Digital television

  1. 1
    Why is DTT migration occurring?

    Decision (EU) 2017/899 of the European Parliament and of the Council, of 17 May, concerning the use of the 470-790 MHz frequency band within the Union, states that “with effect from 30 June 2020, Member States shall allow the use of the 694-790 MHz (“700 MHz”) frequency band for terrestrial systems capable of providing broadband wireless electronic communications services.

    This implies that, in Portugal, as well as in other European countries, this band will be released from its current use for digital terrestrial television (DTT).

    Once the 700 MHz band has been released, it will be made available for the provision of terrestrial wireless broadband electronic communications services, namely 5th generation (5G) mobile technology, which will enable the development of the country, its economy and an improvement in the quality of life of citizens.

  2. 2
    What does DTT migration consist of?

    The migration of the digital terrestrial television (DTT) network, which broadcasts RTP1, RTP2, RTP3, RTP Memória, SIC, TVI and Canal Parlamento, involves changing the frequencies of the broadcasters using the 694-790 MHz frequency band (the “700 MHz band”) to new broadcasting frequencies.

    This change is due to the fact that the “700 MHz band” has to be freed up by 30 June 2020 to be made available for the provision of terrestrial wireless broadband electronic communications services.

  3. 3
    How will the DTT migration process proceed?

    The changes of frequency of the digital terrestrial television (DTT) network broadcasters will be phased in. It will begin on 7 February 2020 with the resynchronisation of the Sines transmitter. It will continue in the south of the country, then move north and end in the autonomous regions of Azores and the Madeira. These network changes, suspended on March 13 due to the constraints associated to COVID-19, have been resumed on August 12 with a new migration schedule for DTT broadcasters

    Stages of channel change in the rest of the country

    Map of the new DTT network frequencies and migration phasing.

    The channels in these zones are already in operation and therefore need not be changed.

    Region 1

      Download de ficheiro Beginning of the migration process on 7 February 2020 

    Region 2

      Download de ficheiro Beginning of the migration process on 24 February 2020 

    Region 3

      Download de ficheiro Resumption of the migration process on 24 August 2020

    Region 4

      Download de ficheiro Beginning of the migration process on 12 August 2020

    Region 5

      Beginning of the migration process on a date to be defined

    Region 6

      Beginning of the migration process on a date to be defined

    Region A

      Beginning of the migration process on a date to be defined

     Region M

      Beginning of the migration process on a date to be defined


  4. 4
    How will citizens be affected by the DTT migration?

    This process will not have any impact on digital terrestrial television (DTT) users, in particular those who already have equipment tuned to channels 40, 42, 45, 46, 47 and 48, corresponding to frequencies below 700 MHz, given that these will not be subject to any change.

    Users who will be impacted by this frequency change process are those who have the equipment tuned to one of the around 240 broadcasters using radio channels 49, 54, 55 or 56, corresponding to frequencies above 700 MHz, who will have to re-tune their TV or TDT box using the respective controls.

    It should be noted that it will not be necessary to purchase new reception antennas, nor to change TV or DTT box. There will also be no need to realign receiving antennas (the transmitters will remain in the same place).

    No one will have to subscribe to pay-TV services (TV packages) either, as everyone will be able to continue to watch free TV, as per current practice.

    We underline that the only thing required where TV reception is lost, and a black screen appears, is to tune the TV or DTT box to the new channel.

    We also warn DTT users to remain vigilant and to report any attempts by third parties to induce them into purchasing equipment or subscribing to pay-TV services using the fraudulent argument that this is necessary in view of the forthcoming change of DTT frequencies.

  5. 5
    Who has to retune their TV/box?

    TV/box re-tuning must be performed by all users currently receiving digital terrestrial television (DTT) through broadcasters using radio channels 49, 54, 55 or 56, corresponding to frequencies above 700 MHz.

    This migration will not affect:

    • those who have a pay-TV service (via IPTV, cable, fibre or satellite);
    • users within an area covered by supplementary satellite DTT (DTS);
    • users who are already tuned to broadcasters using channels 40, 42, 45, 46, 47 and 48.
  6. 6
    When do I have to retune my TV/box?

    The digital terrestrial television (DTT) TV/box must be re-tuned when a blank screen appears on the television.

    Learn how to tune in here

  7. 7
    What do I have to do to tune in to the new DTT channels?

    To tune in to the new digital terrestrial television (DTT) channels when you lose the picture on your TV, simply tune back in (automatically or manually) using your equipment (box/TV) controls to continue receiving DTT broadcasts.

    Vê televisão gratuita? Conhece quem veja? Saiba como sintonizar as novas frequências da TDT através deste vídeo.

  8. 8
    Is it necessary to buy new equipment?

    No. You do not need to change your television or add or change external decoders (boxes) to continue receiving full digital terrestrial television (DTT) programming.

    However, buildings or condominiums that use mono-channel amplifiers in their signal amplification and distribution systems may need to replace them.

  9. 9
    Do you live in a building with a collective antenna? What do I need to do to continue receiving the DTT signal?

    The digital terrestrial television (DTT) migration process may require the adaptation of collective receiving infrastructure in buildings. This adaptation will not be the same for everyone, depending on the type of infrastructure used in the buildings.

    So if your building's receiving installation has:

    • a broadband amplifier: no need to make changes to the receiving system. You only have to re-tune the box/TV;
    • configurable control centre: you will need to re-programme the unit to the new frequency of the transmitter you are receiving if it currently uses a frequency in the 700 MHz band;
    • mono-channel amplifier - you will need to replace/add a mono-channel amplifier if the current one is tuned to a frequency in the 700 MHz band.

    Download de ficheiro Saiba mais sobre a tipificação das instalações de receção TDT (Learn more about the types of DTT receiving facilities).

  10. 10
    Who is responsible for changing frequencies in DTT broadcasters?

    The entity in charge of the change of frequencies in digital terrestrial television (DTT) broadcasters is MEO - Serviços de Comunicações e Multimédia, since this was the entity that installed and operates the DTT network, also being, as such, the entity in charge of the changes that will be made.

  11. 11
    Who can help with TV/box tuning?

    Any questions you may have about the tuning of channels for digital terrestrial television (DTT) reception may be answered by consulting the digital television area (Alterações da rede TDT or by calling the DTT 800 102 002 toll-free helpline, available every day from 9am to 10pm.

  12. 12
    What happens if you do not retune after migration?

    If you are in an area served by the frequency-changing broadcasters, and if you do not retune, you will no longer receive the digital terrestrial television (DTT) signal.

  13. 13
    How will I be informed of the changes that will be made?

    ANACOM will send a letter and a leaflet containing all the information about the frequency migration process to all residences, on the mainland and on the islands. This information will be sent in batches, according to the different migration phases. An awareness campaign is also under way, which includes broadcasting a radio advertisement on Rádio Renascença and Antena 1 and several local radios and a television advertisement on RTP1, RTP Açores, RTP Madeira and RTP Internacional; SIC and SIC International; TVI and TVI International, throughout the different migration phases.

    Other explanatory and informative materials, such as posters and videos, will be available regarding the steps to be followed in order to retune equipment. Briefing sessions will be held in liaison with parish councils, intermunicipal communities and other relevant entities. Through these measures, ANACOM and the other entities involved in this process will inform the public about when they will have to carry out the new tuning and what steps to take.

    There is also a customer helpline on the toll-free number 800 102 002, available every day from 9am to 10pm.