Dual Phantom setup: how long did it take you?

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Setting up 3 Phantoms is almost as easy as to set up 2, given that you have one power network without surge protectors. In this case the built-in PLC system reliefs you from all headaches about wifi signal strenght or network cabling. The effort is almost linear with the number of Phantoms, maybe until you have 5. You need to walk a bit around to touch/caress them during setup. That's all
For more than 5 Phantoms I can imagine that you start to get bandwidth problems with multiple hires streams.