 Remember to know the signs of a heart attack. Check with your local physician if you have any of those issues. It's a message from local physicians, the American Medical Association, and AM960 KLTF Little Falls. AM960 KLTF Little Falls first broadcast on October 8, 1950. The AM960 KLTF signal reaches 55 counties in central Minnesota from Cass County to Douglas County to Pine County and the Twin Cities.