122 BASIC OPERATION■ Emergency transmissionWhen [Emergency] is held down for the specified time pe-riod*, the emergency signal is transmitted on the specifiedemergency channel once, or repeatedly.When no emergency channel is specified, the call is transmit-ted on the operating channel.The repeat emergency signal is automatically transmitteduntil you turn OFF the power.Depending on the preprogramming, receiving a matching5-tone code cancels the transmission.If you want to cancel the Emergency function, hold down[Emergency] for the pre-programmed time period again be-fore transmitting the call.If your transceiver is programmed for Silent operation, youcan transmit emergency calls without the beep sounding andthe LEDs lighting.IMPORTANT: It is recommended to set an emergencychannel individually to provide the certain emergency calloperation.D NOTESDepending on the preprogramming, the following functionsare automatically activated. Ask your dealer for details.•AutoTXfunctionAfter the emergency call transmission, audio from the micro-phone is automatically transmitted for a specified time pe-riod.*•TheHM-148GorHM-152handmicrophoneisrequired.•AutoRXfunctionAfter the emergency call transmission, the transceiver standsby in the audible mode for the specified time period.** Depending on the preprogramming. Ask your dealer for de-tails.