What is analog TV and how is it different from digital TV?

Going analog is all the rage, but does it apply to the small screen?

The television industry continues to be in flux. As the streaming revolution continues to push viewers away from traditional cable broadcasts, consumers have more options than ever when looking to enjoy their favorite programming. In April 2026, for instance, Nielson found that streaming had risen to roughly 47.6% of US viewing habits, over double the combined total of broadcast and cable viewers. Gone are the days of analog television, when families would huddle around a massive console to enjoy a static-riddled broadcast of The Dick Van Dyke Show . And while over-the-air (OTA) broadcasts continue to be in roughly 20% of homes, the technology behind these broadcasts has progressed far beyond its predecessors.

For younger audiences, parsing the differences between television broadcast technologies can be difficult. Analog, for instance, seems something born of an imagined past. But the technology persisted beyond the era when television boxes were the size of small sedans, as America's broadcasting network hadn't fully transitioned from the technology until 2009. Incredibly, this means that some users likely watched an analog broadcast while texting on their iPhone.

The transition to digital, meanwhile, has brought a host of improvements, ranging from high definition television to more consistent feeds. As it stands, television broadcasts are undergoing a similar evolution with the introduction of NextGen Television, or ATSC 3.0, which adds internet protocols to digital television broadcasting. Promising 4k resolution, enhanced multicasts, better audio and expanded channels, the NextGen TV transition looks to mirror the analog-to-digital move nearly two decades earlier. However, accessibility concerns plague the transition, with many advocates worrying that a hasty transition could strip millions of free television services. To put these changes in context, let's take a look back at the rise and fall of television technology that started it all: analog.

Think of analog television as a return to the earliest days of visual broadcasting. Gaining popularity in the wake of World War II, analog television transmits video and audio signals via Very High Frequency and Ultra High Frequency channels. These signals were broadcast via local television stations, which your parents and grandparents' television sets would receive via antennas that tapped into analog broadcasts the same way your car does a radio station. When households transitioned to cable, the transition came using analog cables, allowing for analog to remain the predominant form of television broadcast for roughly 6 decades until the FCC mandated that all stations fully transitioned to digital television by 2009. Since then, analog television has gone by the wayside.

Analog video cameras convert light into electrical signals. Typically capturing these images at 30 frames per second in the US, the camera then converts these electric pulses into rows of pixels, which represent the colors and intensity of the visuals in the frame. These are then combined with horizontal and vertical synchronization signals to inform a television set where the transmitted rows should be displayed and when to start drawing a new frame. The signal that relays this arrangement, known as a composite video signal, is then broadcast over the airwaves on specific frequencies, which determine their corresponding channel. Sound was transmitted separately.

How these broadcasts make their way to your television mirrored the processes of traditional radio stations. Ultimately, each television station broadcast a paired visual and sound signal over ultra high and very high radio frequencies, with the AM channel carrying visual signals and the FM channel its sound. These combined frequencies make up the channel your analog television would tune into to watch.

At first, viewers could tap into television broadcasts via antennas that intercepted these broadcasted signals. Early cable, meanwhile, delivered these signals via coaxial cables directly to viewer's television sets. Analog cables transmit information via electric pulses whose amplitudes correspond to specific light or sound signatures.