Medium wave (MW) is a 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 momentum yet.
Low frequency (LF) is the ITU designation for radio frequencies (RF) in the range of 30–300 kHz. Since its wavelengths range from 10–1 km, respectively, it is also known as the kilometre band or kilometre waves.
In radio, longwave, long wave or long-wave, and commonly abbreviated LW, refers to parts of the radio spectrum with wavelengths longer than what was originally called the medium-wave broadcasting band. The term is historic, dating from the early 20th century, when the radio spectrum was considered to consist of longwave (LW), medium-wave (MW), and short-wave (SW) radio bands. Most modern radio systems and devices use wavelengths which would then have been considered 'ultra-short'.
Effective radiated power (ERP), synonymous with equivalent radiated power, is an IEEE standardized definition of directional radio frequency (RF) power, such as that emitted by a radio transmitter. It is the total power in watts that would have to be radiated by a half-wave dipole antenna to give the same radiation intensity as the actual source antenna at a distant receiver located in the direction of the antenna's strongest beam. ERP measures the combination of the power emitted by the transmitter and the ability of the antenna to direct that power in a given direction. It is equal to the input power to the antenna multiplied by the gain of the antenna. It is used in electronics and telecommunications, particularly in broadcasting to quantify the apparent power of a broadcasting station experienced by listeners in its reception area.
In radio transmission, transmitter power output (TPO) is the actual amount of power of radio frequency (RF) energy that a transmitter produces at its output.
Vatican Radio is the official broadcasting service of Vatican City.
Deutschlandfunk is a public-broadcasting radio station in Germany, concentrating on news and current affairs. It is one of the four national radio channels produced by Deutschlandradio.
A television transmitter is a transmitter that is used for terrestrial (over-the-air) television broadcasting. It is an electronic device that radiates radio waves that carry a video signal representing moving images, along with a synchronized audio channel, which is received by television receivers belonging to a public audience, which display the image on a screen. A television transmitter, together with the broadcast studio which originates the content, is called a television station. Television transmitters must be licensed by governments, and are restricted to a certain frequency channel and power level. They transmit on frequency channels in the VHF and UHF bands. Since radio waves of these frequencies travel by line of sight, they are limited by the horizon to reception distances of 40–60 miles depending on the height of transmitter station.
A broadcast transmitter is an electronic device which radiates radio waves modulated with information content intended to be received by the general public. Examples are a radio broadcasting transmitter which transmits audio (sound) to broadcast radio receivers (radios) owned by the public, or a television transmitter, which transmits moving images (video) to television receivers (televisions). The term often includes the antenna which radiates the radio waves, and the building and facilities associated with the transmitter. A broadcasting station consists of a broadcast transmitter along with the production studio which originates the broadcasts. Broadcast transmitters must be licensed by governments, and are restricted to specific frequencies and power levels. Each transmitter is assigned a unique identifier consisting of a string of letters and numbers called a callsign, which must be used in all broadcasts.
CKLQ-FM is a commercial FM radio station in Brandon, Manitoba, Canada. In addition to its FM signal, it has a nested rebroadcaster at 880 kHz, CKLQ. The two stations simulcast a country format. They are owned and operated by Pattison Media Ltd. CKLQ-AM-FM, along with sister station CKLF-FM, have their radio studios and offices at 624 14th Street East, on Brandon's east end.
CBVE-FM is a Canadian radio station, which broadcasts the programming of the CBC Radio One network at 104.7 FM in Quebec City, Quebec. The station's main transmitter is located at Mount Bélair. Its studios are co-located with its francophone sister stations on Rue St-Jean in Downtown Quebec City.
CHNC-FM is a French-language Canadian radio station located in New Carlisle, Quebec, Canada.
CBJ-FM is a French-language Canadian radio station located in Saguenay, Quebec.
Radio Romania International is a Romanian radio station owned by the Romanian public radio broadcaster Societatea Română de Radiodifuziune that broadcasts abroad. It was created in 1927 and was known as Radio Bucharest before 1989.
The Bod Transmitter is a longwave radio transmitter near Bod, Romania. It broadcasts Radio Antena Satelor (daytime) and Radio România Actualități on 153 kHz.
CFGB-FM is a radio station broadcasting on 89.5 MHz (FM) from Happy Valley-Goose Bay, Newfoundland and Labrador, Canada, and is the local Radio One station of the Canadian Broadcasting Corporation, serving as that network's primary outlet in Labrador. A shortwave relay, CKZN rebroadcasts CFGB's signal to remote areas of Labrador.
CKEN-FM is a Canadian radio station, broadcasting from Kentville, Nova Scotia at 97.7 FM. The station currently plays a country format and is branded on-air as AVR. The station has been on the air since 1947.
The Oxford transmitting station is a broadcasting and telecommunications facility, situated on land 129.5 metres (425 ft) above Ordnance Datum to the north east of the city of Oxford, in Oxfordshire, England. It has a guyed steel lattice mast which is 154.4 metres (507 ft) in height to the top of the main steel structure. The UHF television antenna, which consist of a vertical array of transmitting panels, is mounted above the steel structure. The total height of the mast to the top of this UHF antenna is 165.7 metres (544 ft). It is owned and operated by Arqiva.
CHEQ-FM is a French-language Canadian radio station located in Sainte-Marie, Quebec.
CKGF-2-FM is a Canadian radio station that broadcasts an English-language commercial active rock format at 102.3 MHz (FM) in Grand Forks, British Columbia. The station is currently owned by Vista Broadcast Group.
