The station's transmitter site is a single-tower non-directional antenna in nearby West Monroe, Louisiana.

KMLB operates with 4,000 watts by day, covering parts of Louisiana, Arkansas and Mississippi.

[3] But because AM 540 is a clear-channel frequency reserved for Canada and Mexico, the station must greatly reduce power at night to 26 watts.

[10] When Jimmie Noe died from cancer in 2005, the remaining family members agreed to place the stations up for sale and exit broadcasting.

The station began operating from a new transmitter site, and switched from a directional to a non-directional antenna, resulting on a daytime power reduction from 5,000 to 4,000 watts, while the nighttime power was decreased from 1,000 to 26 watts, with a corresponding reclassification of KMLB as a "Class D" facility.