WIOQ (102.1 FM) is a commercial radio station in Philadelphia, Pennsylvania. The station broadcasts a Top 40 (CHR) radio format and is owned by iHeartMedia. The studios and offices are on Presidential Boulevard in Bala Cynwyd. The station carries several nationally syndicated shows, including Elvis Duran and the Morning Show. WIOQ has an effective radiated power (ERP) of 27,000 watts. The transmitter site is located off Wigard Avenue in the Roxborough section of Philadelphia. WIOQ broadcasts using the HD Radio hybrid format, with the HD2 digital subchannel airing Russian language "DaNu Radio" and the HD3 subchannel carrying iHeart's LGBTQ national format "Pride Radio" with some local programming as well. History 1940-1968: Early Years In May 1940, the Federal Communications Commission (FCC) authorized an FM band effective January 1, 1941, operating on 40 channels spanning 42–50 MHz. The FCC granted the WFIL Broadcasting Company a construction permit for a new FM station at 45.3 MHz on February 4, 1941, which was assigned the call sign W53PH. W53PH made its debut broadcast on November 11, 1941, and was formally licensed by the FCC on September 9, 1942. At the time of its start, it was announced that the station's daily 2 P.M. to 8 P.M. schedule would rarely simulcast its AM sister station 560 WFIL, and "approximately 82 percent of the station's time on the air is being devoted to fine music". Effective November 1, 1943, the FCC modified its policy for FM call signs, and the station call letters were changed to WFIL-FM. After the FCC created the current FM band on June 27, 1945, the FCC granted temporary authority for operation on 99.9 MHz beginning on December 29, 1945. The station's license was assigned to Triangle Publications, effective March 1, 1946. At the time, WFIL (560 AM) was owned by Triangle Publications, which published The Philadelphia Inquirer daily newspapers and TV Guide magazine. WFIL-FM mostly simulcast the AM station in its early years. The FCC issued a new construction permit on June 10, 1946, for permanent operation on 99.9 MHz. However, on June 27, 1947, the FCC reallocated the station to 102.1 MHz and authorized temporary operation on the new frequency. On February 5, 1948, the FCC granted Triangle Publications permission for the station to cease broadcasting on 45.3 MHz. A new construction permit was issued by the FCC for permanent operation on 102.1 MHz on September 29, 1948, followed