In telecommunications, a repeater is an electronic device that receives a signal and retransmits it. Repeaters are used to extend transmissions so that the signal can cover longer distances or be received on the other side of an obstruction. Some types of repeaters broadcast an identical signal, but alter its method of transmission, for example, on another frequency or baud rate.
In a telecommunications network, a link is a communication channel that connects two or more devices for the purpose of data transmission. The link may be a dedicated physical link or a virtual circuit that uses one or more physical links or shares a physical link with other telecommunications links.
A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth. Communications satellites are used for television, telephone, radio, internet, and military applications. Many communications satellites are in geostationary orbit 22,300 miles (35,900 km) above the equator, so that the satellite appears stationary at the same point in the sky; therefore the satellite dish antennas of ground stations can be aimed permanently at that spot and do not have to move to track the satellite. Others form satellite constellations in low Earth orbit, where antennas on the ground have to follow the position of the satellites and switch between satellites frequently.
CBC Radio One is the English-language news and information radio network of the publicly owned Canadian Broadcasting Corporation. It is commercial-free and offers local and national programming. It is available on AM and FM to 98 percent of Canadians and overseas over the Internet, and through mobile apps. CBC Radio One is simulcast across Canada on Bell Satellite TV satellite channels 956 and 969, and Shaw Direct satellite channel 870.
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.
Microwave transmission is the transmission of information by electromagnetic waves with wavelengths in the microwave frequency range of 300 MHz to 300 GHz of the electromagnetic spectrum. Microwave signals are normally limited to the line of sight, so long-distance transmission using these signals requires a series of repeaters forming a microwave relay network. It is possible to use microwave signals in over-the-horizon communications using tropospheric scatter, but such systems are expensive and generally used only in specialist roles.
WDCO-CD, virtual channel 10, is a low-powered, Class A TBD owned-and-operated television station licensed to Woodstock, Virginia, United States and serving the Washington, D.C. metropolitan area. Owned by the Hunt Valley, Maryland-based Sinclair Broadcast Group, it is sister to Washington-licensed ABC affiliate WJLA-TV and local cable channel WJLA 24/7 News. WDCO-CD's transmitter is located in Ward Circle in Washington's northwest quadrant.
WFSU is the callsign for public radio stations operated by Florida State University in Tallahassee, Florida.
The British Telecom microwave network was a network of point-to-point microwave radio links in the United Kingdom, operated at first by the General Post Office, and subsequently by its successor BT plc. From the late 1950s to the 1980s it provided a large part of BT's trunk communications capacity, and carried telephone, television and radar signals and digital data, both civil and military. Its use of line-of-sight microwave transmission was particularly important during the Cold War for its resilience against nuclear attack. It was rendered obsolete, at least for normal civilian purposes, by the installation of a national optical fibre communication network with considerably higher reliability and vastly greater capacity.
WTPS is a classic hip hop formatted broadcast radio station licensed to Petersburg, Virginia, serving Metro Petersburg. WTPS is owned and operated by Urban One. The station's studios and offices are located just north of Richmond proper on Emerywood Parkway in Petersburg.
A passive repeater or passive radio link deflection, is a reflective or sometimes refractive panel or other object that assists in closing a radio or microwave link, in places where an obstacle in the signal path blocks any direct, line of sight communication.
A broadcast relay station, also known as a satellite station, relay transmitter, broadcast translator (U.S.), re-broadcaster (Canada), repeater or complementary station (Mexico), is a broadcast transmitter which repeats the signal of a radio or television station to an area not covered by the originating station. It expands the broadcast range of a television or radio station beyond the primary signal's original coverage or improves service in the original coverage area. The stations may be used to create a single-frequency network. They may also be used by an AM or FM radio station to establish a presence on the other band.
WRCW is a conservative talk formatted broadcast radio station licensed to Warrenton, Virginia, serving Warrenton and Fauquier County, Virginia. The station power is 3,000 watts daytime, and 125 watts at night. WRCW is a full-time relay of sister station WWRC in Bethesda, Maryland. WRCW is owned and operated by Salem Media Group.
WRIQ (89.7 MHz) is a National Public Radio formatted broadcast radio station licensed to Charles City, Virginia, serving the Richmond–Petersburg area. WRIQ is part of the Radio IQ network, simulcasting the NPR news and talk programming of flagship WVTF. WRIQ is owned by Virginia Polytechnic Institute and State University through its fundraising arm, the Virginia Tech Foundation.
KSQQ is a world ethnic radio station broadcasting in the Chinese and Portuguese languages. The station is owned by Coyote Communications and licensed to Morgan Hill, California, with a translator, K277BN, in San Martin, California. It serves the greater San Francisco Bay Area from North Santa Clara County to Marin County. Its studios are in San Jose, and it has a transmitter site just south of the city limits.
WRAF is a Christian radio station owned and operated by Radio Training Network, Inc. It is licensed to Toccoa Falls, Georgia and serves the Athens metropolitan area along with much of Northeast Georgia. It features a Christian adult contemporary music format. Three family ministries are also included in the weekday schedule: Dr. James Dobson, Dr. David Jeremiah and Dr. Charles Stanley .It features news from Salem Communications.
KLZX is a radio station broadcasting a classic rock format. Licensed to Weston, Idaho, United States, the station is currently owned by Sun Valley Radio Inc. The station is also broadcast on HD radio. According to Radio-Locator, the transmitter for KLZX is located in northern Utah. KLZX can be heard regularly in Salt Lake City, via its booster signal (KLZX-1) broadcasting near Tremonton, Utah. The booster also carries the station's HD Radio signals.
Amateur radio, also known as ham radio, is the use of the radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emergency communications. The term "amateur" is used to specify "a duly authorized person interested in radioelectric practice with a purely personal aim and without pecuniary interest"; and to differentiate it from commercial broadcasting, public safety, or professional two-way radio services.
OSCAR 3 is the third amateur radio satellite launched by Project OSCAR into Low Earth Orbit. OSCAR 3 was launched March 9, 1965 by a Thor-DM21 Agena D launcher from Vandenberg Air Force Base, Lompoc, California. The satellite, massing 15 kg (33 lb), was launched piggyback with seven United States Air Force satellites. Though the satellite's active life was limited to sixteen days due to battery failure, OSCAR 3 relayed 176 messages from 98 stations in North America and Europe during its 274 orbit life-time -- the first amateur satellite to relay signals from Earth. As of 2023, it is still in orbit.
WRXL-HD2 – branded Big 98.5 – is a digital subchannel of Richmond, Virginia radio station WRXL (102.1 FM). Owned by Audacy, Inc., WRXL-HD2 functions as a commercial country music radio station, serving Greater Richmond and much of surrounding Central Virginia. Using the proprietary technology HD Radio for its main digital transmission, WRXL-HD2 also rebroadcasts over low-power analog Glen Allen translator W253BI (98.5 FM), and streams online via Audacy. The WRXL-HD2 studios, and transmitters for both WRXL-HD2 and W253BI, reside in the Richmond suburb of Dumbarton.
