Digital Terrestrial Television

Definition of Digital Terrestrial Television

Digital Terrestrial Television (DTT) is a broadcasting technology that uses digital signals to deliver television content over the airwaves. It enables multiple channels to be transmitted in the same frequency range, offering higher picture and sound quality compared to traditional analog broadcasts. DTT makes efficient use of the radio frequency spectrum, allowing for more channels and interactive services in a given area.


The phonetic pronunciation of the keyword “Digital Terrestrial Television” is: Dɪˈdʒɪtəl təˈrestrɪəl ˈtɛlɪˌvɪʒən

Key Takeaways

  1. Digital Terrestrial Television (DTT) offers higher quality video and audio compared to analog broadcasting, leading to better overall user experiences.
  2. DTT can transmit multiple channels within the same frequency bandwidth, enabling more diverse content and efficient use of available spectrum.
  3. DTT is more environmentally friendly as it consumes less energy for transmission and reduces reliance on large broadcasting antennas.

Importance of Digital Terrestrial Television

Digital Terrestrial Television (DTT) is an essential technological term because it refers to the broadcasting of television services using digital signals instead of analog signals, which were traditionally used in the past.

DTT delivers several benefits over its analog counterpart, such as higher picture and sound quality, better reception, and efficient use of available broadcast spectrum, allowing the transmission of more channels without occupying additional frequency.

Furthermore, this innovative technology contributes to the digital switchover in many countries, aiding in the freeing up of valuable radio frequency resources for other services, such as telecommunications and emergency services.

As a result, DTT plays a crucial role in enhancing the overall viewers’ experience while promoting sustainable and efficient use of the radio spectrum.


Digital Terrestrial Television (DTT) serves a fundamental purpose in today’s modern telecommunication landscape by providing an efficient means of transmitting digital television signals over land-based networks to a wide audience. Implementing DTT has revolutionized the way we consume television broadcasts, as it enables a significantly greater number of channels and exceptional picture quality compared to traditional analog systems. Furthermore, DTT has made it simpler for users to access a multitude of free-to-air channels without any subscription fees, thereby democratizing access to high-quality television content.

DTT also ensures a more efficient use of the available radio spectrum, enabling the provision of advanced television services such as High Definition (HD) and even Ultra High Definition (UHD) broadcasts. DTT also plays a crucial role in achieving environmental sustainability by reducing energy consumption related to broadcasting. The migration from analog to digital systems allows for the transmission of multiple channels using the same bandwidth as a single analog channel, consequently fostering optimal use of the radio spectrum.

This digital switchover has eliminated the need for power-hungry analog transmitters, significantly reducing the environmental impact of terrestrial broadcasting. Additionally, DTT has opened up possibilities for the expansion of other services, such as mobile and wireless communications, as a result of the freed-up spectrum. Overall, Digital Terrestrial Television enables a multitude of advancements like enhanced television experiences, reduced environmental impact, and spectrum optimization, making it an essential element in today’s digital world.

Examples of Digital Terrestrial Television

United States: ATSC (Advanced Television Systems Committee) In the United States, Digital Terrestrial Television technology is implemented through ATSC standards. This transition from analog to digital broadcasting started inATSC has continued to evolve, and currently, ATSC

0 (NextGen TV) is being launched across the country. With ATSC0, viewers can enjoy higher quality video, improved audio, better signal reception, and interactive features, such as accessing additional information about the programs they are watching.

United Kingdom: FreeviewFreeview is the UK’s free-to-air digital terrestrial television service, launched inIt replaced the previous analog system and provided more channels without any subscription fees. Freeview uses the DVB-T broadcast standard and is available to almost all households in the United Kingdom. The service offers over 70 standard TV channels, 15 high-definition channels, and various radio stations, enabling people to access a wide range of content using digital terrestrial television technologies.

Brazil: ISDB-T (Integrated Services Digital Broadcasting Terrestrial)Brazil employs the Japanese-Brazilian ISDB-T standard for its Digital Terrestrial Television system, which began operating inIn addition to providing high-quality digital video and audio, it offers additional features such as EPG (Electronic Program Guide) and support for mobile devices like smartphones and tablets. This technology allowed Brazil to significantly improve the quality of television broadcasts and effectively utilize the country’s frequency spectrum for better resource management.


Digital Terrestrial Television FAQ

What is Digital Terrestrial Television?

Digital Terrestrial Television (DTT) is a method of broadcasting television signals in digital format over the air, using terrestrial transmitters. This technology allows multiple channels to be transmitted in the same bandwidth as one analog channel, providing better picture and sound quality, as well as additional services and features.

What are the benefits of Digital Terrestrial Television?

DTT offers several advantages over traditional analog broadcasting, including improved picture and sound quality, more channels, better coverage, and additional features like digital subtitles, electronic program guides, and interactivity. DTT is also more efficient in terms of bandwidth usage, allowing more channels to be transmitted within the same frequency spectrum.

How do I receive Digital Terrestrial Television?

To receive DTT, you will need a TV set with a built-in digital tuner or a separate digital receiver, connected to an appropriate terrestrial antenna. The antenna should be aligned and pointed towards the local transmitter in your area. Once connected, you can use your TV or receiver’s menu system to perform a channel search or scan, which will identify and store available digital channels.

Do I need a special antenna for Digital Terrestrial Television?

In most cases, the same antenna used for analog TV reception can also pick up DTT signals. However, depending on your location and the condition of your current antenna system, you may need to upgrade it or use a more suitable type of antenna to receive digital broadcasts successfully.

Can I still watch analog terrestrial television?

As DTT becomes more prevalent, many countries have begun switching off analog broadcasts in a process known as digital switchover. This means that in some areas, analog television may no longer be available, and you will need to transition to DTT or another digital service (such as satellite or cable) to continue watching television.


Related Technology Terms

  • Multiplexing
  • Set-top box
  • Digital Video Broadcasting (DVB)
  • 4.

  • High Definition Television (HDTV)
  • 5.

  • Electronic Program Guide (EPG)

Sources for More Information


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