Results of measurements of digital terrestrial television signal - UKE

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Results of measurements of digital terrestrial television signal

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More than 98% of the locations tested have no problem receiving signal from digital multiplexes - as results from the measurements verifying the possibility to receive digital terrestrial television signal conducted by the Office of Electronic Communications (UKE) in seven provinces.


Only 24 locations will require further action of broadcasters and EmiTel aimed at ensuring digital signal reception in their area.

The possibility of the reception of digital terrestrial television signal (DVB-T) was assessed in areas where analogue TV stations will be switched off in the first and second stage. This area covers 505 communes (including 6,754 localities) inhabited by more than 6 million Poles.

In the first stage, on 7 November of this year, the analogue signal from terrestrial transmitters will be switched off in the area of Lubuskie Province and in some communes of Lower Silesia, Wielkopolskie and Zachodniopomorskie Provinces. In the second stage, on 28 November of this year, analogue transmitters broadcasting signal will be switched off in Pomorskie Province and in parts of the communes of Kujawsko-Pomorskie and Warmińsko-Mazurskie Provinces.

Scope of measurement

Field tests of the propagation of the digital terrestrial television signal were carried out from July to mid-September 2012 on the basis of the measuring units of the Regional Branches of the Office of Electronic Communications. Almost 8,400 measurements required the involvement of employees of 10 out of the 16 regional branches of UKE. The total measurement time is nearly 1,800 hours, and mobile measuring stations covered over 38,000 km.

The measurements were conducted in 1,217 locations for which previous analysis indicated that there might be problems with the digital signal (e.g. those located on the border of the signal coverage from the transmitter or affected by terrain obstacles). Laboratory analysis conducted before field measurements indicated that in those localities in 221 communes reception can be much more difficult or even impossible due to low signal level (between 56-78 dBuV/m).

Results of field measurements

Today, it is possible to easily receive the DVB-T signal in 1,193 locations (98%). Only in 24 locations the reception of DVB-T signal is conditionally possible or there is no possibility of its reception. This applies mainly to locations where so far analogue terrestrial TV signal could not be received or its reception has been significantly hampered.

Conditional reception means that with good propagation conditions and placement of the receiving antenna at the correct height the DVB-T signal is available. However, disturbances in the form of frame-image, interrupted reception or lack of synchronisation are possible. In this regard UKE recommends that antennas be mounted on the outside of buildings at a minimum height of 10 metres in places where reception of the signal is difficult.

- Based on signal measurements to date it can be firmly stated that at this stage the process of digitisation of television meets the assumptions provided for in the Act on the implementation of digital terrestrial television for ensuring the required coverage for at least 95% of the Polish population - said Magdalena Gaj, President of the Office of Electronic Communications. - With digitisation viewers today have access to a larger number of television channels, new higher-quality television signal and additional services - added the President.

The results of the evaluation will be communicated to broadcasters of television programs and will provide valuable support for possible efforts to improve the coverage of digital terrestrial television, for example, by increasing power, changing frequency, increasing transmitter antennae or with the so-called illumination.

The results of measurements performed in the areas covered by the 1st and 2nd stage of switching off analogue television transmitters indicate that proper reception of digital broadcasts is possible in the vast majority of locations, i.e. 98%.

Problems with the reception of the digital signal occur in single locations and are caused by the landform features along the propagation of the signal from the terrestrial DVB-T transmitter to the receiving antenna.

Digital reception from Gdańsk Chwaszczyno transmitter

In the case of the central part of Pomorskie Province, these problems stem from the weak current parameters of the GDAŃSK - Chwaszczyno broadcasting station, which upon the switching off of analogue stations will be significantly improved - changes will include: frequency, transmitting antenna height and characteristics of the transmitting antenna.

This will improve the conditions for the reception of DVB-T signal for locations that are within the range of the transmitter in Chwaszczyno, both those in which the reception was conditional: Stężyca, Szymbark, Wejherowo and Zamostne, as well as those in which digital signal reception has been impossible until now, i.e. Lipusz, Płocice, Sulęczyno Studzienice and Żarnowiec.

Simulations carried out by the Office of Electronic Communications confirmed that the signal level for those areas will exceed 56 dBuV/m, thus enabling digital signal reception.


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