Interference coupling on armored installation cables, measured in a reverberation chamber

Armored installation cables are often intended to be buried in the soil. The benefits of such armor for frequencies up to a few MHz are generally known. We determined the transmission parameters of such a cable with a network analyzer, and measured the shielding effectiveness of the armor up to 1 GHz in a reverberation chamber. A solid shield coaxial cable with a small hole acted as calibration.