Radio network

There are two types of radio networks currently in use around the world: the one-to-many broadcast network commonly used for public information and mass media entertainment; and the two-way radio 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.

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 the range of coverage required by the jurisdiction or authority implementing the system: conventional wireless links in numerous frequency bands, fibre-optic links, or micro-wave 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.

Radio

Radio is the use of radio waves is to carry information, such as sound, by systematically modulating some property of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width. When radio waves strike an electrical conductor, the oscillating fields induce an alternating current in the conductor. The information in the waves can be extracted and transformed back into its original form.

Radio systems need a transmitter to modulate (change) some property of the energy produced to impress a signal on it, for example using amplitude modulation or angle modulation (which can be frequency modulation or phase modulation). Radio systems also need an antenna to convert electric currents into radio waves, and vice versa. An antenna can be used for both transmitting and receiving. The electrical resonance of tuned circuits in radios allow individual stations to be selected. The electromagnetic wave is intercepted by a tuned receiving antenna. A radio receiver receives its input from an antenna and converts it into a form usable for the consumer, such as sound, pictures, digital data, measurement values, navigational positions, etc. Radio frequencies occupy the range from a 3 kHz to 300 GHz, although commercially important uses of radio use only a small part of this spectrum.

Progressive house

Progressive house is a style (subgenre) of house music. The progressive house style emerged in the early 1990s. It initially developed in the United Kingdom as a natural progression of American and European house music of the late 1980s.

Etymology

In the context of popular music the word "progressive" was first used widely in the 1970s to differentiate experimental forms of rock music from mainstream styles. Such music attempted to explore alternate approaches to rock music production. Some acts also attempted to elevate the aesthetic values of rock music by incorporating features associated with classical instrumental music. This led to a style of music called progressive rock, which has been described as "the most self-consciously arty branch of rock."

In disco music, and later house music, a similar desire to separate more exploratory styles from standard approaches saw DJs and producers adopting the word "progressive" to make a distinction. According to the DJ and producer Carl Craig, the term "progressive" was used in Detroit in the early '80s in reference to Italo disco. The music was dubbed "progressive" because it drew upon the influence of Giorgio Moroder's Euro disco rather than the disco inspired by the symphonic sound of Philadelphia soul. In Detroit, prior to the emergence of techno, artists like Alexander Robotnick, Klein + M.B.O. and Capricorn filled a vacancy left after disco's demise in America. In the late 1980s, UK music journalist Simon Reynolds introduced the term "progressive dance" to describe album oriented acts such as 808 State, The Orb, Bomb the Bass and The Shamen. Between 1990 to 1992, the term "progressive" referred to the short-form buzz word for the house music subgenre "progressive house".

Network

Networking and networking may refer to:

Biological, biosocial, electric, and electronic

Art, entertainment, and media

In organizations

Orson Welles

George Orson Welles (/ˈwɛlz/; May 6, 1915 – October 10, 1985) was an American actor, director, writer, and producer who worked in theatre, radio, and film. He is remembered for his innovative work in all three: in theatre, most notably Caesar (1937), a Broadway adaptation of William Shakespeare's Julius Caesar; in radio, the 1938 broadcast "The War of the Worlds", one of the most famous in the history of radio; and in film, Citizen Kane (1941), consistently ranked as one of the all-time greatest films.

Welles directed a number of high-profile stage productions for the Federal Theatre Project in his early twenties, including an innovative adaptation of Macbeth with an entirely African American cast, and the political musical The Cradle Will Rock. In 1937 he and John Houseman founded the Mercury Theatre, an independent repertory theatre company that presented an acclaimed series of productions on Broadway through 1941. Welles found national and international fame as the director and narrator of a 1938 radio adaptation of H. G. Wells' novel The War of the Worlds performed for his radio anthology series The Mercury Theatre on the Air. It reportedly caused widespread panic when listeners thought that an invasion by extraterrestrial beings was occurring. Although some contemporary sources claim these reports of panic were mostly false and overstated, they rocketed Welles to notoriety.