In the field there are many different configurations of SFN DVB-T/T2 networks but here will be considered three:
-Transmitter spacing is within the safety distance for SFN with high on-air redudancy (Fig.1)
-Transmitter spacing is within the safety distance for SFN with low on-air redundancy (Fig. 2)
-Transmitter spacing is out of the SFN limit (Fig.3)
It is supposed that all transmitters have the same ERP (Effective Radiated Power) and the SFN offset delay.