Radio WNNX-FM (Rock 100.5)

WNNX (100.5 FM, "Rock 100.5") is an Atlanta radio station that is owned and operated by Cumulus Media. The station broadcasts from the same building as its other Cumulus Atlanta sister stations WWWQ FM 99.7 ("Q100") and 99X. WNNX's main transmitter is located in downtown Atlanta atop the Westin Peachtree Plaza Hotel, the skyscraper well-known for its reflective glass cylinder shape.

pre-1978 to 2001: WHMA-FM ("Alabama 100", country)2001-2008: WWWQ ("Q100", top 40 (CHR))2008–present : WNNX ("Rock 100.5", rock and classic rock)The 100.5 frequency has been in metro Atlanta, licensed to College Park, since early 2001. Before then, the station was licensed to Anniston, Alabama as WHMA-FM, broadcasting as country music station "Alabama 100". (After the move, that callsign shifted to another existing station in that area becoming WHMA-FM "The Big 95", 95.5 MHz)

Interested in moving the station to Atlanta, owner Robert Gammon proposed that it be re-licensed to Sandy Springs, and remain at 100,000 watts ERP (class C). An agreement had already been made with the nearest co-channel station, WSSL-FM in upstate South Carolina for it to move further away, however that station was sold to Clear Channel Communications in the interim and the agreement was negated. Additionally, the Federal Communications Commission (FCC) ruled that Sandy Springs was "not a community", citing its unincorporated status and letters of support from local organizations in Sandy Springs that had "Atlanta" as the address. This was despite the fact that it was (and still is) one of the largest cities in the state.

After exhausting his funds in pursuit of the reallocation, Gammon sold the station to Susquehanna Radio. In a revised application before the FCC, Susquehanna proposed a different city of license, College Park. The FCC approved the application, mostly because the new application changed the class of the station from C (up to 100 kW at 600 meters or 1968 feet) down to C3 (up to 25 kW at 100 meters or 328 feet) to protect the licensed broadcast range of WSSL. Susquehanna was also forced to slightly null the station's signal in the direction of WSSL to stay in compliance with spacing rules. The move created spectrum space for two new radio stations in Alabama, but forced Southern Polytechnic State University low-power station WGHR and Georgia Public Broadcasting repeater W264AE (both 100.7 MHz FM) off the air in the Atlanta area. (Ironically, the 99x brand would later itself be moved to such a low-power repeater station.)

W250BC FM 97.9 is a broadcast translator licensed to Riverdale, although its original 6 watts reached only Morrow, Lake City, most of Jonesboro, and part of Forest Park, skimming only the eastern edge of Riverdale. In early February 2009 it was issued a construction permit to move to the "Richland" site in North Druid Hills and go up to 250 watts (but still not reach Riverdale within its official service contour). In November 2007, the FCC approved the sale of the station by Clark Atlanta University (WCLK FM 90.1) to Extreme Media Group LLC of Woodstock, Virginia. It was then transferred via asset exchange to Cumulus Licensing LLC in mid-February 2009, in return for WZBN FM 105.5 in Camilla, Georgia. In January 2009 it requested special temporary authority (STA) to remain "silent" (off-air) for 60 days due to technical issues. On April 17, the translator station began to rebroadcast the signal of 99X on 97.9 Mhz using common analog FM. Recent FCC regulatory decisions permit such use of a broadcast translator to rebroadcast in standard analog FM the content of a digital-only HD Radio subchannel of another radio station. Some consider such an arrangement to be a loophole in the intent of the FCC regulations, as the regulations were, they argue, designed to require broadcast translators to be used to fill in for reception gaps inside an existing station's licensed coverage area, not to make channels previously accessible only with less common HD Radio receivers now also available to those with standard, analog-only FM radios.