(subclass RadioStation BroadcastingStation) | Communications.kif 287-287 | Radio station is a subclass of broadcasting station |
(subclass AMRadioStation RadioStation) | Communications.kif 293-293 | AM radio station is a subclass of radio station |
(subclass FMRadioStation RadioStation) | Communications.kif 298-298 | FM radio station is a subclass of radio station |
(subclass ShortwaveRadioStation RadioStation) | Communications.kif 303-303 | Shortwave radio station is a subclass of radio station |