NHK (, Nippon HÅsÅ KyÅkai), or the Japan Broadcasting Corporation, is Japan's public broadcaster. Today it operates two terrestrial television services (NHK General TV and NHK Educational TV), three satellite services (NHK BS-1, NHK BS-2, and NHK Hi-Vision – High-definition TV), and three radio networks (NHK Radio 1, NHK Radio 2, and NHK FM). For audiences overseas it provides services called NHK World.