Broadcasters Seek Ratings Reform

Four of the largest Spanish-language radio broadcasters called on Arbitron Inc. to reform its measurements, saying the ratings service badly undercounts their audience.

Hispanic Broadcasting Corp., Spanish Broadcasting System Inc., Entravision Communications Corp. and Radio Unica Communications Corp. said Arbitron should set a timeline for when it would begin weighting its audience samples according to listeners’ language preference. The companies called on Arbitron to expand its sample sizes, saying that would more accurately reflect the market.

Arbitron said it was up- dating its technology and methods to measure audiences’ language mix but had no deadline.