: Known for its rugged die-cast aluminum chassis and high resistance to physical impact. Power/Battery : Originally used Ni-Cad batteries

: Rotate the top-mounted knob clockwise to click the unit on. Continuing to rotate increases the volume.

: Press and hold the Push-to-Talk (PTT) button on the side of the radio. Wait approximately one second before speaking to ensure the transmission is clear. Receiving : Release the PTT button to listen. Programming the Radio