6 - 6 MTH800 TETRA Handportable Terminal / Basic Service Manual MAINTENANCE
To install the antenna in the unit
Screw the antenna clockwise to the handset.
Figure 1  Antenna Removal and Installation
Removing and Installing Battery Door and Battery
Recommended tools: no tools are required
To remove the battery door from the unit
 (See Figure 2 / Figure 4)
1. Place the unit facing down on the work area.
2. Press the battery door release button, slide the door towards the bottom of 
the unit and lift it up from the unit.
To remove the battery
(See Figure 3 / Figure 5)
1. Press the battery fastening bridge toward the upper side of the unit.
2. Simultaneously, using other hand, release the battery from its chamber.
Turn counter-clockwise
to detach
Turn clockwise to
attach