It is generally recognized that the first radio transmission was made from a temporary station set up by Guglielmo Marconi in 1895 on the Isle of Wight. This followed on from pioneering work in the field by a number of people including Alessandro Volta, André-Marie Ampère, Georg Ohm and James Clerk Maxwell.
WTVN – branded as "News Radio 610 WTVN" – is a commercial news/talk radio station licensed to Columbus, Ohio. Owned by iHeartMedia, the station serves the Columbus metro area. The WTVN studios area located in the McKinley Avenue Corridor northwest of 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.
WLW is a commercial news/talk radio station licensed to Cincinnati, Ohio. Owned by iHeartMedia, WLW is a clear-channel station, often identifying itself as “The Big One”. Its studios are located in Sycamore Township.
CJBC is a Canadian Class A clear-channel station, which broadcasts at 860 AM in Toronto, Ontario. It is that city's outlet of the Ici Radio-Canada Première network. CJBC's studios are located at the Canadian Broadcasting Centre, while its transmitter is located in Hornby.
KQNT is a commercial radio station licensed to Spokane, Washington. It is one of the oldest radio stations in Washington, going on the air in 1922 in Seattle. KQNT offers a talk radio format and is owned by iHeartMedia, Inc. The studios and offices are on East Sprague Street in Spokane.
CBN is a public AM radio station in St. John's, Newfoundland and Labrador, Canada. It carries a news, talk and information format and is the local Radio One station of the Canadian Broadcasting Corporation.
KFBK is a commercial AM radio station in Sacramento, California. It is simulcast on KFBK-FM 93.1 MHz. KFBK-AM-FM air a news-talk radio format and are owned by iHeartMedia, Inc. The studios and offices are on River Park Drive in North Sacramento, near the Arden Fair Mall.
KFAX is a commercial radio station licensed to San Francisco, California, and heard around the Bay Area. Since 1984, the station has been owned by Salem Media Group and programs a Christian radio teaching and talk format.
WOAI is a commercial AM radio station in San Antonio, Texas, which airs a news/talk format. It is owned and operated by locally based iHeartMedia, Inc., and is that company's flagship station. Studios are located in the Stone Oak neighborhood in Far North San Antonio. Its non-directional antenna transmitter site is off Santa Clara Road in Zuehl, Texas.
CBU is a Canadian non-commercial public radio station, in Vancouver, British Columbia. It carries the programming of the CBC Radio One network. The station broadcasts on 690 AM and on 88.1 FM as CBU-2-FM. CBU's newscasts and local shows are also heard on a chain of CBC stations around the Lower Mainland.
WTAG is a radio station in Worcester, Massachusetts. It is owned by iHeartMedia and airs a news/talk format. WTAG's studios are in Paxton and it broadcasts from a transmitter in Holden, Massachusetts. The transmitter operates at 5,000 watts day and night. WTAG programming is simulcast on FM translator W235AV at 94.9 MHz, licensed to Tatnuck.
WKRC is a commercial AM radio station licensed to Cincinnati, Ohio. The station airs a talk radio format, under the branding of "55KRC". Studios are on Montgomery Road in Cincinnati. WKRC operates at 5,000 watts by day and 1,000 watts at night, from a transmitter site in Cold Spring, Kentucky.
CKWX is a commercial radio station in Vancouver, British Columbia, Canada. Owned by Rogers Radio, a division of Rogers Sports & Media, it broadcasts an news/talk radio format branded as CityNews 1130. CKWX's studios and offices are located at 2440 Ash Street in the Fairview neighbourhood of Vancouver.
WDAD is a radio station in Indiana County, Pennsylvania. It is owned and operated by Renda Broadcasting.
WSAI is a Cincinnati, Ohio commercial radio station. Owned and operated by iHeartMedia, its studios, as well as those of iHeartMedia's other Cincinnati stations, are in the Towers of Kenwood building next to I-71 in the Kenwood section of Sycamore Township, and its transmitter site is in Mount Healthy.
WNML is a commercial AM radio station in Knoxville, Tennessee. It is owned by Cumulus Media and it simulcasts a sports radio format with co-owned 99.1 WNML-FM Friendsville. The studios and offices are on Old Kingston Pike in the Sequoyah Hills section of West Knoxville.
CKFR is a radio station in Kelowna, British Columbia, Canada. Broadcasting at 1150 AM, the station airs news/talk and sports formats, and identifies on air as AM 1150 News, Talk, Sports. It is owned by Bell Media.
WIBA is a commercial AM radio station licensed to Madison, Wisconsin. Owned by iHeartMedia, the station airs a Conservative Talk format, under the slogan "Madison's News/Talk Station."
CHCE was a radio station which operated from 1923 to around 1925, in Victoria, British Columbia, Canada.
KRGE is a radio station in Weslaco, Texas. It is owned by Christian Ministries of the Valley and carries a Spanish Christian format known as Radio Vida.