The United States government had set up a program to offer consumers a $40 'coupon' which could be used toward the purchase of a coupon-eligible converter box that program ended in July 2009.Īt the Consumer Electronics Association's Entertainment Technology Policy Summit in January 2006, Federal Communications Commission (FCC) Commissioner Jonathan Adelstein said many Americans did not know about the February 17, 2006, deadline for ending analog TV. Additionally, viewers who have newer televisions with built-in digital ATSC tuners will not need an external digital television adapter. Viewers who receive their television signals through cable or satellite were not affected by this change and did not need a digital television adapter (however, see the cable TV exception below). Since many of the low-power TV stations continued to broadcast in analog for a while, consumers who watch low-power stations needed an adapter with an analog passthrough feature that allows the viewer to watch both digital and analog signals. Viewers who watch broadcast television on older analog TV sets must use a digital converter box. On June 12, 2009, all full-power analog television transmissions ended in the United States. Because the DTV transition did nothing to reduce the number of broadcast television system standards (and in fact further complicated them), and due to varying frequency allocations and bandplans, there are many other combinations specific to other countries.

In North America, these ATSC tuner boxes convert from ATSC to NTSC, while in most of Europe and other places such as Australia, they convert from Digital Video Broadcasting (DVB) to PAL. It normally does not refer to satellite TV, which has always required a set-top box either to operate the big satellite dish, or to be the integrated receiver/decoder (IRD) in the case of direct-broadcast satellites (DBS). The input digital signal may be over-the-air terrestrial television signals received by a television antenna, or signals from a digital cable system. Some also have an HDMI output since some TVs with HDMI do not have a digital tuner. A digital television adapter ( DTA), commonly known as a converter box or decoder box, is a television tuner that receives a digital television (DTV) transmission, and converts the digital signal into an analog signal that can be received and displayed on an analog television set.

Analog to digital converter adapter