Cadena Salsoul, an entertainment-based salsa radio station, is the leader in Puerto Rico, one of Arbitron's most competitive market (over 70 stations "make the book").
The SalSoul Network, made up of two simulcast FM facilities, has been top rated in every significant demographic since 1986. In the important age groups, the network often doubled the audience of the number two station in this market of 125 stations and 3.5 million persons.
The WPRM FM and WIVA FM network made up the first instance in the U.S. of using two FM signals to cover all of a large market. WPRM covers San Juan and Ponce; WIVA covers Mayagüez and Arecibo. They also added WRIO FM Ponce to the network. Together, they cover the "consolidated" market favored by advertising agencies. Through use of parallel clustering, spots could be sold locally on either signal for smaller retail accounts.