video rca cable, how long?

[muno]

How long can I draw a rca cable solely for video purposes without deteriorating the video quality?

I need to run a cable approx. 15m, but I think the signal in rca will be too weak at the other end.

15m is pretty distant for an RCA. Is there a way you could use large coaxial cable instead? Internal cabling for normal cable runs can handle 15m easily without significant signal loss.

Notice I said significant, everyone who is about to explain to me (the guy that designed cable systems for a living) the physics of line loss and distance.

[muno]

Well, it's supposed to come out of my video card, and end up in tv.
I'll probably have svideo and composite output from the card, and it will go in to scart-rca adapater.
//edit: The scart adapter is in tv of course, which is 15m from the output of my video card.

I don't know what large coaxial cable is, or if I can implement it.

It's the cable that goes into the back of your TV from you cable provider. So s-vid or composite. Hm. I recommend moving the computer closer to the TV. It'd be easier.

[muno]

Unfortunately that is not possible. The only way to move the computer 'closer', would be to drill holes to the wall and save some 7m

[Xtreeme]

I think he means. RF cable. The ones used for satalite dish-cable tv and antenna's. R6 is for sat. dishes and has copper all through. Much stronger signal over long distances. Think my Sat. manual said 100ft without a booster.