Amateur television (ATV) is the transmission of Broadcast quality video and audio over the wide range of frequencies of (radio waves) allocated for Radio amateur (Ham) use. ATV is used for non-commercial experimentation, pleasure and public service events. Ham TV stations were on the air in many cities before commercial television stations came on the air. Various transmission standards are used, these include the broadcast transmission standards of NTSC in North America and Japan, and PAL or SECAM elsewhere, utilising the full refresh rates of those standards. ATV includes the study of building of such transmitters and receivers, and the study of radio propagation of signals travelling between transmitting and receiving stations.
ATV is an extension of amateur radio. It is also called HAM TV or Fast Scan TV (FSTV) (as opposed to slow-scan television (SSTV), which can be transmitted on shortwave ham bands due to its narrowband structure, but is not decodable by a commercially available television receiver).
Other articles related to "amateur television, amateur, amateurs, television":
... by ATV has included From 1968 to about 2004 amateur TV provided behind-the-scenes co-ordination for the annual New Year's Day Tournament of Roses Parade in ... service events and, along with traditional amateur radio, provides much needed "eyes" in natural disasters ...
... Amateur radio Amateur radio direction finding Amateur radio emergency communications Amateur radio high bands Amateur radio homebrew Amateur radio operating award Amateur radio station ... Many amateurs begin with a fascination of radio communication and then combine other personal interests to make pursuit of the hobby rewarding ... Some of the focal areas amateurs pursue include radio contesting, radio propagation study, public service communication, technical experimentation, and computer networking ...
... Amateur television (ATV) is the hobby of transmitting broadcast- compatible video and audio by amateur radio ... the 70 cm band is particularly popular, because the signals can be received on any cable-ready television ... See also slow-scan television ...
Famous quotes containing the words television and/or amateur:
“All television ever did was shrink the demand for ordinary movies. The demand for extraordinary movies increased. If any one thing is wrong with the movie industry today, it is the unrelenting effort to astonish.”
—Clive James (b. 1939)
“I have been reporting club meetings for four years and I am tired of hearing reviews of the books I was brought up on. I am tired of amateur performances at occasions announced to be for purposes either of enjoyment or improvement. I am tired of suffering under the pretense of acquiring culture. I am tired of hearing the word culture used so wantonly. I am tired of essays that let no guilty author escape quotation.”
—Josephine Woodward, U.S. author. As quoted in Everyone Was Brave, ch. 3, by William L. ONeill (1969)