
O
PERATION
The
VX-177
allows adjustment of the Squelch level “on the fly” while you are scanning.
1. While the scanner is engaged, press the [
F
] key, then press
the
MONI
switch (the current squelch level (e.g. “
S 3
”)
will appear in fine print above the frequency display).
2. Rotate the
DIAL
to select the desired Squelch level.
3. Press the PTT switch momentarily to save the new setting and exit to normal
operation. In this case, pressing the
PTT
switch this one time will not causing
scanning to stop.