KSGR (91.1 FM) is a non-commercial radio station licensed to Portland, Texas, United States, and serving the Corpus Christi metropolitan area. It is branded as "Solid Ground Radio" with a Christian radio format, and is owned by the Calvary Chapel of the Coastlands, Inc. "Solid Ground" is a reference to the Biblical parable of the "Two Builders." The studios and offices are on Rodd Field Road in Corpus Christi.
KSGR is a Class C3 station with an effective radiated power (ERP) of 5,400 watts.