There are two types of radio network currently in use around the world: the one-to-many ( simplex communication ) broadcast network commonly used for public information and mass-media entertainment, and the two-way radio ( duplex communication ) type used more commonly for public safety and public services such as police , fire, taxicabs , and delivery services. Cell phones are able to send and receive simultaneously by using two different frequencies at the same time. Many of the same components and much of the same basic technology applies to all three.
18-606: The Cavaliers AudioVerse is an American radio network composed of 20 radio stations which carry English-language coverage of the Cleveland Cavaliers , a professional basketball team in the National Basketball Association (NBA). Cleveland sister stations WTAM ( 1100 AM ) and WMMS ( 100.7 FM ) serve as the network's two flagships ; WTAM also relays its signal over a low-power FM translator . The network also includes eighteen affiliates in
36-434: A concept called trunking is commonly used to achieve better efficiency of radio spectrum use and provide very wide-ranging coverage with no switching of channels required by the mobile radio user as it roams throughout the system coverage. Trunking of two-way radio is identical to the concept used for cellular phone systems where each fixed and mobile radio is specifically identified to the system controller and its operation
54-493: A five-year contract extension with the Cavaliers through the 2013–14 season; in 2011, a Cavs spokesman stated there were "multiple years" remaining on the team's contract with WTAM, without specifying an end date. In 2014, WTAM owner iHeartMedia (formerly Clear Channel) announced a new "multi-year" contract with the team; this new arrangement also established simulcasts on WTAM sister station WMMS. Additional affiliates were added in
72-689: A major mass media entertainment and information medium earning many millions of dollars in revenues annually through radio advertising commercials or sponsorship . These latter uses were brought about after 1920 by business entrepreneurs such as David Sarnoff , who created the National Broadcasting Company (NBC), and William S. Paley , who built Columbia Broadcasting System (CBS). These broadcasting (as opposed to narrowcasting ) business organizations began to be called network affiliates , because they consisted of loose chains of individual stations located in various cities, all transmitting
90-510: A radio receiver set. The new medium had grown rapidly through the 1930s, vastly increasing both the size of its audience and its profits. In those early days, it was customary for a corporation to sponsor an entire half-hour radio program, placing its commercials at the beginning and the end. This is in contrast to the pattern which developed late in the 20th century in both television and radio, where small slices of time were sold to many sponsors and no corporation claimed or wanted sponsorship of
108-590: A variety of networks. Radio networks rose rapidly with the growth of regular broadcasting of radio to home listeners in the 1920s. This growth took various paths in different places. In Britain the BBC was developed with public funding , in the form of a broadcast receiver license , and a broadcasting monopoly in its early decades. In contrast, in the United States various competing commercial broadcasting networks arose funded by advertising revenue. In that instance,
126-540: Is switched by the controller. The broadcast type of radio network is a network system which distributes programming to multiple stations simultaneously, or slightly delayed, for the purpose of extending total coverage beyond the limits of a single broadcast signal. The resulting expanded audience for radio programming or information essentially applies the benefits of mass-production to the broadcasting enterprise. A radio network has two sales departments, one to package and sell programs to radio stations, and one to sell
144-531: Is the process of organising a schedule of radio content for commercial broadcasting and public broadcasting by radio stations . The original inventors of radio , from Guglielmo Marconi 's time on, expected it to be used for one-on-one wireless communication tasks where telephones and telegraphs could not be used because of the problems involved in stringing copper wires from one point to another, such as in ship-to-shore communications. Those inventors had no expectations whatever that radio would become
162-540: The Grand Ole Opry , has been focused on broadcasting country music since it began in 1925. Radio soap operas began in the U.S. in 1930 with Painted Dreams . Lørdagsbarnetimen , a Norwegian children's show, with its premiere in 1924 interrupted only by the Second World War, was the longest running radio show in the world until it ceased production in 2010. In the early 1950s, television programming eroded
180-684: The Columbus, Dayton and Cincinnati markets, coinciding with LeBron James ' heavily publicized return to the team. John Michael took over as the team's lead play-by-play announcer starting in the 2011–12 season following the retirement of longtime radio voice Joe Tait . After the death of lead TV play-by-play announcer Fred McLeod prior to the start of the 2019–20 season, Michael was reassigned to that position, with Tim Alcorn—lead sports announcer and station manager at Cavaliers radio affiliate WEOL in Elyria —being hired as Michael's successor. The radio network
198-542: The U.S. states of Ohio , Pennsylvania and West Virginia : thirteen AM stations, ten of which supplement their signals with low-power FM translators; and five full-power FM stations. Tim Alcorn is the current play-by-play announcer , while Jim Chones serves as color analyst . In addition to traditional over-the-air AM and FM broadcasts, network programming airs on SiriusXM satellite radio; and streams online via SiriusXM Internet Radio , TuneIn Premium , and NBA League Pass Audio . In 2008, longtime flagship WTAM signed
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#1732885099778216-508: The audience of those programs to advertisers. Most radio networks also produce much of their programming. Originally, radio networks owned some or all of the stations that broadcast the network's radio format programming. Presently however, there are many networks that do not own any stations and only produce and/or distribute programming. Similarly station ownership does not always indicate network affiliation. A company might own stations in several different markets and purchase programming from
234-415: The entire show, except in rare cases. These later commercials also filled a much larger portion of the total program time than they had in the earlier days. In the early radio age, content typically included a balance of comedy , drama , news, music and sports reporting. Variety radio programs included the most famous Hollywood talent of the day. During the 1920s, radio focused on musical entertainment,
252-434: The range of coverage required by the jurisdiction or authority implementing the system: conventional wireless links in numerous frequency bands, fibre-optic links, or microwave links. In all of these cases the signals are typically backhauled to a central switch of some type where the radio message is processed and resent (repeated) to all transmitter sites where it is required to be heard. In contemporary two-way radio systems
270-537: The same corporation that owned or operated the network often manufactured and marketed the listener's radio. Major technical challenges to be overcome when distributing programs over long distances are maintaining signal quality and managing the number of switching/relay points in the signal chain . Early on, programs were sent to remote stations (either owned or affiliated) by various methods, including leased telephone lines, pre-recorded gramophone records and audio tape. The world's first all-radio, non-wireline network
288-426: The standard overall-system supplied fare, often at synchronized agreed-upon times. Some of these radio network stations were owned and operated by the networks, while others were independent radio owned by entrepreneurs allied with the respective networks. By selling blocks of time to advertisers, the medium was able to quickly become profitable and offer its products to listeners for free, provided they invested in
306-550: Was claimed to be the Rural Radio Network , a group of six upstate New York FM stations that began operation in June 1948. Terrestrial microwave relay, a technology later introduced to link stations, has been largely supplanted by coaxial cable , fiber , and satellite , which usually offer superior cost-benefit ratios. Many early radio networks evolved into Television networks . Radio programming Radio programming
324-668: Was rebranded as the "Cavaliers AudioVerse" beginning with the 2022–23 season. Radio network The two-way type of radio network shares many of the same technologies and components as the broadcast-type radio network but is generally set up with fixed broadcast points ( transmitters ) with co-located receivers and mobile receivers/transmitters or transceivers . In this way both the fixed and mobile radio units can communicate with each other over broad geographic regions ranging in size from small single cities to entire states/provinces or countries. There are many ways in which multiple fixed transmit/receive sites can be interconnected to achieve
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