WTVN (610 AM) – branded as "News Radio 610 WTVN" – is a commercial talk radio station licensed to Columbus, Ohio. Owned by iHeartMedia, the station serves the Columbus metro area. The WTVN studios area located in Downtown Columbus, and its transmitter site is near Obetz. In addition to a standard analog transmission, the station simulcasts over the HD digital subchannel of co-owned 93.3 WODC, and streams online via iHeartRadio. WTVN began broadcasting in HD Radio in June 2005, but the in-band on-channel subcarrier was discontinued by 2015. With 5,000 watts of power, during the day the station can be heard as far away as Indianapolis, Fort Wayne, Detroit, and Cleveland. At night, a directional antenna protects stations operating on the same frequency, including KCSP in Kansas City, WTEL in Philadelphia, and WIOD in Miami. The nighttime signal is primarily radiated northward over central Columbus, and outlying suburbs in the direction of the nulls experience a degraded signal. Programming WTVN's programming is largely made up of co-owned Premiere Networks' nationally syndicated talk shows, including The Clay Travis and Buck Sexton Show, The Glenn Beck Program and Coast to Coast AM with George Noory live and The Sean Hannity Show on tape delay. WTVN has two local weekday talk hosts: Brandon Boxer is heard in morning drive time and Mark Blazor hosts afternoons. At night, WTVN also carries The Mark Levin Show from Westwood One. Weekends feature shows on money, health, real estate, guns, home repair, cars and the law. Weekend syndicated programs include In the Garden with Ron Wilson, This Morning, America's First News with Gordon Deal and Sunday Night with Bill Cunningham. World and national news is supplied by ABC News Radio. History Effective December 1, 1921, the Department of Commerce, which regulated radio at this time, adopted regulations setting aside two wavelengths for use by broadcasting stations: 360 meters (833 kHz) for "entertainment" programs, and 485 meters (619 kHz) for "market and weather" reports. WTVN's first license, as WBAV, was issued on April 29, 1922 to the Erner & Hopkins Company at 146 North Third Street in Columbus, for operation on 360 meters. The WBAV call letters were randomly assigned from an alphabetical roster of available call signs. The station made its formal debut on the evening of May 8, 1922, which the Columbus Dispatch heralded as "a success from every standpoint". A few months after receiving its