if get a dual tuner receiver am i automaticaly charged the $5 a month like the extra receiver charge or can i not use the other output and not be charged
You sort of answered your own question. A receiver is a physical box. Some receivers (boxes) have dual tuners in them (tv1 and tv2)
Every charge I've ever seen is per-receiver (box). Nothing is per-tuner.
With a dual-tuner receiver there should be no difference in your bill whether or not you use tv2
Mark