A clear-channel station is an AM radio station in North America that has the highest protection from interference from other stations, particularly concerning night-time skywave propagation. The system exists to ensure the viability of cross-country or cross-continent radio service, and is enforced through a series of treaties and statutory laws. Now known as Class A stations since 1982, they are occasionally still referred to by their former classifications of Class I-A, Class I-B, or Class I-N. The term "clear-channel" is used most often in the context of North America and the Caribbean, where the concept originated.
The FM broadcast band is a range of radio frequencies used for FM broadcasting by radio stations. The range of frequencies used differs between different parts of the world. In Europe and Africa and in Australia, it spans from 87.5 to 108 megahertz (MHz) - also known as VHF Band II - while in the Americas it ranges from 88 to 108 MHz. The FM broadcast band in Japan uses 76 to 95 MHz, and in Brazil, 76 to 108 MHz. The International Radio and Television Organisation (OIRT) band in Eastern Europe is from 65.9 to 74.0 MHz, although these countries now primarily use the 87.5 to 108 MHz band, as in the case of Russia. Some other countries have already discontinued the OIRT band and have changed to the 87.5 to 108 MHz band.
WYPX-TV, virtual channel 55, is an Ion-affiliated television station licensed to Amsterdam, New York, United States and serving New York's Capital District (Albany–Schenectady–Troy) as well as Berkshire County, Massachusetts. The station is owned by Inyo Broadcast Holdings. WYPX-TV's offices are located on Charles Boulevard in Guilderland, and its transmitter is located in the Helderberg Escarpment in New Scotland. The station also serves as the de facto Ion outlet for the Mohawk Valley.
KASW, virtual channel 61, is a CW-affiliated television station licensed to Phoenix, Arizona, United States. Owned by the E. W. Scripps Company, it is part of a duopoly with ABC affiliate KNXV-TV. Both stations share studios on North 44th Street on the city's east side, while KASW's transmitter is located on South Mountain.
KPPX-TV, virtual channel 51, is an Ion Television-affiliated station serving Phoenix, Arizona, United States that is licensed to Tolleson. The station is owned by Inyo Broadcast Holdings. KPPX-TV's offices are located on Camelback Road on the northeast side of Phoenix, and its transmitter is located atop South Mountain on the city's south side.
K18JL-D, virtual channel 25, branded on-air as Good News TV, is a low-powered 3ABN-affiliated television station licensed to Phoenix, Arizona, United States. The station is owned by HC2 Holdings. Its transmitter is located atop South Mountain in Phoenix.
KLSR-TV, virtual channel 34, is a Fox-affiliated television station licensed to Eugene, Oregon, United States. Owned by California Oregon Broadcasting, Inc. of Medford, Oregon, it is a sister station to low-powered, Class A MyNetworkTV affiliate KEVU-CD, channel 23. The two stations share studios on Chad Drive in Eugene; KLSR's transmitter is located on South Ridge.
KSNC, virtual channel 2, is an NBC-affiliated television station licensed to Great Bend, Kansas, United States. The station is owned by Nexstar Media Group. KSNC's news bureau, advertising sales office and transmitter are located along US 281, three miles (5 km) north of Great Bend.
KTOV-LP, UHF analog channel 21, was a low-powered MyNetworkTV-affiliated television station licensed to Corpus Christi, Texas, United States. Owned by the Sinclair Broadcast Group, it was sister to Fox affiliate KSCC and low-powered TBD owned-and-operated station KXPX-LP. KTOV-LP's transmitter was located on Leopard Street in downtown Corpus Christi.
K14RK-D, virtual channel 38, is a low-powered television station licensed to Phoenix, Arizona, United States. The station is owned by Adrián Quiñones. Its transmitter is located on South Mountain.
KSDY-LD, virtual channel 50, is a low-powered Nuestra Visión-affiliated television station licensed to San Diego, California, United States. Owned and operated by International Communications Network Inc, it was a sister station to K09YL.
KTUH is a non-commercial, student-run, listener-supported station in Honolulu, Hawaii. It was Hawaii's first non-commercial FM station, and signed on the air July 7, 1969. Their programming originates from the studios located on the campus of the University of Hawaiʻi at Mānoa. The station runs 24 hours a day all year round and there is always a live DJ producing their programming; the station never switches to prerecorded material. Typically, the programming is divided into consecutive 3-hour blocks with a distinct musical theme per block, usually hosted by a University of Hawaii student or, occasionally, a faculty or community member. As a highly diversified representative station of the people of a multicultural environment, every musical genre is typically touched upon over the course of two or three days of programming, including jazz, assorted Latino sounds, hip-hop, punk, alternative, metal, goth, reggae, electronic, Hawaiian, country, various world music strains, and many more.
KXPX-LP, UHF analog channel 14, was a low-powered TBD owned-and-operated television station licensed to Corpus Christi, Texas, United States. Owned by the Sinclair Broadcast Group, it was a sister station to Fox affiliate KSCC and low-powered MyNetworkTV affiliate KTOV-LP. KXPX-LP's transmitter was located on Leopard Street in downtown Corpus Christi.
KHIZ-LD, virtual channel 39, is a low-powered Court TV-affiliated television station licensed to Los Angeles, California, United States. The station’s transmitter is located atop Mount Wilson, California.
The following television stations broadcast on digital channel 39 in the United States:
The following television stations broadcast on digital channel 43 in the United States:
The following television stations broadcast on digital channel 50 in the United States:
The following low-power television stations broadcast on digital or analog channel 50 in the United States:
The following low-power television stations broadcast on digital or analog channel 39 in the United States: