I have a customer who owns a three story commercial building with a couple of cell attena (sp?) on the roof. I have to go up there every now and then to change light bulbs. When they were first put in there was a sign that said "warning: FCC restricted area", but that sign has since fallen off and blow away I think. It had some article # on it.

Are any of you familiar with the saftey issues of exposure to RF? Are there any saftey precautious I can take when up there?

Something else I thought as I drove past a bucket truck next to a tower with a guy up there; When people are up there servicing those, do they have to shut the tower down or do they work right there with all that RF?