Interference is likely to be between 800mhz UPLINK frequencies ( return channel from phone to cell) where the PHONE signal is weak. It strikes me that this problem will be more common in rural areas where distances to cells/coverage will be more of an issue and will result in LTE devices upping their transmission power to compensate.
A very good explanation here. http://stakeholders.ofcom.org.uk/bin...LTE-uplink.pdf
I am not saying it did not play a part in Channel 30 being selected at 3Rock seeing as 3Rock is one of the main phone mast complexes in Dublin and was key to 088 coverage back in the day in the 800mhz band. However in the cities there will be a trend towards smaller mobile cells at 1800mhz and 2600mhz frequencies. From the conclusion in the link above.
For the case of continuous LTE UE interference transmission and a weak DTT signal of -70dBm, the minimum protection distance varied from 0.9 meters for the best receiver type to tens of meters for the worst performing receiver. For a stronger DTT signal of -50dBm, the analysis shows that most DTT receivers can operate within 1m of an interfering LTE UE. Some of the receiver types needed more separation, with the worst case receiver requiring a 6.5m separation. With a strong DTT signal of -30dBm, all but one of the receivers (the Can tuner 7 MHz) could operate within 1m of the LTE UE. For both continuous and discontinuous LTE interference transmission, DTT receivers with set top antennas required greater separation from LTE UEs than DTT receivers with roof top antennas. The MCL analysis shows that this is due to the elevation pattern of the DTT antenna, although in practice the walls of the building and height difference would help isolate the DTT antenna from UE interference. Since we assume a worst case of free space path loss and no obstructions for the interfering path, we can expect that roof top DTT receivers may still work well at smaller separation distances than those shown in this report. In this case, the dominant source of LTE interference may be from an alternate leakage between the indoor components, e.g., via the fly lead of the DTT. Such forms of interference have not been considered in this study.
Good quality drop cables from the wall to the TV will mitigate many of these issues....locating the TV socket higher up the wall behind the telly, thereby shielding the cable with the telly itself....would also make sense. Particularly out the country.
Dodgy 4G LTE outdoor 'signal boosters' will most likely be the biggest single problem.