4545454545Do not disturb can also be assigned to a function key. If so,pressing the key toggles do not disturb on and off.Dynamic power controlDynamic power control optimises the radioís power use byreducing the transmit power in high signal strength areas.If assigned to a function key, pressing the key togglesdynamic power control on and off.Handset operationThe radio can be operated as a normal radio where you holdthe radio with the microphone about 15 cm away from yourmouth. It can also be operated like a telephone handset innoisy environments or when privacy is required. However,ensure that while using the radio in handset mode, you donot hold the speaker pressed against your ear and theantenna does not touch your body.Press the assigned function key to activate handset mode.The handset symbol ( ) will appear in the display.Handset mode will automatically turn off after a prepro-grammed period of inactivity. You can also turn off handsetmode by pressing the function key.Volume overrideYour radio may be preprogrammed so that the functionkeys are used as volume up and down keys while in handsetmode.