If you don't ground both ends you're creating a huge "antenna" to pick up static and drain it right into your board/POE. Always use shielded connectors on both ends, and ground both ends.
On Tue, Aug 4, 2009 at 7:26 AM, Scott Carullo <[email protected]>wrote: > > While we are on the STP topic... It's been noted several times that you > are only supposed to ground ONE end of the STP shield otherwise you are > creating for yourself a ground potential difference. The idea behind the > shield is just that - shield noise away shunted to ground. On a typical > install lets cal this the radio side use plastic connector and inside use > grounded one with tall the other lightning goodies. What is the consensus > on this while we are on topic :) > > Scott Carullo > Brevard Wireless > 321-205-1100 x102 > > -------- Original Message -------- > > From: "Chuck Hogg" <[email protected]> > > Sent: Monday, August 03, 2009 11:10 PM > > To: "WISPA General List" <[email protected]> > > Subject: Re: [WISPA] Defective Microtik > > > > Yea, we solder and heat shrink the ends on all our tower gear. Less > > problems, but still doesn't stop direct strikes, lol. > > > > Regards, > > Chuck Hogg > > Shelby Broadband > > 502-722-9292 > > [email protected] > > http://www.shelbybb.com > > > > > > -----Original Message----- > > From: [email protected] [mailto:[email protected]] On > > Behalf Of Jayson Baker > > Sent: Monday, August 03, 2009 11:09 PM > > To: WISPA General List > > Subject: Re: [WISPA] Defective Microtik > > > > Yea... I don't think it's black, just how the picture was taken. It's > > usually a silver or gold wire, seperate from the others and not > > insulated. > > Sometimes it's stranded as opposed to being solid. You don't > > necessarily > > have to solder it - but make sure it's got a good electrical connection > > to > > the shielded RJ45 connector. And that the shield of the RJ45 connector > > has > > a good electrical connection to the boards plug. And the antenna to the > > board. And the RJ45 to the POE, and POE to ground. > > > > You get the idea. > > > > Like I said, we have thousands of these in service in Colorado--all that > > use > > shielded cable have no problems at all. Those that don't are guaranteed > > problems sooner or later. > > Our Costa Rica operation doesn't use shielded cable (supposedly it's too > > costly to import), so everytime there's a storm dozens of boards are > > thrown > > away. > > > > On Mon, Aug 3, 2009 at 8:46 PM, Josh Luthman > > <[email protected]>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! 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