Channel Selector??

[Tanner]

I am looking for a channel selector or someone who can build one for me. This is what I want to do.
I need a 3 or 4 channel video selector that switches from one channel to the next and loops back to channel 1 and so on.  I am wanting to hook up 3 or 4 cctv cameras to this box and flip from one camera to the next by a single button. (not individual buttons like a quad or something. Radio shack has one they sell however  I need the  control button to be in a different place than the box is in. The installation is for a boat, and I want the person to be able to flip through his cameras from a single push button on the dash.  Any help would be great.

Thanks

Todd

P.S. i need 43 or 4 inputs and only 1 output as we only need to view 1 at a time

[esp1]

hi todd,
As you are aware there are lots of A/V channel selectors/scanners available.

Depending how far away from the scanner you want the remote push button to be, you can attach extension wires to the switch inside the scanner.  Add a low value resistor in series with high side of the button and a 0.1uF cap across the switch in the box.

I have extended my switch about 15mtrs and it works OK.