133 BASIC OPERATIONPriority A channel selection■Depending on the presetting, the Priority A channel is se-lected 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 forthe specified time period*, the transceiver enters the emer-gency mode, and then the countdown starts.After the specified time period* has passed, an emergencycall is automatically transmitted once, or repeatedly.If the transceiver is placed in a vertical position before the firsttransmission, the transceiver exits the emergency mode andthe emergency call is cancelled.IMPORTANT: It is recommended to set an emergencychannel individually to provide the certain emergency calloperation.* 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 unus-able. Entering of the password (p. 8) or receiving a specifiedID, set as a revive ID, is necessary to operate the transceiveragain in this case.When the kill ID is received, the transceiver switches to thecloning required condition. Cloning the transceiver is neces-sary to operate the transceiver again in this case.Stun function is also available with the MDC 1200 signalingsystem. (p. 14)Scrambler function■The voice scrambler function provides private communica-tion between stations. The optional Rolling or Non-rollingtype can be available.Push [Scrambler] to turn the scrambler function ON.q• “ ” appears.w Push [Scrambler] again to turn the scrambler functionOFF.• “ ” disappears.