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CitySan Juan, Puerto Rico
Broadcast areaSan Juan–Caguas–Guaynabo metropolitan area
BrandingWOSO Radio
SloganListen Smart
Frequency1030 kHz
First air dateNovember 21, 1977
Last air dateOctober 21, 2014
FormatNews Talk Information
Power10,000 watts unlimited
Facility ID9412
Transmitter coordinates18°22′7″N 66°15′17″W / 18.36861°N 66.25472°W / 18.36861; -66.25472Coordinates: 18°22′7″N 66°15′17″W / 18.36861°N 66.25472°W / 18.36861; -66.25472
Callsign meaningW Oso (Spanish for "bear")
AffiliationsABC Radio
CBS Radio
ESPN Radio
Westwood One
OwnerSherman Broadcasting Corporation
WebsiteArchive of wosoradio.net

WOSO (1030 kHz) was a commercial AM radio station broadcasting a News Talk Information radio format. Licensed to San Juan, Puerto Rico, United States, it served the San Juan–Caguas–Guaynabo metropolitan area. The station was owned by Sherman Broadcasting Corporation, with Sherman Wildman as president. It featured local news-talk shows and syndicated programming from ABC Radio, CBS Radio, ESPN Radio and Westwood One.

WOSO was the only radio station in Puerto Rico that broadcast in English full time. (AM 1190 WBMJ is a Christian radio station broadcasting in both English and Spanish.) until the K-LOVE station WCAD.

On October 21, 2014, after 37 years broadcasting on 1030 AM, WOSO signed off. The transmitter had been vandalized and the Puerto Rico Electric Power Authority was forced to shut down the station. As of October 22, 2014, WOSO is silent. After an initial effort to revive the station as an online stream, nothing further has been heard.


In 1993, Sherman Wildman purchased WOSO for a reported sale price of $1.2 million.[1]


  1. ^ "PUERTO RICO: New English-language radio station proposed". Caribbean Update, available by subscription from HighBeam Research. 1994-12-01. Archived from the original on 2012-10-20.

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