Icom IC-F3021T/S Instruction Manual page 13

EMERGENCY KEYS
Push and hold to transmit the emergency call.
• The transceiver can transmit the emergency call silently or audibly
depending on the pre-setting. Ask your dealer for details.
• When the emergency call transmits with beeps, the emergency
text is displayed on the LCD if programmed.
• If you want to cancel the emergency call, push and hold the key
again before transmitting the call.
• The emergency call is transmitted one time only or repeatedly until
receiving a control code, depending on the pre-setting.
SURVEILLANCE KEY
Push to turn the surveillance function ON or OFF.
When this function is turned ON, the beep is not emitted and
the LCD backlight does not light when a signal is received or
a key is pushed, etc.
SIREN KEY
Push to emit a siren.
TX CODE CHANNEL SELECT KEY
Push to enter the ID code channel selection mode directly.
Then set the desired channel using [CH Up]/[CH Down].
(p. 13)
TX CODE CHANNEL UP/DOWN KEYS
Push to select a TX code channel directly.
SCRAMBLER FUNCTION
Push to toggle the voice scrambler function ON and OFF.
PANEL DESCRIPTION
USER SET MODE KEY
➥ Push and hold for 1 sec. to enter user set mode.
• During in the user set mode, push this key to select an item that
is enabled by your dealer, and change the value or condition by
pushing [CH Up] or [CH Down].
➥ Push and hold this key for 1 sec. again to exit user set
mode.
User set mode is also available via the 'Power ON function.'
Refer to (p. 14) also.
OPT OUT KEYS
Push to control the output signal level of the optional ports in
the optional unit connector.
OPT MOMENTARY KEYS
Controls the output signal level of the optional ports in the
optional unit connector while pushing and holding this key.
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