In telecommunication, the term off-air or off-the-air has the following meanings:

  1. In radio communications systems, pertaining to a radio station or television station that is completely shut down, i.e. that is not transmitting any signal, not even an un-modulated carrier wave. Other terms in this context include "dark" or "silent", though those terms were typically used for a station that has left the air for an extended period of time, or permanently; while "off-the-air" is generally used for a brief period of time, or for a station that has recently stopped broadcasting.
  2. In a radio station, pertaining to a particular source of modulation, such as a specific microphone, that is disconnected, i.e. is no longer capable of modulating the carrier.

Note: The carrier wave may continue unmodulated or it may be modulated by another signal source, such as a subcarrier.

Also, off-the-air may be synonymous with over-the-air or from-the-air, as in picking up a terrestrial broadcast TV station off-the-air instead of from cable TV. As this usage may be confusing due to the term's other meanings, the terms "over the air" or "on the air" are more standard in the broadcasting industry.

See also


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • off the air — {adj. phr.} Not broadcasting; observing radio silence. * /The talk show is off the air on Wednesdays and Fridays./ …   Dictionary of American idioms

  • off the air — {adj. phr.} Not broadcasting; observing radio silence. * /The talk show is off the air on Wednesdays and Fridays./ …   Dictionary of American idioms

  • M.T.V. − Get off the Air — is Track 8 of the 1985 Dead Kennedys album Frankenchrist. In his lyrics, Jello Biafra admonishes M.T.V. for what he feels is its attempt at forced conformity under the guise of being cutting edge. The song begins with a pep rally style cheer… …   Wikipedia

  • Off the Lock — Studio album by B z Released May 21, 1989 Genre …   Wikipedia

  • Off The Square Hotel Christchurch (Christchurch) — Off The Square Hotel Christchurch country: New Zealand, city: Christchurch (City) Off The Square Hotel Christchurch Off The Square is a stylish boutique hotel, situated in one of the best locations in Christchurch, part of the new Cathedral… …   International hotels

  • The Air That I Breathe (All That Remains song) — The Air That I Breathe is the second single off of All That Remains 2006 album The Fall of Ideals. It was also one of three songs off the album to be made into a music video, along with This Calling and Not Alone. Music VideoThe video features… …   Wikipedia

  • The Air I Breathe — Infobox Film name = The Air I Breathe image size = caption = Theatrical poster director = Jieho Lee producer = Darlene Caamaño Emilio Diez Barroso Paul Schiff writer = Jieho Lee Bob DeRosa narrator = starring = Sarah Michelle Gellar Kevin Bacon… …   Wikipedia

  • The War in the Air — Infobox Book | name = The War in the Air title orig = translator = image caption = 2002 edition author = H. G. Wells illustrator = cover artist = country = United Kingdom language = English series = genre = Science fiction novel publisher =… …   Wikipedia

  • Off the Hook² — Infobox Album Name = Off The Hook² Type = Album Artist = Various Artists Background = darkseagreen Released = 2003 Recorded = Various Times Genre = Pop Length = ? Label = Universal Music Reviews = Last album = Off The Hook This album = Off The… …   Wikipedia

  • off the books — Book Book (b[oo^]k), n. [OE. book, bok, AS. b[=o]c; akin to Goth. b[=o]ka a letter, in pl. book, writing, Icel. b[=o]k, Sw. bok, Dan. bog, OS. b[=o]k, D. boek, OHG. puoh, G. buch; and fr. AS. b[=o]c, b[=e]ce, beech; because the ancient Saxons and …   The Collaborative International Dictionary of English

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”