Search results
Results from the WOW.Com Content Network
In December 1975, RCA created Satcom 1, the first satellite built especially for use by the then three national television networks (CBS, NBC, and ABC).Later that same year, HBO leased a transponder on Satcom 1 and began transmission of television programs via satellite to cable systems.
The satellite television dishes of the systems in the late 1970s and early 1980s were 10 to 16 feet (3.0 to 4.9 m) in diameter, [69] made of fibreglass or solid aluminum or steel, [70] and in the United States cost more than $5,000, sometimes as much as $10,000. [71]
In the United States, television is available via broadcast (also known as "over-the-air" or OTA) – the earliest method of receiving television programming, which merely requires an antenna and an equipped internal or external tuner capable of picking up channels that transmit on the two principal broadcast bands, very high frequency (VHF) and ultra high frequency (UHF), to receive the ...
The satellite television dishes of the systems in the late 1970s and early 1980s were 10 to 16 feet (3.0 to 4.9 m) in diameter, [216] made of fibreglass or solid aluminum or steel, [217] and in the United States cost more than $5,000, sometimes as much as $10,000. [218]
Ion Television – Ion Television (originally known as Pax TV from 1998 to 2005, i: Independent Television from 2005 to 2007) is a mid-sized network owned by the Scripps Networks subsidiary of the E. W. Scripps Company; it airs off-network repeats of recent television series (usually a daily block of one series) for eighteen hours per day ...
SatelliteThe satellite carriers, in contrast, currently beam the same 450 to 500 channels throughout the continental United States and thus could not comply with the rule requiring them to retransmit the signals of each of the country's roughly 1,600 local broadcast stations.
High-definition television (HDTV) in the United States was introduced in 1998 and has since become increasingly popular and dominant in the television market. Hundreds of HD channels are available in millions of homes and businesses both terrestrially and via subscription services such as satellite, cable and IPTV.
The United States Navy would use broadcasting to relay messages between ships, airplanes, and shore stations throughout the war. The result of the Navy's demand for broadcasting was the mass production of radio equipment with simplified construction and operation requirements so they could be readily used by the common man.