I am willing to try to please youDid you run a magnet over the connector on that cable?
I'm willing to bet at least the knurled ring on that connector is steel if not the whole thing.
but do you think that a manufacturer of antenna cables with A++ shielded products (105db) used in radio, communications, laboratories, military uses would specially manufacture connectors to add interference? And in addition, they would test every cable to provide an ISO 9001 report instead of taking Chinese 50cc connectors ? The connectors are in contact with the first shielding envelope.
https://messi.it/dati/immagini/CBNCBROAD50-M-50-Ohm-BNC-for-103mm-cabAll1_EN.pdf