Coax cables are very well insulated I don't think you will have a problem,main thing is to leave as much space between the two as you can,it's more of a heat issue than a signal issue,don't strap them both together,heat rises so place the cable below or alongside the pipe if you can,the pipes should be lagged anyway,you have no options but to run it or find an alternative route.Just do it and don't complicate the issue of signal strength,you won't hear music from your radiators.You are worrying to much.
Rich, March 2010
