Originally Posted by
Barry
That is precisely what I meant when I said "the shield is floating and will have no effect, apart from increasing the capacitance slightly". Capacitance in this instance means that between the two inner cores being used for the signal and return.
I have heard unscreened twisted-pair cables used as interconnects, and I have heard 300 Ohm ribbon aerial feeder used as interconnects. They 'work', but offer little or no protection from RFI or any other electromagnetic interference.