The text says the 8 cards are connected to one antenna. To me it sounds like he's doing it because each card only gives him a fraction of the bandwidth he needs

The text says the 8 cards are connected to one antenna. To me it sounds like he's doing it because each card only gives him a fraction of the bandwidth he needs to cover. Edit: I don't understand why he needs that much bandwidth though - maybe he just happens to have the cluster, but I suspect he could get basically a 1/8 slice (full height, but only covering 1/8th of the width of the picture) with only one receiver.