The station lost its broadcast license over several violations, the most notable of which was the use of its subsidiary communications authority (SCA) subcarrier facility to transmit the results of horse races on an additional audio channel.
On that day, a Chicago company known as Newsplex, Inc., began using the SCA channel on WCLM to broadcast the results of horse races to businesses.
[6] In April 1963, the FCC issued Drenthe, who by that time was no longer the general manager of WCLM, a subpoena to appear at the station's license revocation hearing.
The commission said that Carol Music had failed to program the station in accordance with the proposals made by the company when applying for its license and had used the SCA for a purpose other than that originally stated, noting that the other violations found in the hearing made it unnecessary for the FCC to consider the horse race results service as a factor in revoking the license.
[15] It denied a petition for reconsideration that November,[16] but Carol Music appealed in federal court, keeping the station on the air into 1965.
[20] The 101.9 frequency did not stay vacant long in the Chicago area, which at the time was the battleground for a complex series of competing applications, interference concerns, and short-spacing complaints.