Those are all very helpful and confirm that one of the signal feeds will feed power to the SWM-8, but they bring up another question.

The drawings never show more than two receivers running off the SWM-8, so the limits of the unit are not shown.

Can SWM-1 be split 8 ways, or can SWM-1 only have up to four receivers and SWM-2 only have up to four receivers? I'm surprised this never occurred to me to ask before!