Anacom: there are still nine locations with lack of quality in DTT – Exam Information

There are 14, 24 minutes. They correspond to one percent of the time it takes to spend a day. They are also the maximum time that a digital TV transmission Terrestrial (DTT) can add up in a district with interference or faults. Over 14.24 minutes of lack of quality, the district issued exceeds the minimum quality index required by law and shall be marked with a “red ball”. Starting today, any user can now find on the site of the National Communications Authority (Anacom) the quality issue where you live. At the time of opening, the map made known nine geographical points with emissions that are flawed in more than one percent of a day’s time.

Four of the “red balls” are located in the Grand Harbour or in respective surroundings; three are located in the northeast of the country; and two in the West. In almost all other points monitored by 314 sensors scattered throughout the mainland, dominate the green circles, illustrating cases where emissions suffer failures / interference which is lower than the 14.24 minutes a day.

As the traffic lights, the DTT signal monitoring tool also has a yellow color, which aims to illustrate situations where there were difficulties in receiving channel 56, but does not invalidate the existence of other alternative channels in the region that are also used for DTT emissions.

the map now available to the public reveals the state of emissions monitored until the day of Eve. For now, the only tool analyzes the transmissions made on channel 56.

The regulator admits expand in the future, measurements for other channels used by DTT. DTT was launched in Portugal with emissions over a single channel (or SFN Single Frequency Network). Later, following a number of complaints by people from various parts of the country, Anacom decided to require PT migration of transfers to other channels, reaching a network of different frequencies, which are confined to certain regions (Multiple Frequency Network or MFN).

Anacom admits that the map may not reflect all situations where emissions DTT reach consumers’ homes with lack of quality. E shows three most common situations for a home have insufficient signal pickup, despite being situated in a region situated with a “green ball”: 1) the square may not be within range of probes that monitor the quality of emissions; 2) the house can be a satellite zone; 3) optionally, a lack of signal quality may be due to any failure in the antenna in the box or any other component used in domestic DTT installation.

Anacom further provides a telephone number (800 200 838) for consumers take doubts about the quality of emissions or on network probes that were installed with the purpose of gathering information more precise on the DTT network.

the network probes It began to be implemented in late 2013 as a mechanism to confront the operator that ensured the provision of transmission (PT) with data on the quality of DTT. The probes are based on technology developed by two Portuguese companies. The monitoring network at a cost of 447,000 euros. To date, the information gathered by the probes was just to “use” internal Anacom. Starting today, this data is available to the public.