CJDL-FM

By 1993, CKOT had hoped to migrate to the FM and had its hopes set for 102.3 MHz. However, that frequency went to CKDK-FM in Woodstock. The station had been considering a number of solutions to fix its daytime-only signal on AM. One possible solution was to use AM 1510 in the day and another frequency at night, and at one point, a move to AM 1200 24/7 was considered.

In 1999, the station lost another chance to move to FM. By this time, it had become a country music station, and wanted to move to 102.3 MHz (occupied by CKDK-FM Woodstock), but this was awarded to CHUM Limited for their London, Ontario, rebroadcast transmitter.

In 2005, the station had received approval to migrate to FM. The station had proposed to occupy the frequency of 104.7 MHz, but this was awarded to a new station in Woodstock. The station had to find an alternate FM frequency. Its application for FM 104.7 meant it would have operated at 2,300 watts (with a maximum of 5,000 watts), and an antenna height of 163.5 metres (sharing the same tower as CKOT-FM). The station had also been granted a temporary permit to operate at 10 kW at day and 10 kW at night on the 1200 kHz frequency as well, a request that had previously been declined.

CKOT has also been able to broadcast on very low power at night, to Tillsonburg and Ingersoll, partially shedding its daytimer status, broadcasting at 20 kW in the daytime and 10 kW at night, on the same frequency (1510 kHz), as well as on 1200 kHz, as a temporary measure to cure the station's problem of being a daytimer, until it could find an available FM frequency.[3]

In 2006, the CRTC had opened up the frequency of 107.3 FM for a new station in Tillsonburg,[4] and had approved of CKOT's owners to simulcast CKOT on that frequency during the day only, much like how CKOT-FM had migrated to the FM band in the early 1970s. The approval of an FM translator for CKOT was not without interventions.

Byrnes Communications, owners of nearby CHCD-FM in Simcoe and CIHR-FM in Woodstock, protested that an FM translator for CKOT would stall CIHR-FM's growth, as it has been on the air for "less than a year", and had not become an established station yet, unlike CKOT (despite being a daytimer, it has been around since 1955), particularly because CKOT's signal would be increased to Ingersoll, Woodstock, St. Thomas and parts of London, where CIHR-FM contains its targeted audience.

Tillsonburg Broadcasting Company gave a rebuttal, which was that Oxford County, Woodstock and Ingersoll are a part of the London radio market, and it is allowed to have an FM broadcast translator, especially with CRTC approval, given its longtime technical restrictions of being a daytimer AM station. The company did admit that converting CKOT to the FM band would result in a change of its radio contour (listening area), but would not adversely impact CIHR-FM, as its signal would just barely reach Woodstock. In this manner, TBCL sees no problems with this situation, especially since CIHR-FM will be able to establish itself, people in Woodstock can still listen in (though the listening audience in Woodstock is relatively small), and (probably most importantly) CKOT-AM can finally move to the FM dial and fix its previously mentioned technical limitations.

The CRTC's view is that CKOT establishing an FM-band translator, and then moving to the FM band completely is in the best public interest, as it will increase its audio quality, it will be able to broadcast its country music and news to Tillsonburg and area at night, and no stations will be adversely affected. It further assured Byrnes Broadcasting Inc. that the radio contours for 107.3 FM were smaller than the ones for 104.7 FM (which Byrnes had beaten Tillsonburg Broadcasting for to establish CIHR-FM in the first place). The commission had further stated that the impact would be minimal on CIHR-FM (an adult contemporary station), as CKOT is a traditional country music station, and a move to FM would help "repatriate" listeners who tune into out-of-market country music stations from London, Hamilton, and even across the lake in Erie, Pennsylvania. The CRTC had also stated they "usually" place a restriction as to how much simulcasting is normally given to an FM translator of an AM station, but they granted an exception in the case of CKOT, because of its limitations.

In short, the CRTC has given approval for CKOT to convert to the FM band on 107.3 FM with an ERP of 4.5 kW, and allows for continued night-time (24/7) operation on 107.3 FM, but on the condition that it simulcasts on 1510 AM at all times during the daytime. The station is still technically licensed as CKOT on 1510, though its primary signal is now CJDL-FM.

On August 1, 2007, at 5:00 a.m. CKOT made its move to 107.3 FM with the call letters CJDL-FM, to simulcast the AM 1510 signal.[5] On February 17, 2013, CKOT signed off. It was one of Canada's last remaining daytime AM stations.

On September 27, 2016, Tillsonburg Broadcasting Company announced that it had sold its stations to Rogers Media pending CRTC approval. General manager Carolyn Lamers stated that her grandfather had personally met Ted Rogers when he was younger, and stated that they had "come full circle" with Rogers' purchase of the stations. The CRTC approved the transfer of ownership on July 13, 2017. There were no announced plans to change the formats of either CKOT or CJDL, and Lamers will remain in her position.[6][7][8]