■ Tone squelch
D Operation
The tone squelch opens only when receiving a signal con-
taining a matching subaudible tone. You can wait for calls
from group members using the same tone and not hear other
signals.
q Set the operating frequency.
•
Set the volume and squelch to the desired level as the normal op-
eration.
w Set the desired subaudible tone in
SET MODE
.
• See page 35 for programming.
e Push [A•
FUNC
], then push [1•
TONE
].
• Repeat several times until “ ” appears when selecting CTCSS,
or “ ” appears when selecting DTCS.
r When the received signal includes a matching tone,
squelch opens and the signal can be heard.
• When the received signal’s tone does not match, tone squelch
does not open, however, the S-indicator shows signal strength.
• To open the squelch manually, push and hold [MONI].
t Transmit in the normal way.
y To cancel the tone squelch, push [A•
FUNC
] and [1•
TONE
].
• Repeat several times until “ ” or “ ” disappears.
NOTE: The transceiver has 50 tone frequencies and con-
sequently their spacing is narrow compared to units having
38 tones. Therefore, some tone frequencies may receive
interference from adjacent tone frequencies.
To prevent interference from adjacent tone frequencies,
using the frequencies as in the following table, is recom-
mended.
• Recommended CTCSS frequencies (Unit: Hz)
• Recommended DTCS codes
