From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
NBS is TV station.
NBS was located in Central City.
Dragon Ball Z
Chaozu, Oolong, and Turtle Hermit watched NBS in "A Handy Trick". M. Hashimoto reported explosions in a city on Amenbo Island, explosions which were actually caused by Artificial Human No. 19 and Artificial Human No. 20.