I want to take the output from my VHS player and run it to my video card in my computer. What is the longest length that I can use and get a quality signal? At the moment I am looking at approx. 15".
You can run them for about 1000' (but you have to use heavier cable), for 20' I'ld say you are fine with any. if you want to go 35 or more, using a RG59 (standard Coax patch cable) and use adapters to put RCA plugs on te ends.