CHST-FM (102.3 MHz) is a Canadian radio station in London, Ontario.

Due to CHST's low ERP relative to some London area radio stations, its broadcast signal covers only Middlesex, Elgin, and Oxford counties.

The station's coverage to the west is impeded by co-channel WGRT in Port Huron, Michigan.

On June 21, 2010, CTVglobemedia and Glassbox announced it had entered into an agreement to sell the station to Rogers Media.

[2] On September 12, 2012, Rogers received approval to increase the station's effective radiated power from 5,840 to 20,400 watts (directional antenna with a maximum ERP from 12,100 to 100,000 watts), and change its class from B1 to C1.