In 1991 the US company Ascension Technology started work on what was essentially a shrunken version of a traditional inverter, intended to be mounted on a panel to form an AC panel.

By July 2012, the station dropped its longtime adult contemporary format for a hot adult contemporary format as Mediabase moved it to the hot AC panel.

Nielsen BDS and Mediabase still list the station on the AC panel.

This station, however, still sticks to the Canadian hot AC panel of Mediabase & Nielsen BDS.

WTSS is temporarily delisted from Mediabase's hot AC panel when the station goes all-Christmas.

It was removed from Mediabase's add board following rebranding, but Nielsen BDS continued to report CKPC-FM on the Canadian AC panel for a little while.

Since 2011, the station now reports on Nielsen BDS' Canadian hot AC panel.

Most recently, Mediabase delisted the station on the hot AC panel for adds, although the station's playlist still remains on Mediabase.

Even though KFRH stayed hot adult contemporary; Mediabase had it on the hot AC panel before shifting to contemporary hit radio.

When WNIC goes all-Christmas, the station is delisted temporarily from Mediabase's hot AC panel.