Switch a coaxial signal at a certain interval?
 

I couldn't find a forum to fit this post, so I decided to stick it in here.

Is there such a thing like a special box where you can plug in 2 coaxial signals from 2 different cameras, and then at a certain interval, like every 10 seconds or so, it would switch between those signals to output it to like a tv or something?

Nevermind, I found one.

http://www.safe-mart.com/4auseswvt.html