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=== Over the Air ===
Over the air (OTA) reception requires an antenna or satellite dish and a tuner in the TV or a separate component. A separate component will give the most flexibility. Historically for analogue broadcasts each country used one of three different broadcast standards: [https://en.wikipedia.org/wiki/NTSC NTSC] in North, Central and Andean South America; [https://en.wikipedia.org/wiki/SECAM SECAM] in France, the former USSR and Central West Africa; and [https://en.wikipedia.org/wiki/PAL PAL] in Europe and most of the rest of the world.
However, the world is moving to adopting Digital television (DTV) and proliferating an even larger number of standards.<ref>https://en.wikipedia.org/wiki/Digital_television</ref> Most DTV OTA direct transmissions are low power and only useful at maximum distances of ~30 miles. The world is moving to streaming video via Internet and less and less by cable. Boats typically use [[MarineSatellite|marine satellite]] to subscribe to cable packages.
The DTV OTA standard in North America is [https://en.wikipedia.org/wiki/ATSC_standards ATSC].
=== USB ===
A universal serial bus ([https://en.wikipedia.org/wiki/USB USB]) connector standardizes the connection of keyboards, pointing devices, digital cameras, printers, portable media players, disk drives and network adapter) to personal computers and HDTV, both to communicate and to supply electric power.
An example use is to display digital photos on the TV, or to provide power to a streaming media device such as an [http://www.apple.com/tv/ Apple TV], [https://www.google.com/intl/en_ca/chromecast/ Google Chromecast] or [https://www.roku.com/ Roku] stick.
== Energy Consumption ==