Subaudible Tones; Tone Squelch - Icom IC-V82 Instruction Manual

9

SUBAUDIBLE TONES

■ 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
• See page 35 for programming.
e Push [A•
], then push [1•
FUNC
• Repeat several times until " " appears when selecting CTCSS,
or " " appears when selecting DTCS.
D
1
A
Push
FUNC
TONE
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•
• Repeat several times until " " or " " disappears.
34
.
SET MODE
].
TONE
CTCSS DTCS
] and [1•
FUNC TONE
D
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
67.0 79.7 94.8
69.3 82.5 97.4
71.9 85.4 100.0
74.4 88.5 103.5
77.0 91.5 107.2
• Recommended DTCS codes
023 051 114 143
025 054 115 152
026 065 116 155
031 071 125 156
032 072 131 162
043 073 132 165
]. 047 074 134 172
(Unit: Hz)
110.9 131.8 156.7 186.2
114.8 136.5 162.2 192.8
118.8 141.3 167.9 203.5
123.0 146.2 173.8 210.7
127.3 151.4 179.9 218.1
174 251 315 371 445 532
205 261 331 411 464 546
223 263 343 412 465 565
226 265 346 413 466 606
243 271 351 423 503 612
244 306 364 431 506 624
245 311 365 432 516 627
225.7
233.6
241.8
250.3
631 723
632 731
654 732
662 734
664 743
703 754
712