When I use any ethernet cable other than the stock cable that came with my Bluesound Node2 I get much noise. I have tried three, the latest being a Nordost Heimdall2. The other 2 I heard about here, Monoprice and Supra both cat8. ???
With the twisted pair, you wound need to be running them pretty close. Packet bursts could demodulate to audible frequencies so there is a mechanism for the noise transfer even if the transmission frequency is high. I suspect this would be not much of an issue at 100M or 1Gig, more at 10M though since those high frequencies would be too high to even be demodulated as bursts at the power level.
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