Because this is an item that the player will be able to carry around in their inventory, it must be added to the OBJECT file. The name of the file is a little confusing - it actually has nothing to do with what we normally refer to as objects (screen objects), but it contains the list of names of inventory objects (which I always refer to as inventory items). The name of item 1 should be set to "portable radio". This is the name that will be displayed in the inventory screen when the player has the radio.