Icom IC-4088E, Instruction Manual

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13
6
GROUP MODE (CTCSS)
6
D D
CTCSS code table
(unit: Hz)
CH Freq. CH Freq. CH Freq. CH Freq.
01 67.0 11 97.4 21 136.5 31 192.8
02 71.9 12 100.0 22 141.3 32 203.5
03 74.4 13 103.5 23 146.2 33 210.7
04 77.0 14 107.2 24 151.4 34 218.1
05 79.7 15 110.9 25 156.7 35 225.7
06 82.5 16 114.8 26 162.2 36 233.6
07 85.4 17 118.8 27 167.9 37 241.8
08 88.5 18 123.0 28 173.8 38 250.3
09 91.5 19 127.3 29 179.9 - - - OFF
10 94.8 20 131.8 30 186.2
✔
What is CTCSS (Continuous Tone Coded Squelch System)
GROUP MODE
?
CTCSS (Continuous Tone Coded Squelch System) GROUP
MODE allows communication with silent stand by. Only signals
containing a specific group code can open the squelch.
This conveniently eliminates unwanted audio and is useful in group
activities or security related activities where unwanted output can
be a problem. Note that CTCSS group mode is not private—any-
one can receive your calls.
The IC-4088E is equipped with 38 tone codes for CTCSS GROUP
MODE use. Selecting a code applies it to all 69 operating channels.
Each push of [PTT] superimposes your group code over your trans-
mit signal; and, only signals containing the same code can open
your squelch. To temporarily hear all signals (including noise) push
and hold [MODE]. Do not use CTCSS GROUP MODE if you want
to be able to hear signals on all channels.
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