but with longer and curved and different size fins, like
I know super bad example the grass thing but I can't put into words the image in my head... Also, I don't think small fins like grass are good, stay with big fins, but the grass is the curved example.
Ow and if you're going for long wire type fins, make them spread across the whole case.... Probably look like crap I know, but all I can think about now is a flowery type heatsink that rises from the CPU into the sky to cool it... =)))
I'm assuming you have some specialty coax and not run of the mill RG-6 as this is mostly a copper clad steel core center conductor. Just don't want you to go to all the trouble of stripping 200' to find out at the end its steel.