From reading this thread alot of guys are still using Rg-6 for base band video signals, and are trying to run RGB or COMPONENT over common rg-6!
Are you using CCTV specified cable for this?
Common Catv Rg-6 does not have the freeqs for that app.
I have to say that most commercial jobs that I have been involved with in the past would spec in 59 for all base band due to copper instead of steel. But this new tinned copper braid "Serial Digital" coax from liberty can let us all make our own RGB or Components in house or on site.

It just scares me to see alot of guys throwin around Rg-6 for everything and expecting the new guys to know that there is a difference in cabling.

My .02