The present invention relates to a method for setting a non-duplicate broadcast channel, and tunes a broadcast channel through automatic frequency tuning to store tuning data, AGC voltage data, and packet data of a broadcast channel in which a simultaneous signal exists, and then to packet data. Compares to finds a broadcast channel having the same broadcast, compares the AGC voltage data, and deletes the tuned data of the remaining broadcast channels from memory except for the optimal broadcast channel tuned data among the broadcast channels having the same broadcast, thereby removing the same broadcast. The conventional inconvenience of manually deleting the tuning data of the broadcast channel is eliminated, and the broadcast channel is set by comparing the signal strength (AGC voltage) without depending on the intention of the viewer. will be.
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