Monitor Auxiliary FunctionEnterCall Status Channel AlphanumericOn/OffVolumeMicrophoneSocketT2020 Operator's Manual 1T2020 Front Panel Controls and IndicatorsTo Switch On1 Switch the radio on by rotating the volume knob about one-third of a turn clockwise.You will feel a click as the knob leaves the 'off' position. The display will show apower-up message and the radio then emits two short tones, beep.beep.2 After the front panel display shows its power-up message, the radio will restoreitself to the same state it was in when last turned off.3 Press and hold the monitor key until the ! indicator flashes. Adjust thevolume knob for a comfortable listening level. Depress the key briefly toreturn the radio to the quiet state. The radio will emit a short tone, boop. (It maybe programmed to return to this state after a short while anyway.)4 You will need to finally set the volume level when you receive your first call. Thevolume level of the confidence tones (beeps) is also affected by the volume control,but will not reduce below a preset minimum level.