Mondo Knows Facts
American analogue television ended in 2009
Full-power stations switched off their old transmitters on 12 June The United States had planned to end full-power analogue broadcasting in February 2009, but the date moved to 12 June so households could use up subsidy coupons for converter boxes. Low-power stations followed later. Other countries ran their own switchovers over the next few years. It sits in Mondo's movies & tv collection, one of 200 facts that each trace back to the reference below.
Where this comes from
Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.
Go further
More facts like this
European broadcasters agreed a loudness target in 2011EBU R128 recommended minus 23 LUFS so adverts stopped jumping out louderClosed captions rode in an invisible lineAmerican captions were coded into line 21 of the vertical blanking intervalTelecine machines copied film onto tapeA flying spot scanner read each frame and turned it into a video signal16:9 was a compromise between film shapesEngineers picked a ratio roughly between old television and widescreen cinemaCinema screen brightness is measured in foot-lambertsA meter aimed at a white screen reports how much light reaches the audienceSound pushed film to 24 frames per secondStudios adopted the rate in the late 1920s because optical sound needed it
๐ฌ Movies & TVfact 149 of 200
โ โ to keep reading, or swipe
Tags: broadcast, standards, 2009
American analogue television ended in 2009: the short answers
- Where does this come from, and can I check it?
- Full-power stations switched off their old transmitters on 12 June. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
- Is this really a movies & tv fact?
- Yes. It sits on the Movies & TV shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
- What else can I read about it?
- The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.