Yaesu VR-160, Руководство по эксплуатации, Страница: 30 / 100

VR-160 O
PERATING
M
ANUAL
28
T
ONE
S
EARCH
S
CANNING
In operating situations where you don’t know the Tone Frequency or DCS code being used
by another station or stations, you can command the radio to listen to the incoming signal
and scan in search of the tone being used. Two things must be remembered in this regard:
To scan for the tone in use:
1.
Set the radio up for either Tone Squelch or
DCS operation (see the previous discus-
sions). In the case of Tone Squelch, “
TSQ ”
will appear on the display; in the case of
DCS, “
DCS ” will appear on the display.
2. Press and hold in the [
BANK
] key for one second to enter the Set mode.
3. Rotate the DIAL knob to select Set Mode
Item 55: TONE FREQUENCY when TONE
SQL is selected, or Set Mode Item 23: DCS
CODE during DCS operation.
Note : Do not forget to pull the DIAL knob to rotate the DIAL knob.
4. Press the [
BANK
] key briefly to enable adjustment of the selected Set Mode Item.
5. Press the SCAN switch to start scanning for the incoming Tone Frequency or DCS
code.
6. When the radio detects the correct tone or code, it will halt on that tone/code, and
audio will be allowed to pass. Press the
SCAN switch to lock in that tone/code, then
press and hold in the [ BANK
] key for one second to exit to normal operation.
If the Tone Scan feature does not detect a tone or code, it will continue to
scan indefinitely. When this happens, it may be that the other station is not
sending any tone. You can press the SCAN switch to halt the scan at any time.
You may listen to the (muted) signal from the other station during Tone Scanning by changing
Set Mode Item 56:
TONE-SCH MUTE to “ OFF .” See page 86 for details. You can also
change the Tone Search scanning speed, using Set Mode Item 57: TONE-SCH SPEED . See
page 86.
Tone Scanning works either in the VFO or Memory modes.
T
ONE
S
QUELCH
/DCS O
PERATION