NHK General TV JOAK-DTV Launched February 1, 1953 Owned by NHK Picture format 480i (4:3 SDTV) 1080i (16:9 HDTV) Country Japan Broadcast area National Headquarters NHK Broadcasting Center, Shibuya, Tokyo, Japan Availability Terrestrial Digital terrestrial Channel 1 (Tokyo), channel 3 in prefectures where a commercial station operates on channel 1