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[RFI] USB Cable Shield Resistance was: Re: [N1MM+] open question about R

To: N1MMLoggerPlus@groups.io, RFI List <rfi@contesting.com>
Subject: [RFI] USB Cable Shield Resistance was: Re: [N1MM+] open question about RFI & USB
From: Pete Smith N4ZR <pete.n4zr@gmail.com>
Date: Tue, 16 Jan 2024 09:32:01 -0500
List-post: <mailto:rfi@contesting.com>
Interestingly, I just tested the shielding on a USB A to USB C cable I have, which looked like it should be fine, with a transparent jacket over woven shielding and a big ferrite bead - about 1 meter long, and measured 2.7 ohms - not good.  What should be consider to be the upper permissible shield resistance?

Moving this issue to the RFI reflector now...

73, Pete N4ZR

On 1/16/2024 5:01 AM, Janez Majdic via groups.io wrote:
Maybe also good to read:
https://www.yoctopuce.com/EN/article/usb-cables-shielding-matters-as-well

Regards, Janez - S51J
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