Most stations held their FM license by simulcasting the programming of the AM sister station.

The station was an extension of the AM sister station which has been on the air since 1956 providing nationally recognized Christian programming.

It is the last FM radio station in Montreal to still be related to its original AM sister station.

Most of these formats were also simulcast on their former AM sister station at 1560 AM.

In the beginning, WLUM played disco and soul music, though a different format than its AM sister station.

It is the AM sister station of TFM Radio.

It is the AM sister station of The Pulse of West Yorkshire.

The owners relaunched the FM signal on the 95.3 frequency in 1964, with distinct programming from its AM sister station.

The station, like its AM sister station, was originally licensed to serve the community of Preston, Minnesota.

The callsign KABQ has also been used by its AM sister station 1350 for several decades.