2 - Lift the bottom edge
Using a thin tool (for example a razor blade) lift the bottom edge of the back cover.
3 - Slide the top
Carefully slide the back cover towards the bottom of the radio just a few mm then lift the back.
4 - Remove the screws
There are four small screws to be removed. Two black and two shorter silver. One of the black screws secures the aerial.
5 - Remove the inner cover
The inner cover hooks under the aerial so lift up from the side opposite the aerial.