Hi K69
The Hi K69 Radio Station Building, is a radio transmitter building located in Fort Carson, San Andreas. The radio station is not used for the main radio stations in the game, and inaccesible by the player. The reference 'K69' is another sexual refernce and is another one of Rockstars jokes. The building itself is very small and could not possibly be a radio station's building.
However it is the only know radio transmitter in the whole of Bone County.