An exhaust gas turbocharger housing for an engine includes a main turbine housing portion and a throat portion defining an exhaust gas passageway that is in upstream fluid communication with the main turbine housing. This makes it possible to facilitate meltdown of the fuse. The wideband antenna can have low dielectric losses while maintaining a multi-octave bandwidth. These components are all resident to the receiver itself. A database is subsequently for queried generating driving directions based on the destination address and the origin address. The key tops of the button members can be individually surface-treated before assembly, and therefore, a user can easily recognize the kinds of buttons at the time of operation, and an operation mistake can be prevented.