Antenna housing. JAPAN BUILT. A kit that contains all the necessary components to mount the Radio Antenna Mast to it's mounting point. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Radio Antenna. Radio Antenna Base. Base. Mast Hardware Kit. Mast Nut. mount kit. Housing, Telephone A. Included with: Antenna, Antenna cover, Antenna assembly.