Control Definitions; [Dial]Knob; [Ptt] Switch; [Vol/Mon] Key - Baofeng UV-3R Mark II Reference

CONTROL DEFINITIONS

[DIAL]Knob

The main tuning Dial is used for setting the operating
frequency, and is used for audio volume level, menu
selections, and other adjustments. To rotate this Dial knob,
pull the knob to unlock the mechanical dial lock, and then
rotate the Dial knob.

[PTT] Switch

Press this switch to transmit, and release it to receive,

[VOL/MON] Key

Press and Hold the key to disable background noise
squelching action to hear very weak signals near the
background noise level.
Just press the key; then rotate the DIAL knob to adjust

[ON/OFF]

Press and hold this key for two seconds to toggle the
transceiver's power on and off.

[F/ALERT]

Press to activate the 'Alternate' key function, such as setting
Scanning, Memory Write Mode etc. Press and hold the
switch to activate the Alarm function.

[MENU/LOCK]

Momentarily press the key, to enter the MENU. Rotating the
DIAL knob, will access different MENU functions. Press
and Hold the key to activate the Key Lock or to disable the
Key Lock. (Note: After the keypad is locked, [F/ALERT],
[UV MODE], [LAMP/FM] keys will be locked.)
Baofeng UV-3R Mark II Reference 1