Yaesu VR-160, Operating Manual, Page: 26 / 100

VR-160 O
PERATING
M
ANUAL
24
T
ONE
S
QUELCH
O
PERATION
Some Two-way FM Radio Stations superimpose a very-low-frequency audio tone on the
FM carrier. This helps prevent false activation of the station by radar or spurious signals
from other transmitters. This tone system, called “Tone Squelch”, is included in your
VR-
160 , and is very easy to activate.
Tone Squelch system setup involves two actions: setting the Tone Frequency
and then setting of the Tone Mode. These actions are set up by using the
[MODE] key or Set Mode Items 51: SQL TYPE and 55: TONE FREQUENCY.
1. Press the [ F/W
] key, then press the [
MODE
] key. This provides
a “Short-cut” to Set Mode Item 51: SQL TYPE .
2. Rotate the DIAL knob to select “ TSQL ”. This activates the Tone
Squelch system.
Note : Do not forget to pull the DIAL knob to rotate the DIAL
knob.
3. When you have made your selection, press the [ MODE
] key to
save the new setting.
4. Press and hold in the [ BANK
] key for one second to enter the Set mode.
5. Rotate the
DIAL
knob to select Set Mode Item 55: TONE FRE-
QUENCY .
Note
: Do not forget to pull the DIAL knob to rotate the DIAL
knob.
6. Press the [
BANK
] key briefly to enable adjustment of the CTCSS
frequency.
7. Rotate the
DIAL
knob until the display indicates the Tone Fre-
quency you need to be using (ask the station owner/operator if
you don’t know the tone frequency).
8. When you have made your selection, press and hold in the [ BANK
] key for one sec-
ond to save the new settings and exit to normal operation. This is different from the
usual method of restoring normal operation, and it applies only to the configuration of
the Tone frequencies.
When the Tone Squelch is activated, the “
TSQ
” icon will appear in
the display.
During Tone Squelch operation, you may set up the VR-
160 so a ringing “bell” sound alerts you to an incoming
call. See page 29 for details.
T
ONE
S
QUELCH
/DCS O
PERATION