Icom IC-400PRO Instruction Manual page 21

To cancel the group mode operation:
q While in Function mode, push [ O ] (Bank/Func) for 1 sec.
to enter Set mode.
• Push [ O ] (Bank/Func) for 1 sec. to enter the transceiver into
Function mode.
w Push [MONI] for 1 sec. to enter the individual setting.
e Push [MONI] several times until "CT" appears.
r Push [DUP] to select "OFF" (group mode OFF).
Push [DUP]
t Push [MONI] for 1 sec. to exit the individual setting, then
push [ O ] for 1 sec. to exit Set mode.
• The under bar indicators disappear.
D D Group code/frequency table
Code Freq. Code Freq. Code
01 67.0 10 94.8 21
--- 69.3 11 97.4 22
--- 12 100.0 23
71.0
02 13 103.5 24
71.9
03 14 107.2 25
74.4
04 15 110.9 ---
77.0
05 16 114.8 26
79.7
06 17 118.8 ---
82.5
07 85.4 18 123.0 27
08 19 127.3 ---
88.5
09 20 131.8
91.5
(unit: Hz)
Freq. Code Freq. Code Freq.
136.5 28 173.8 --- 206.5
141.3 --- 177.3 33 210.7
146.2 29 179.9 34 218.1
151.4 --- 183.5 35 225.7
156.7 30 186.2 --- 229.1
159.8 --- 189.9 36 233.6
162.2 31 192.8 37 241.8
165.5 --- 196.6 38 250.3
167.9 --- 199.5 --- 254.1
171.3 32 203.5 --- OFF
GROUP MODE OPERATION
✔ 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 CTCSS frequency 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—anyone can receive your calls.
The IC-400PRO is equipped with 51 CTCSS frequency for
CTCSS GROUP MODE use. Selecting a CTCSS frequen-
cy applies it to all 40 operating channels. To temporarily
hear all signals (including noise) push and hold [MONI]. Do
not use CTCSS GROUP MODE if you want to hear signals
on all channels.
: Stands for the recommended CTCSS frequency. In
case a frequency other than at left is used, sometimes
the squelch system may not performed correctly.
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