Any sufficiently long wire is an antenna. If your neighbor is using amplitude modulation, there isn't much of a difference between the signals your macbook prod

Any sufficiently long wire is an antenna. If your neighbor is using amplitude modulation, there isn't much of a difference between the signals your macbook produces on its end and the signals his radio waves induce directly into the wire. EDIT: this is why differential signalling [1] over twisted pair is used for ethernet, USB, etc. Otherwise the radio waves already present everywhere would garble the signal for any non-trivial length of cable. 1. https://en.wikipedia.org/wiki/Differential_signaling https://en.wikipedia.org/wiki/Differential_signaling