Icom IC-F4100D Series Instruction Manual page 19

WIDE/NARROW
➥ Push to switch the IF bandwidth to Wide.
• The wide passband width can be selected from 20 or 25 kHz using
the optional cloning software (PMR operation only). Ask your dealer
for details.
➥ Hold down to switch the IF bandwidth to Narrow.
CALL, CALL A, CALL B
Push to transmit a 2/5-tone code.
• Tone call transmission may be necessary before you call another sta-
tion, depending on your signalling system.
• [Call A] and/or [Call B] keys may be available when your system em-
ploys selective 'Individual/Group' calls. Ask your dealer which call is
assigned to each key.
EMERGENCY
Hold down for specified time period to transmit an emergency call.
• The emergency call transmits with beeps, and the LED lights red.
• The transceiver can transmit an emergency call without the beep
sounding and the LED indicator lighting. Ask your dealer for details.
• If you want to cancel the emergency call, hold down the key again
before transmitting the call.
• The emergency call is transmitted one time only, or repeatedly until re-
ceiving an acknowledgement signal, or until the power is turned OFF.
When a matched 5-tone code signal is received, the emergency func- When a matched 5-tone code signal is received, the emergency func-
tion can be cancelled depending on the presetting. (PMR operation
only)
SURVEILLANCE
➥ Push to turn the Surveillance function OFF.
➥ Hold down to turn the Surveillance function ON.
• When this function is turned ON, the beep is not heard and the LED
does not light when a signal is received, or a key is pushed.
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