620 AM KEXB the Business Experts of North Texas! KEXB is operated by Salem Media Group, America's largest radio operator specializing in Christian, Family Themed, and Business Formatted Radio Stations. 620 AM KEXB broadcasts 24 hours per day providing the Dallas/Fort Worth and North Texas areas with credible business news and valuable information. Our programming includes daily shows hosted by some of the most respected business talk personalities in the industry.