Basic operation 5A b o u t y o u r r a d i oBasic operationThe radio controls are the PTT key, volume control,on/off key, scroll keys, selection keys and function keys.Some keys have functions assigned to both short andlong key presses:The radio controls are the PTT key, power/volumecontrol, channel selector, three-way selector control,scroll keys, selection keys, and function keys. Some keyshave functions assigned to both short and long keypresses: a short key press is less than one second, and a long key press is more than one secondThe radio controls and their functions are described inthe following sections.scrollkeyson/off keyvolumecontrolmicrophonesocketPTT key(press-to-talk)reddisplay speakergreenambermicrophoneradio statusLEDsfunctionkeys 1 to 4 left selectionkeyright selectionkey