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What are the differences between shielded and unshielded cables?

This is a an article from the recent Superior -  Essex newsletter that is often ask by our customers: Q: What are the differences between shielded and unshielded cables? A: Shielded cables contain a screen, sheath, or cover that substantially reduces the coupling of electric, magnetic, or electromagnetic fields into or out of circuits or transmission lines. The purpose of shielding is to protect the communications circuit from outside electrical interference and/or outside eavesdropping. Click here for the complete article
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