Analog television

Analog television is broadcasting television programming using analog signals. Before digital television, all broadcasters used analog signals.
Analog television can be wireless or can be over a cable television network.
Many countries have changed from analog to digital television. Others are in the process of changing, and some have not started changing. 
The current deadline for "low power" TV stations in the United States to switch to digital television is July 13th 2021, over 60 years after analog was first made. The full power stations already switched in the months between February 12th and July 12th 2009. 
Switchover to digital TV.
In 2008, the FCC in the US said that all full power stations needed to switch to digital by the 13th February 2009. Most had already been running digital channels alongside the analog version. Satellite, cable, and users with low power did not need to make the change at the time. The FCC gave people up to 2 $40 coupons to buy converter boxes between January 2008 and March 2009. 
In the UK, regions began changing to digital terrestrial television in 2007. The regional phase ended in 2012. Northern Ireland was the last place to replace analog in the UK on the morning of 24th of October 2012. 
Some people were worried that because some digital channels didn't have subtitles, that some people would have difficulty understanding what was happening. The London Olympic Games were meant to be held soon, which also made people worried that the timetable would affect people's ability to watch it if they did not make the switch completely. 
Meanwhile in the US, 2 years after all of the full power analog TV stations were shut down, the FCC, on July 15, 2011 made the date for low power television. Stations on channels 52 to 69 had to shut down or leave those channels by December 31, 2011, and all analog television transmitters needed to shut down by September 1, 2015. The FCC said, on May 17 of 2017, that all analog low-power stations and transmitters must convert by July 13, 2021.