The tower has a big satellite dish on its top, which rotates as the radio is tuned. The tower's interior is connected with the dish, so that the room with Klaymen and the radio rotates, too.
The Radio Tower serves a passage to the Purple Building. The tower has two doors while the room has only one, which has to overlap either with the tower exit or the Purple Building's entrance. When the radio is in its initial position, the exit is opened, while Klaymen has to determine the other position by visiting the Lake Wall Radio.