How Does Analog TV Work?

Rohan Mathew

Updated on:

About 120 million Americans owned a TV in 2019, according to a Nielson survey.

You may be thinking; what kind of TV did they own?

Many people living in the 21st Century own a Smart TV or something similar. But, some people still buy or have analog televisions.

Keep reading to find out the benefits of analog TV and ‘How Does Analog TV work?’

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How Does Analog TV Work?

A video camera takes a picture of a scene at 30 frame rates per second. Then the camera converts it into pixels. Each pixel has a specific color and intensity.

The pixel rows are combined with synchronization signals. These synchronization signals called horizontal and vertical synch. They exist so the electronics inside the television set know how to display the rows.

The final signal containing all of this is called a composite signal. “A… composite periodic analog signal is composed of multiple sine waves,” according to Data Communications and Networking.

But, the sound is completely separate.

Analog Antenna

During bad weather, having an analog antenna may be helpful. Antenna TV picks up over-the-air television signals. Analog antenna intercepts the TV signal. The signal travels as low energy electromagnetic waves, according to The Weather Guys.

The metal antenna service causes electrons to move and generates an electric current. The electrical current is then converted into the picture shown on the TV. If the TV carrier’s wave gets interrupted, the TV’s picture may cut out.

Television Channels

Composite video signals are broadcast over a specific frequency. Many Americans know these frequencies as VHF channels, running 2 to 13. There are also UHF channels running from 14 to 83.

On these channels, video and sound transmitted. Video is transmitted as an AM signal and sound is transmitted as an FM signal.

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Pros and Cons of Analog TV

There are many pros and cons to having an analog tv set instead of a digital.


  • flexible bandwidth
  • Not overly expensive
  • Generally long lifespan


  • No security for transmission data
  • May break in certain weather conditions
  • May not work at your location

An analog antenna can also offer you better picture quality. Cable television gives you the option of standard definition for free or buying cable. This is According to U.S. News.

Analog antenna will give you ‘uncompressed HD.’ Uncompressed HD television will give you a better picture quality while watching television.


Many Americans have television antennas in their homes. It may not be the only option, but TV antennas have major benefits. Benefits include accessing channels in bad weather. Installing TV antennas are not as expensive as buying cable.

A major benefit to analog TV is that it has uncompressed HD television available. And analog antenna’s usually offer good picture quality.

There are downsides to having an analog TV antenna, too. Some cons include no data transmission security and weather damage. Depending on your location, you may not be able to get an analog antenna installed at all.

Contact an antenna service for installation. Companies may offer are different types of installation. Many companies also offer repairs as well and regular maintenance.

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