English16 Basic operationBasic operationThis section describes the basic operation of your radio,including turning the radio on and off, adjusting volume,selecting channels, making calls and receiving calls.Turning the radio on and offA long press of the on/off key turns the radio either on oroff. When the radio is first turned on, the red, green andamber LEDs flash briefly and the radio gives two short beeps.Adjusting the volumeRotate the volume control clockwise to increase the speakervolume and counterclockwise to decrease the volume. Thevolume control also changes the volume level of the radio’saudible indicators.Selecting a channelUse the channel selection keys or to scroll throughthe channel list until the channel or group you wantis displayed.Making a call1 Select the required channel or group using the channelselection keys or .2 Check the green LED.If the green LED is glowing, the channel is busy and youcannot transmit.3 Once the channel is clear (the green LED is off), lift themicrophone off the microphone clip.4 Hold the microphone about 5cm (2 inches) from yourmouth and press the PTT key to transmit.5 Speak clearly into the microphone and release the PTTkey when you have finished talking.Note: You cannot change channels while transmitting.