What is "ksex"

KSEX, also known as, KSEXradio, was an online radio station whose programming was about pornography, the adult industry, and other sexual topics, it was one of the only adult Internet radio stations specializing in news and current events in the United States pornography industry. The current company is a successor to the original broadcaster. The name is an imitation of the four-letter call signs used by U.S. radio stations; those beginning with K- are located in the west of the country.