Volume Set Tone

This button-press causes one-or-the-other of the following radio behaviors:

When the Volume Adjust Tone Offset field is disabled, this button-press allows the radio-user to sample the radio's current volume level for incoming transmissions unmuting to the radio's speaker. When this button is pressed, the tone sounds at the radio's current setting for as long as the button is held; as the user adjusts the volume, the tone’s audio level is simultaneously adjusted.

Or

When the Volume Adjust Tone Offset field is enabled, this button-press allows the radio-user to sample the volume level of the radio's alert tones. The radio's alert tone volume can vary from the radio's current volume setting for incoming transmissions based-on the Radio Wide, Volume Offset (DB) setting. Therefore, when this button is pressed, a tone sounds at the radio's current volume level for incoming transmissions (plus or minus the Volume Offset (dB) amount) for as long as the button is held; as the user adjusts the volume, the tone’s audio level is simultaneously adjusted.