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Wmc-fmWMC (99.7 FM, known as "FM 100") is a "Hot AC" radio station serving the market of Memphis, Tennessee. The station is notable for being an FM "superpower," with a transmitter that greatly exceeds current Federal Communications Commission restrictions. Of stations in the FCC's Zone II, WMC is the most powerful. The station is operated by Infinity Radio, which is owned by media giant Viacom. Taking beam tilt into account, the station's effective radiated power is rated at 300,000 watts horizontal polarization and 100,000 watts vertical. The station's transmitter is 277 meters (909 feet) high. Current FCC restrictions were passed in 1962 and mandate a 100 kW maximum across most of the country on the FM band (though some of the more densly populated areas are limited to 50 kW). The station is calculated to exceed power restrictions by 4.6 decibels. However, WMC was grandfathered in, since it had started broadcasting on the FM band on May 22, 1947 and was upgraded to its current power level prior to 1962. External links
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