Yes, though to compare a cable's susceptability to RFI, one need's to know what the surface transfer impedance (ZT) is for the cable. Rarely quoted by manufacturers as it is difficult to measure, but the IEC recommendation is for it to be no more than 100mOhm/m at 30MHz.
Sometimes cable manufacturers (such as the Swiss cable company Huber & Suhner) will quote a rejection level to external RF in dB for cables having a 50Ohm characteristic impedance and terminated by the same impedance:
20.log(ZT/100) for 1metre length,
though this is somewhat academic since audio cables are terminated with widely differing and different impedances, and it is not at all clear what these impedances are at radio frequencies (> 1MHz).
Last edited by Barry; 24-01-2018 at 17:12. Reason: correction and addition
Barry
Interesting Barry.
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