split the cases by gently pulling apart

be careful of the 2 small extrusions that help to make the seal for the antenna

the batt. compartment latch and it's metal hinge pin are sandwiched in between 2 molded extrustions that form the hinge mount pount (between the 2 cases)

catch the latch and latch pin as you split the cases

BE CAREFUL - there is a pair of wires going to what looks like a small motor and some kind of spinning item