Icom IC-F3031S / F4031S Instruction Manual - Page 18

3 BASIC OPERATION ■■Priority A channel selection Depending on the presetting, the Priority A channel is selected each time the transceiver power is turned ON. ■■Man Down Emergency Call This function requires the optional UT-124R man down unit. When the transceiver has been left in a horizontal position for the specified time period*, the transceiver enters the emergency mode, and then the countdown starts. After the specified time period* has passed, an emergency call is automatically transmitted once, or repeatedly. If the transceiver is placed in a vertical position before the first transmission, the transceiver exits the emergency mode and the emergency call is cancelled. IMPORTANT: It is recommended to set an emergency channel individually to provide the certain emergency call operation. * Depending on the presetting. Ask your dealer for details. ■■Stun function When the specified ID, set as a stun ID or kill ID, is received, the stun function is activated. When the stun ID is received, the transceiver becomes unusable. Entering of the password (p. 8) or receiving a specified ID, set as a revive ID, is necessary to operate the transceiver again in this case. When the kill ID is received, the transceiver switches to the cloning required condition. Cloning the transceiver is necessary to operate the transceiver again in this case. Stun function is also available with the MDC 1200 signaling system. (p. 14) ■■Scrambler function The voice scrambler function provides private communication between stations. The optional Rolling or Non-rolling type can be available. qqPush [Scrambler] to turn the scrambler function ON. • " " appears. wwPush [Scrambler] again to turn the scrambler function OFF. • " " disappears. 13