You are right Joe and I have too much built around Never Twice the Same Color (NTSC). I have a periscope camera, transmitter, and I know NTSC the best. To convert to all digital would be a major expense. My periscope camera is called a "snake camera" which is very tiny, less than 1/2" square! Then there are all the specialized optics as the periscope uses 3 mm lenses!