I usually have one or two projects each year where I need to keep a PC in one room and display a VMS client application in another room. I've had good luck with fiber extenders (usually using the video portion of a KVM extender), however fiber isn't always in the client's budget. In the past year I've tried using extenders that transmit over category cable, with mixed results. The two products I have used are the DVI-D Digital Extender from Black Box and the DVI Video Extender from StarTech. I haven't seen much of a difference between the two products, as both exhibit the same problems. There is very little configuration on these units. Once installed the video displays for a period of a few days, and then video signal begins to drop. The cables need to be unplugged from the video card and monitor and then reapplied, after a few weeks/days the cycle is repeated. Also when there is a large refresh of the image on the monitor (an application window is closed), the video signal is lost.
I was wondering if anyone has any product recommendations that they like for these applications. In my case, I'm usually under 75' of cable length between the host PC and the monitor.