Subaudible Tones; Tone Squelch - Icom IC-V8 Instruction Manual

9

' ' Tone squelch

D Operation
The tone squelch opens only when receiving a signal containing a
matching subaudible tone. You can silently wait for calls from group
members using the same tone.
q Set the operating frequency.
• Set the AF and squelch to the desired level as the normal operation.
w Set the desired subaudible tone in the set mode.
• See right for programming.
e Push [1•
• Repeat several times until " " appears when selecting CTCSS, or
" " appears when selecting DTCS.
D
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 [SQL].
t Operate the transceiver in the normal way.
y To cancel the tone squelch, push [1•
pushed.
• Repeat several times until " " or " " disappears.
NOTE: The transceiver has 50 tone frequencies and conse-
quently their spacing is narrow compared to units having 38
tones. Therefore, some tone frequencies may receive interfer-
ence from adjacent tone frequencies.
To prevent interference from adjacent tone frequencies, using
the frequencies as in the following table, is recommended.
• Recommended tone frequencies
67.0
69.3
71.9
74.4
35

SUBAUDIBLE TONES

] after [A•
TONE
77.0 88.5 100.0
79.7 91.5 103.5
82.5 94.8 107.2
85.4 97.4 110.9
] is pushed.
FUNC
D
114.8 131.8
118.8 136.5
123.0 141.3
127.3 146.2
] after [A•
TONE
151.4 173.8 203.5
156.7 179.9 210.7
162.2 186.2 218.1
167.9 192.8 225.7
] is
FUNC
233.6
241.8
250.3