Sanyo Broadcasting

 is a Japanese television and radio broadcaster in Okayama and Kagawa. The abbreviation, RSK originates in the former name in Japanese (Radio San'yō Kabushikigaisha, ラジオ山陽株式会社). It is affiliated with Japan Radio Network (JRN), National Radio Network (NRN), and Japan News Network (JNN).
Stations.
Radio.
RSK Radio 1494 kHz; 91.4 MHz FM
TV.
Analog.
RSK Okayama Television
Digital.
RSK Okayama Digital Television