Path: csiph.com!usenet.pasdenom.info!weretis.net!feeder4.news.weretis.net!eternal-september.org!feeder.eternal-september.org!mx02.eternal-september.org!.POSTED!not-for-mail From: "ps56k" Newsgroups: alt.internet.wireless,comp.dcom.cabling,comp.dcom.lans.ethernet Subject: Re: Shielded RJ-45: Internal vs External Ground? Date: Tue, 13 Jan 2015 12:34:17 -0600 Organization: me Lines: 34 Message-ID: References: <1de1ba98b5a4o1sun0bcing0hgbsrv5t92@4ax.com> Injection-Date: Tue, 13 Jan 2015 18:33:50 +0000 (UTC) Injection-Info: mx02.eternal-september.org; posting-host="66df835e82f4b7980cd79cc84b4f729e"; logging-data="30135"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19lrp0aiBU1qaiQ5rHqBoKi" X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 X-Vipre-Scanned: 00656F42008D520065708F X-RFC2646: Format=Flowed; Original X-Newsreader: Microsoft Outlook Express 6.00.2900.5931 X-Unsent: 1 Cancel-Lock: sha1:gr8DCbRkhpN39JJXZex0P5bG5vM= X-Priority: 3 X-MSMail-Priority: Normal Xref: csiph.com comp.dcom.cabling:126 comp.dcom.lans.ethernet:176 X-posting - for those in the Cabling world - "Jeff Liebermann" wrote in message news:vjq2bah1h654phjj01khbmi3t639e7svmb@4ax.com... > On Sat, 10 Jan 2015 09:45:52 -0500, "(PeteCresswell)" > wrote: > >>Self-serving promo for their house brand? That was my kneejerk >>reaction.... but now I know that there are several threads in the >>Ubiquiti fora that make it pretty clear that electrostatic discharge is >>a consideration. For example: http://tinyurl.com/m5vttf3 > > Static buildup on metal structures is only a problem when the humidity > is quite low. My guess(tm) is 20% or less. That's not a problem in > the bay area, and certainly not in a wet marine environment. > > Shielding does do well for EMI/RFI protection. If you're near a > transmitter of any significant power level, I would use shielded > cable. Even so, I doubt if it would do any good because most of the > Ubiquiti radios use unshielded plastic case. > > Note that there are aftermarket products that provide shielding if > needed. > > If you're using it for cellular backhaul, it's probably a good idea. > > > -- > Jeff Liebermann jeffl@cruzio.com > 150 Felker St #D http://www.LearnByDestroying.com > Santa Cruz CA 95060 http://802.11junk.com > Skype: JeffLiebermann AE6KS 831-336-2558