Yes Twisted Pair, when you see what appears to be a tire valve stem, that's a point where technicians could test pressure or connect a pressure source, like an air tank. Even the round repeater cases (stainless steel or light green round cans) can be equipped to be pressurized to keep moisture out of the electronics.
Yeah, Bill, I thought about that after I finished my post. I see a few pole-mouted filter/driers around here every once in a while. The nitrogen tanks are just temporary pressure sources until the permanent repair can be made. My bad :bow:
So, what is the actual percentage? I have no clue!
