Three. Mudanjiang TV Station was established on July 25th, 1984. Television signals cover 6 counties in Mudanjiang City, covering an area of 40,000 square kilometers and a population of 2.6 million. Mudanjiang TV Station has three channels. A channel is also called a channel. A channel is a channel through which signals are transmitted in a communication system and a transmission medium through which signals are transmitted from a transmitter to a receiver. This is the definition of narrow channel.