En 50147-1 Pdf -

Because these are protected industrial standards, you generally have to obtain them through authorized distributors. You can find the PDF for purchase at:

details the use of EN 50147-1 for validating the performance of custom-built shielded chambers, specifically using horn and monopole antennas up to 18 GHz. A New Shielding Effectiveness Measurement Method PDF from Core.ac.uk en 50147-1 pdf

Several academic papers and technical guides discuss its application, uncertainty, and limitations: Academic Papers and Research Critical Aspects of the Uncertainty Budget Because these are protected industrial standards

Without referencing EN 50147-1 PDF’s procedures, your chamber validation will not be accepted by notified bodies for CE marking, FCC, or ISED certification. en 50147-1 pdf

The document outlines the technical requirements for validating that an enclosure is properly "sealed" against electromagnetic interference (EMI).