20 Getting startedAbout the radio controlsThe radio controls are the PTT key, volume control, on/off key,scroll keys, selection keys and function keys. Some keys mayhave functions assigned to both short and long key presses:■ a short key press is less than one second, and■ a long key press is more than one second.See page 60 for further information on the radio controlsduring dual radio operation. The radio controls and theirfunctions are summarized in the following diagram and table.scroll keyson/off keyvolumecontrolmicrophonesocketpress-to-talk(PTT) keyreddisplay speakergreenamberkeypadmicrophoneradio status LEDsfunction keys1 to 4 left selection key right selection keymain menuChannel 12Menualphanumeric keysSymbol Name FunctionPTT key Press and hold to transmit and releaseto listenVolume control Rotate to change the speaker volumeOn/off key Turn the radio on or off with a long press