Hytera Mt680 Tetra Mobile Terminal Owners Manual R4 0 New Jun 2026

Rotate the Volume Control knob clockwise to increase the volume and counter-clockwise to decrease it. Selecting a Talkgroup Press the key. Navigate to the Talkgroups folder.

A: Press the Volume Control/Group Selector knob to enter group selection mode, rotate the knob to select your desired group, and press the knob or OK key to confirm. hytera mt680 tetra mobile terminal owners manual r4 0 new

A: Long press the dedicated Emergency key located on the top of the control head. Rotate the Volume Control knob clockwise to increase