Back when the 80-90 Docket was compelling all the big signal FMs to either upgrade to Full C or downgrade to C-1, 105.3 took the downgrade (dropped below 300 meters haat), as it could not otherwise move to a TV tower closer to New Orleans, rather than staying on a 350 ft tower in Slidell.
Its coverage should not be any different from the other New Orleans signals; perhaps some tropo bending took the signal all the way to Calciseu Parish.