I was totally on the wrong track there. :oops: When some one mentioned telephone cable my mind went back to the old cotton wrapped inter-woven cables that were around "when I were a lad" (assume generic northern accent). They weren't co-ax
As for the other kind of curly cable, sprung co-ax, I've only ever found it to be of use picking up Taxi and police radio signals, you can actually tune it in by moving closer to or further away from your amp. As for it being the secret ingredient in Bryan Mays' sound

I think it's time for all the closet Queen fans to tell us all about the myriad contraptions Bryan uses, the curly cable is not in evidence on the DVD I have of them..