The story
On November 1, 1967, OHK was founded to exploit a UHF frequency in Okayama, when the first tranche of UHF licenses was being granted across Japan. The company was founded on March 26, 1968.
Its broadcasts started on April 1, 1969 (as TV Okayama) as a primary FNN/FNS and secondary NET/ANN affiliate for the city of Okayama. KSB also began broadcasting on that same date as a primary NET/ANN affiliate for northern Kagawa Prefecture. On April 1, 1979, the Okayama and Kagawa television markets were merged with each other; OHK dropped its secondary affiliation with ANN as it was now able to serve both prefectures, because the two markets combined now had four commercial stations. To mark the occasion, as well as its tenth anniversary, a special program aired that day broadcast from four locations (Takamatsu Mitsukoshi, Takamatsu Port Pier, Uno Port Pier and the OHK studios).
The station began broadcasting in digital on December 1, 2006, and terminated its analog transmissions on July 24, 2011.
From Wikipedia’s article on Okayama Broadcasting, shared under CC BY-SA 4.0.4