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Medium wave (MW) is the part of the medium frequency (MF) radio band used mainly for AM radio broadcasting. The spectrum provides about 120 channels with more limited sound quality than FM stations on the FM broadcast band. During the daytime reception is usually limited to more local stations, though this is dependent on the signal conditions and quality of radio receiver used. Improved signal propagation at night allows the reception of much longer distance signals. This can cause increased interference, because on most channels multiple transmitters operate simultaneously worldwide. In addition, amplitude modulation (AM) is often more prone to interference by various electronic devices, especially power supplies and computers. Strong transmitters cover larger areas than on the FM broadcast band but require more energy and longer antennas. Digital modes are possible but have not reached the momentum yet.
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. 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.
A travelers' information station (TIS), also called highway advisory radio (HAR) by the United States Department of Transportation, is a licensed low-powered non-commercial radio station, used to broadcast information to the general public, including for motorists regarding travel, destinations of interest, and situations of imminent danger and emergencies. They are commonly operated by transportation departments, national and local parks departments and historic sites, airport authorities, local governments, federal agencies, colleges and universities, hospitals and health agencies, and for special events and destinations.
The extended mediumwave broadcast band, commonly known as the AM expanded band, refers to the broadcast station frequency assignments immediately above the earlier upper limits of 1600 kHz in International Telecommunication Union (ITU) Region 2, and 1602 kHz in ITU Regions 1 and 3.
MW DX, short for mediumwave DXing, is the hobby of receiving distant mediumwave radio stations. MW DX is similar to TV and FM DX in that broadcast band (BCB) stations are the reception targets. However, the nature of the lower frequencies used by mediumwave radio stations is very much different from that of the VHF and UHF bands used by FM and TV broadcast stations, and therefore involves different receiving equipment, signal propagation, and reception techniques.
KDYA, "Gospel 1190 The Light", is a commercial AM radio station owned by Salem Media Group and licensed to Vallejo, California, serving the San Francisco Bay Area. It broadcasts an urban gospel radio format, and is Northern California's only full-time Urban Gospel station reaching San Francisco, Sacramento, Santa Rosa and Stockton.
The North American Regional Broadcasting Agreement refers to a series of international treaties that defined technical standards for AM band (mediumwave) radio stations. These agreements also addressed how frequency assignments were distributed among the signatories, with a special emphasis on high-powered clear channel allocations.
CHHA is a Canadian radio station, broadcasting at 1610 AM in Toronto, Ontario. Owned and operated by the San Lorenzo Latin American Community Centre, the station airs a Spanish language community radio format branded as Voces Latinas, along with some programming in English, Italian, Portuguese and Tagalog. CHHA's studios are located on Wenderly Drive in the Glen Park neighbourhood of Toronto, while its transmitter is located in the Port Lands neighbourhood at Toronto's waterfront. Its signal is pointed westward to protect CHRN in Montreal and travelers' information stations (TIS) in the United States. CHHA is the highest-powered station in North America to use the 1610 frequency, which is otherwise reserved for TIS in the U.S. and has been unused in Mexico since 2018.
KDZR is a commercial radio station, licensed to Lake Oswego, Oregon, and serving the Portland metropolitan area. The station airs a Regional Mexican radio format and is owned by the Salem Media Group. KDZR's studios and offices are on SE Lake Road in Portland.
KBGG is a commercial AM radio station in Des Moines, Iowa. The station is owned by Cumulus Media and it airs a sports radio format, known as "1700 The Champ".
WLAA is a radio station broadcasting a Regional Mexican format. Licensed to Winter Garden, Florida, United States, it serves the Orlando area. The station is currently owned by Shanti Persaud, through licensee Unity Broadcasting LLC.
KNTS is a radio station broadcasting a Spanish language Regional Mexican format. Licensed to Seattle, Washington, it serves the Seattle metropolitan area. The station is currently owned by Salem Media Group.
KYYS is a radio station broadcasting a Regional Mexican format. The station is licensed to Kansas City, Kansas, United States. It is currently owned by Audacy, Inc. and operations are under an LMA with Reyes Media Group.
WVOJ is a commercial AM radio station, licensed to Fernandina Beach, Florida, and serving the Jacksonville metropolitan area. The station is currently owned by Norsan Consulting And Management, Inc. WVOJ airs a Regional Mexican radio format, largely simulcast with several other radio stations in the Southern U. S., including North Carolina and South Carolina.
KGED is an AM expanded band radio station in Fresno, California. It features a Regional Mexican format. The station is owned by Bendita Eucaristia Radio, Inc. The studios and offices are on West Olive Avenue in Fresno.
KENN is a radio station broadcasting a News Talk Information format. Licensed to Farmington, New Mexico, United States, the station serves the Four Corners area. The station is currently owned by Winton Road Broadcasting Co., LLC and features programming from FOX News Radio and Premiere Radio Networks.
The following radio stations broadcast on AM frequency 1180 kHz: 1180 AM is United States clear-channel frequency; Class A status is held by WHAM in Rochester, New York.
KVNS is a radio station broadcasting a sports format. Licensed to Brownsville, Texas, United States, the station is currently owned by iHeartMedia and features programming from Fox News Radio, Premiere Radio Networks and Westwood One. It shares studios with its sister stations, KHKZ, KQXX-FM, KTEX, and KBFM, located close to the KRGV-TV studios in Weslaco, Texas, while its transmitter is located near Brownsville, Texas.
CHRN is a multilingual radio station which operates at 1610 kHz/AM in Montreal, Quebec, Canada. The station serves as a flagship for Radio Humsafar, an international radio network serving the South Asian diaspora. CHRN is Radio Humsafar's second radio station in the Greater Montreal area, as it also owns CJLV.
References
- ↑ Radio Locator list of stations on 1610
- ↑ "AM Station Classes, and Clear, Regional, and Local Channels". Federal Communications Commission. 2015-12-11. Retrieved 2020-12-15.
- ↑ List of radio stations on 1610 kHz from mwlist.org