[1]: 48  At the end of the same year, Yamagata Broadcasting increased its capital by 30 million yen.

In the second survey in August of the following year, this number changed to 56.3% vs. 37%, and Yamagata Broadcasting's advantage further expanded.

[1]: 77–78  In fiscal year 1955, Yamagata Broadcasting achieved profitability for the first time.

[1]: 134  At the same time, in order to cope with the increase in equipment and manpower required for the launch of television, Yamagata Broadcasting began to jointly plan to build a new headquarters with Yamagata Shimbun.

On July 29, 1959, construction began on the Yamagata Shimbun Broadcasting Hall, a new joint headquarters building for both companies.

[1]: 146  On March 21, Yamagata Broadcasting began transmitting experimental television signals.

[1]: 255  On October 1 of the following year, the Yamagata Shimbun Broadcasting Hall was completed.

[1]: 273  According to a ratings survey conducted by Video Research in December 1983, Yamagata Broadcasting won the triple crown of ratings in Yamagata Prefecture with 15% for the whole day, 29.3% for the prime time , and 28.7% for the evening period.

YBC Radio 918 kHz Information correct as of the closure of the analog signals on July 24, 2011.