.
-6 GROUP MODE (CTCSS)
. Setting the group code
The IC-4008A is equipped with 38 group codes. Group mode op-
eration provides communication with silent standby since you will
only receive calls from group members using the same group num-
ber.
First of all, set the same group code number for all group member's
transceivers.
Turn ON the group mode operation:
CD Push [MODE] to enter set mode.
."--- " (group mode OFF) appears on
the display.
enPush [UP]/[A] or [DOWN]/["'] to select
the desired code number.
WPush [MODE] to set the group code
number.
Cancel the group mode operation:
CD Push [MODE] to enter set mode.
.Code number disappears on the dis-
play.
enPush [UP]/[A] or [DOWN]/["'] to select
"---" (groupmodeOFF).
W Push [MODE] to cancel the group
mode.
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~NOTE: Only stations with the same group channel number can
~be heard during group mode operation, even when the busy in-
~ dicator appears on the display.
11
CTCSS: Continuous ToneCoded Squelch System 6
II' What is CTCSS (Continuous Tone Coded Squelch Sys-
tem) GROUP MODE?
~
J
CTCSS (Continuous Tone Coded Squelch System) GROUP
MODE allows communication with silent stand by. Only signals
containing your 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-anyone can receive your calls.
The IC-4008A is equipped with 38 tone codes for CTCSS
GROUP MODE use. Selecting a code applies it to all 14 oper-
ating channels. Each push of [PTT] superimposes your group
code over your transmit signal; and, only signals containing the
same code can open your squelch. To temporarily hear all sig-
nals (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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