User's Guide

U3 USER GUIDE
10
1. PREPARATION
1.1 CHARGING THE BATTERY
1.1.1 Before Attaching
Please make sure your U3 radio is turned off before attaching the battery pack. Before using,
please charge the battery pack with U3 cradle charger for a minimum of 16 hours. This ensures
maximum performance.
Warning:
1. Do not charge the battery pack in a hazardous environment: it may cause an explosion.
2. To avoid damaging the radio, NEVER release or attach the battery pack if the radio is wet
or covered with dust.
1.2 INSTALLING THE ANTENNA
1.2.1 Attaching The Antenna
1. Please make sure the radio is turned off while attaching
the antenna.
2. As the picture shown, hold the base of the antenna and
turn the antenna clockwise into the connector on top of
the radio.
3. Keep turning the antenna clockwise until secured.
Note: Never transmit without the antenna, this may damage the radio.
1.2.2 Detaching The Antenna
1. Please also make sure the radio is turned off while detaching the antenna.
2. As the picture shown, turn the antenna counter-clockwise to remove it from the radio.
Attach
Detach