http://www.lazygranch.com/images/bald/bald_gate_camera1.jpg
http://www.lazygranch.com/images/bald/bald_gate_camera2.jpg

OK, I think I'm losing it. At one time this camera was a pan tilt
zoom. I know so because it tracked us when we had a large group out
there. Now I'm looking at the photographs, and it is not a PTZ. Even
more puzzling, there are no solar cells or wiring.

Now there are two antennas on this setup. One microwave dish, and one
VHF or UHF yagi. Is it possible they blast the camera with microwaves,
convert that power, then beam back the video on the yagi?

The writing on the camera is Cohu, which is the brand of camera. Very
typical around the range.