It carries The Mark Levin Show from Westwood One weeknights and updates from USA Radio News.
But 990 AM is a clear channel frequency so WGSO must reduce power at night to 310 watts to avoid interference to other stations.
It used the call sign WJMR and was owned by George Mayoral, broadcasting from the Jung Hotel.
In the mid-1950s it was home to disc jockey "Poppa Stoppa," whose program featured a new sound for its time, "Rock and Roll music."
During this time there were local hosts most of the day discussing money and business topics for investors.
Post-Katrina (2007), the station used the "Voice of the Northshore" moniker, aiming its news & traffic reports at St. Tammany Parish.
This was problematic, as the station's signal on the Northshore of Lake Pontchartrain is weak during the day and practically unlistenable at nighttime power.