WordNet (r) 3.0 (2006):

radio station
    n 1: station for the production and transmission of AM or FM
         radio broadcasts

Moby Thesaurus II by Grady Ward, 1.0:

27 Moby Thesaurus words for "radio station":
   AM station, FM station, RDF station, advance base,
   clear-channel station, direction-finder station, inner station,
   launching base, lunar city, moon station, outer station,
   radar station, radar tracking station, radio mirror,
   radio relay station, relay station, research station,
   shortwave station, space airport, space dock, space laboratory,
   space station, spaceport, studio, studio plant, tracking station,
   ultrahigh-frequency station