Though it looks black in the picture, normally it is bare copper or bare tinned copper. It touches the shield all along the cable and is used to "drain" the electrons to ground. You have to strip the jacket back a little farther than non-shielded cable to have some drain wire to work with. You don't have to use shielded connectors, though that is an easy way. I often get a ground bar designed for a circuit breaker box and ground everything there, so I strip back several inches of jacket and run the drain wire to the ground block. This gives me a single point for all ground and does not drain induced charges through the board.
Josh Luthman wrote: > *Face plant* > > Never heard of those before... > > I'm assuming the black wire in this picture is the drain wire? It doesn't > drain water, but is conductive - is this right? > http://en.wikipedia.org/wiki/File:FTP_cable3.jpg > > Josh Luthman > Office: 937-552-2340 > Direct: 937-552-2343 > 1100 Wayne St > Suite 1337 > Troy, OH 45373 > > "When you have eliminated the impossible, that which remains, however > improbable, must be the truth." > --- Sir Arthur Conan Doyle > > > On Mon, Aug 3, 2009 at 10:39 PM, Jayson Baker <[email protected]>wrote: > > >> Uhm, if you use shielded cable, you must use shielded connectors. >> Using unshielded connectors, with shielded cable, is like having a 100' >> long >> lightning/static pickup cable that will drain right into your board. >> >> Shielded connectors, shielded cable, drain wire soldered on, into a good >> grounded POE injector == no problems for many years >> >> On Mon, Aug 3, 2009 at 8:36 PM, Josh Luthman <[email protected] >> >>> wrote: >>> >>> You lost me - drain wire? Soldered onto a plastic rj45? >>> >>> Josh Luthman >>> Office: 937-552-2340 >>> Direct: 937-552-2343 >>> 1100 Wayne St >>> Suite 1337 >>> Troy, OH 45373 >>> >>> "When you have eliminated the impossible, that which remains, however >>> improbable, must be the truth." >>> --- Sir Arthur Conan Doyle >>> >>> >>> On Mon, Aug 3, 2009 at 10:27 PM, Jayson Baker <[email protected] >>> >>>> wrote: >>>> >>>> We also solder the drain wire from the cable onto the RJ45 connector >>>> >>> after >>> >>>> we crimp it on. >>>> Key is to ensure you have a good ground from A to Z. >>>> >>>> On Mon, Aug 3, 2009 at 8:26 PM, Josh Luthman < >>>> >>> [email protected] >>> >>>>> wrote: >>>>> >>>>> I am using shielded cable and Pac POEs andd lost all 3 APs here a few >>>>> weeks ago. >>>>> >>>>> On 8/3/09, Jayson Baker <[email protected]> wrote: >>>>> >>>>>> Try using shielded cable, and you won't have a problem. >>>>>> We're installed thousands in Colorado (second worst lightning in >>>>>> >> the >> >>>>>> country, next to Florida) and everytime we install without shielded >>>>>> cable-it's junk after a storm. We use shielded cable on ALL >>>>>> installs-customer installs as well. And the good grounded >>>>>> >>> PacWireless >>> >>>>> POE >>>>> >>>>>> injectors. With thousands in service, it's rare we get a lightning >>>>>> >>>>> related >>>>> >>>>>> service call. >>>>>> We justify the extra couple dollars in cable by saving the cost of >>>>>> >>>> truck >>>> >>>>>> rolls, replacement equipment, and unhappy customers. >>>>>> >>>>>> On Mon, Aug 3, 2009 at 6:10 PM, Josh Luthman >>>>>> <[email protected]>wrote: >>>>>> >>>>>> >>>>>>> Every 133 I used had a problem. Be it software, hardware, DOA, >>>>>>> >>>>> lightning, >>>>> >>>>>>> whatever. Out of dozens out there none survived and were >>>>>>> >> replaced, >> >>>>>>> necessarily, by a newer board. >>>>>>> >>>>>>> Josh Luthman >>>>>>> Office: 937-552-2340 >>>>>>> Direct: 937-552-2343 >>>>>>> 1100 Wayne St >>>>>>> Suite 1337 >>>>>>> Troy, OH 45373 >>>>>>> >>>>>>> "When you have eliminated the impossible, that which remains, >>>>>>> >>> however >>> >>>>>>> improbable, must be the truth." >>>>>>> --- Sir Arthur Conan Doyle >>>>>>> >>>>>>> >>>>>>> On Mon, Aug 3, 2009 at 8:05 PM, Dennis Burgess < >>>>>>> >>>> [email protected] >>>> >>>>>>>> wrote: >>>>>>>> >>>>>>>> Nothing that I have seen. Sure they were not repackaged by your >>>>>>>> >>>>> vendor? >>>>> >>>>>>>> And/or like I suggested overclocked. >>>>>>>> >>>>>>>> -----Original Message----- >>>>>>>> From: [email protected] [mailto: >>>>>>>> >>> [email protected] >>> >>>> ] >>>> >>>>> On >>>>> >>>>>>>> Behalf Of Forbes Mercy >>>>>>>> Sent: Monday, August 03, 2009 6:53 PM >>>>>>>> To: WISPA General List >>>>>>>> Subject: [WISPA] Defective Microtik >>>>>>>> >>>>>>>> Is anybody having problems with R433AH's Microtik cards out of >>>>>>>> >> the >> >>>> box >>>> >>>>>>>> lately? We purchased four this year so far and one beeped once >>>>>>>> >>> only >>> >>>>> on >>>>> >>>>>>>> 18v not higher or loser voltages but it never beeped twice or >>>>>>>> >> got >> >>> to >>> >>>>> an >>>>> >>>>>>>> interface we could use. >>>>>>>> >>>>>>>> We just installed another one and it now is giving kernel errors >>>>>>>> >>> and >>> >>>>>>>> unless authenticate all is on everyone loses registration every >>>>>>>> >>> few >>> >>>>>>>> hours. We updated the firmware but with no positive result. >>>>>>>> >>>>>>>> My costs for tower climbers and anger from the 150 customers on >>>>>>>> >>> the >>> >>>>>>>> radio that went bad the day after we installed it is getting >>>>>>>> >>> costly >>> >>>>> and >>>>> >>>>>>>> wearing on my staff. We're going back right now to reinstall >>>>>>>> >> the >> >>>> old >>>> >>>>>>>> 133 board. Any others having these problems? >>>>>>>> >>>>>>>> Forbes Mercy >>>>>>>> President - Washington Broadband, Inc. >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>> ------------------------------------------------------------------------ >>> >>>>>>>> -------- >>>>>>>> WISPA Wants You! Join today! >>>>>>>> http://signup.wispa.org/ >>>>>>>> >>>>>>>> >>> ------------------------------------------------------------------------ >>> >>>>>>>> -------- >>>>>>>> >>>>>>>> WISPA Wireless List: [email protected] >>>>>>>> >>>>>>>> Subscribe/Unsubscribe: >>>>>>>> http://lists.wispa.org/mailman/listinfo/wireless >>>>>>>> >>>>>>>> Archives: http://lists.wispa.org/pipermail/wireless/ >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >> -------------------------------------------------------------------------------- >> >>>>>>>> WISPA Wants You! Join today! >>>>>>>> http://signup.wispa.org/ >>>>>>>> >>>>>>>> >>>>>>>> >> -------------------------------------------------------------------------------- >> >>>>>>>> WISPA Wireless List: [email protected] >>>>>>>> >>>>>>>> Subscribe/Unsubscribe: >>>>>>>> http://lists.wispa.org/mailman/listinfo/wireless >>>>>>>> >>>>>>>> Archives: http://lists.wispa.org/pipermail/wireless/ >>>>>>>> >>>>>>>> >>>>>>> >>>>>>> >>>>>>> >> -------------------------------------------------------------------------------- >> >>>>>>> WISPA Wants You! Join today! >>>>>>> http://signup.wispa.org/ >>>>>>> >>>>>>> >>>>>>> >> -------------------------------------------------------------------------------- >> >>>>>>> WISPA Wireless List: [email protected] >>>>>>> >>>>>>> Subscribe/Unsubscribe: >>>>>>> http://lists.wispa.org/mailman/listinfo/wireless >>>>>>> >>>>>>> Archives: http://lists.wispa.org/pipermail/wireless/ >>>>>>> >>>>>>> >>>>>> >>>>>> >> -------------------------------------------------------------------------------- >> >>>>>> WISPA Wants You! Join today! >>>>>> http://signup.wispa.org/ >>>>>> >>>>>> >> -------------------------------------------------------------------------------- >> >>>>>> WISPA Wireless List: [email protected] >>>>>> >>>>>> Subscribe/Unsubscribe: >>>>>> http://lists.wispa.org/mailman/listinfo/wireless >>>>>> >>>>>> Archives: http://lists.wispa.org/pipermail/wireless/ >>>>>> >>>>>> >>>>> -- >>>>> Josh Luthman >>>>> Office: 937-552-2340 >>>>> Direct: 937-552-2343 >>>>> 1100 Wayne St >>>>> Suite 1337 >>>>> Troy, OH 45373 >>>>> >>>>> "When you have eliminated the impossible, that which remains, however >>>>> improbable, must be the truth." >>>>> --- Sir Arthur Conan Doyle >>>>> >>>>> >>>>> >>>>> >>>>> >> -------------------------------------------------------------------------------- >> >>>>> WISPA Wants You! 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