Topic summary
Callsign
Extracted from the Wikipedia article Call sign.
Broadcasting
Most European and Asian countries do not use call signs to identify broadcast stations, but Japan, South Korea, Indonesia, the Philippines and Taiwan do have call sign systems. Spanish broadcasters used call signs consisting of E followed by two letters and up to three digits until the late 1970s. Portugal had a similar system, their callsigns beginning with C; these also ceased to be used in the 1970s. Britain has no call signs in the American sense, but allows broadcast stations to choose their own trade mark call sign up to six words in length.