6 camera system Un viewable,router interference junk?

[Brian H]

What module did you get to receive the RF commands from the USB Adapter?  TM751; RR501? Without a power line control signal you would never be able to turn one camera on as the others go off.

Yes there are groups of four cameras. Same House Code A-P. Unit codes 1-4;5-8;9-12 and 13-16. Turn one on the other three go off. To have more than four cameras it looks like the software sends an Off to the house code turning the camera off. Then it turns on the camera chosen to be on.