What is LTE? How HD RANGER+ can identify interference in TV systems

LTE or fourth generation mobile technology can generate interference in terrestrial TV and radio reception systems. Having appropriate test and measurement instruments makes it possible to detect them in time and take preventive measures to avoid them.

The use of mobile applications in the 800 MHz band, which is part of the “digital dividend”, can thus interfere with television signals in certain circumstances. The new mobile applications (called LTE, Long Term Evolution) use frequencies also used in digital terrestrial television (DTT or DVB-T) and in digital cable television networks (DVB-C).

The use of LTE devices, such as LTE mobile phones or LTE base stations, can cause interference to the digital terrestrial television (DVB-T) and/or digital cable television (DVB-C) of the LTE user himself or his neighbors when the frequencies coincide. It is expected that interference will occur in the reception of digital terrestrial television (DVB-T) l- and/or in digital cable television (DVB-C).

Whether interference occurs depends on many different factors. Not only the signal strength of DVB-C or DVB-T must be taken into account, but also the emission and location of the LTE receiver. The devices, cables and antennas used are also very important. It is very difficult to determine in advance where interference is coming from. In theory it is possible that, in a block of flats, some homes are affected and others are not.

Having appropriate test and measurement instruments makes it possible to detect them in time and take preventive measures to avoid them. Therefore, the HD Ranger+ field meter from Promax It can be very useful in these environments.