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Amateur television

"Fast-scan" redirects here. For the ultrasound assessment used in trauma, see Focused assessment with sonography for trauma.

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.[1] 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.[2] Various transmission standards are used, these include the broadcast transmission standards of NTSC in North America and Japan, and PAL or SECAM elsewhere, utilizing 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.[3]

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).

Signal circuit performance checks made when using a typical test card.
  1. ^ "United Kingdom Frequency allocation table" (PDF). Publication date 2008 (Issue No. 15). Ofcom. Archived from the original (PDF) on 17 January 2011. Retrieved 26 November 2010.
  2. ^ Kowalewski, Anthony, "An Amateur's Television Transmitter" Archived 2011-09-24 at the Wayback Machine, Radio News, April 1938. Early Television Museum and Foundation Website. Retrieved 19 July 2009.
  3. ^ "HF - Propagation Predictions from the United Kingdom". Publication date November 2010. Radio Society of Great Britain. Archived from the original on 24 October 2010. Retrieved 26 November 2010.

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