<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Brian,</div><div id="AppleMailSignature">you got me interested so I googled & found this...</div><div id="AppleMailSignature"><a href="https://maritime.org/doc/cabling/part4.htm">https://maritime.org/doc/cabling/part4.htm</a></div><div id="AppleMailSignature">There are diagrams of potting arrangements for coaxial cable.</div><div id="AppleMailSignature">They attach a wire to the shielding & send that through the potted through</div><div id="AppleMailSignature">hull fitting, then ground that wire.</div><div id="AppleMailSignature">Alan<br><br>Sent from my iPad</div><div><br>On 1/12/2017, at 3:37 PM, Alan via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><meta http-equiv="content-type" content="text/html; charset=us-ascii"><div>Brian,</div><div id="AppleMailSignature">can you find a cross sectional diagram of the wire you are talking about?</div><div id="AppleMailSignature">Have attached one I found on line as an example. Looks a nightmare to pot.</div><div id="AppleMailSignature">This item has a plastic jacket & could be put in a compression fitting,</div><div id="AppleMailSignature">however I would do what Carsten & Emile have done & put a blue globe</div><div id="AppleMailSignature">fitting on the inside of the hull as well as the outside.</div><div id="AppleMailSignature">My only reservation about this is that depending on how the wires etc are</div><div id="AppleMailSignature">arranged inside the jacket, it could compress unevenly. You could try & fill</div><div id="AppleMailSignature">the area of the cable that is inside the compression fitting with expoxy by</div><div id="AppleMailSignature">cutting into the jacket & shielding & squirting a low viscosity epoxy in there.</div><div id="AppleMailSignature">Alan</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature"><image1.JPG><br></div><div id="AppleMailSignature"><br><br>Sent from my iPad</div><div><br>On 1/12/2017, at 2:28 PM, Brian Cox via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><div style="font-family:Arial, sans-serif; font-size:10pt;"><div>Sean, I'm using and squeeze fitting now for a co-ax line that is good for 600 ft, but there is a plastic core in there that the squeeze fitting can press against, with regular wire it seems like water might try to migrate through.</div><div> </div><div>Brian<br><br>--- <a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a> wrote:<br><br>From: "Sean T. Stevenson via Personal_Submersibles" <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br>To: <a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a><br>Subject: Re: [PSUBS-MAILIST] USB thru hull<br>Date: Thu, 30 Nov 2017 20:21:23 -0500<br><br>No, I meant that the shield should be contiguous from start to end, regardless of how many connectors are in line.<br><br>Sean<br><br><br><br>Sent from ProtonMail mobile<br><br><br><br>-------- Original Message --------<br>On Nov 30, 2017, 18:18, Brian Cox via Personal_Submersibles < <a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:</div><blockquote><br><div style="font-family: Arial, sans-serif; font-size: 10pt;"><div>Sean, So not necessary to have the wire shielded through the short thru hull area?</div><div> </div><div>Brian <br><br>--- <a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a> wrote:<br><br>From: "Sean T. Stevenson via Personal_Submersibles" <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br>To: <a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a><br>Subject: Re: [PSUBS-MAILIST] USB thru hull<br>Date: Thu, 30 Nov 2017 20:12:22 -0500<br><br>Yup. +5V, data+, data-, and ground. Any 4 pin connector should work, but to avoid noise issues you'll probably want to use twisted pair shielded wire, carry the shield through the connector, and depending on the total length of the cable run, 28 to 20 AWG wire (0.81m to 5m length, according to USB 2.0 spec).<br><br>Sean<br><br><br><br>Sent from ProtonMail mobile<br><br><br><br>-------- Original Message --------<br>On Nov 30, 2017, 18:03, Brian Cox via Personal_Submersibles < <a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:</div><blockquote><br><div style="font-family: Arial, sans-serif; font-size: 10pt;"><div>Hi All,</div><div> Has any one ran usb cable thru the hull and out to a camera or other device? I think it's just 4 wires. </div><div> </div><div>Brian</div></div>
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