One of the cleverest radio call signs in the United States, KNOW is 91.1 FM Minnesota Public Radio's flagship 24-hour news and information station. The radio station KNOW relays its signal to smaller stations, many automated, throughout Minnesota and a bit into surrounding states.

KNOW is located at the intersection of 7th and Cedar Street in downtown St. Paul. KNOW's sister station, KSJN, is located in the same building. KSJN plays mostly classical music, though their morning show is eclectic. Both stations broadcast Garrison Keillor's Prairie Home Companion live from the Fitzgerald Theater a few blocks away on Saturday evenings.