Carson takes over the midday shift (10 a.m. to 3 p.m.) vacated by Heather Walters who left the station last week.
Carson starts at Fresh on February 7.
She comes to Fresh after many years at WLTW/Lite FM. At her most recent stint with the Clear Channel powerhouse, Carson was co-host of the morning show from 2007 to 2009.
“I am thrilled to become a part of CBS Radio and the team at Fresh. I am even more thrilled to be working once again for program director Jim Ryan,” Carson said in a statement, “He has given me more opportunities in New York Radio than anyone and he is great to work for. I love his vision for Fresh and can’t wait to be a part of it.”
Carson also spent time in New York at the now-defunct “Big 105″ and WAXQ/Q104.3.
“There is nobody who can relate to the Fresh audience better than Karen. Her busy life as a wife, mother of three young children and on air talent reflects exactly what our listeners go through each day,” Ryan said. ”Her vast experience in New York radio enables her to be a valuable personality representing our station and advertisers. We have found the absolute best person to get New Yorkers through their workday.”