What is a Set-Top Box?

Last Update Date : Nov 09. 2018

A set Top Box (STB) is an electronic device, similar in size and shape to a VCR, that tunes into, receives and decodes HDTV signals.

HDTV signals can come from over-the-air broadcasts, digital satellite, or digital cable.

There are four kinds of STBs:

• HDTV tuners - tune in, receive, and decode free over-the-air HDTV and DTV signals with an antenna

• DirectTV receivers - tune in, receive, and decode digital satellite signals with a satellite dish

• All-in-one receivers - tune in, receive, and decode both over-the-air and digital satellite HDTV and DTV signals. All-in-one receivers require both a satellite dish and an antenna

• Cable HDTV receivers - tune, receive, and decode digital cable signals

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