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Me, too.
Scott Reed Owner NewWays Wireless Networking Network Design, Installation and Administration www.nwwnet.net ---------- Original Message ----------- From: George Rogato <[EMAIL PROTECTED]> To: WISPA General List <wireless@wispa.org> Sent: Sun, 27 Aug 2006 20:31:38 -0700 Subject: Re: [WISPA] Self Adhesive Mini PCB supports for Mikrotik > I've used these guys for grounding the shield of a cat5 cable: > > http://www.oregonfast.net/gofast/Spruce/4460-D%20Shield%20connector-1.pdf > > Eric Rogers wrote: > > I was just referring to the shielding by bonding it to the cat5 crimp on > > ends, not soldiering them to the tower or grounding materials. There is > > only a friction bond between the cat5 end and the grounded casing of the > > surge arrestor. I would think the friction bond would have more > > resistance in a strike, causing it to heat up faster than the resistance > > of the soldier. > > > > > > > [WINDOWS-1252?]> Again, with millions of volts, I dont think the Cat5 cable would hold > > it as well. The key to the whole system is the grounding to the tower > [WINDOWS-1252?]> site itself. In this case, there are 3 runs of 5/8 or larger copper > > running from the grounding grid to the very top of the tower and 2 cad > > welded to the tower base and the grounding grid. Hopefully the > > lightning will choose the path of the copper or tower, and not my run of > > cat5. The shielding and soldier is only to dissipate static buildup and > > keep the potential voltages as close to equal as I can. > > > > > > > [WINDOWS-1252?]> My thoughts are that if the antennas and equipment at the top are > > grounded to the tower, the equipment at the bottom, and all the surge > > suppression for the cat5 and coax runs are all grounded to the same > > ground plane, the potential voltage difference between any one location > > should be near 0, and there should be no need for it to travel up/down > > my cat5 run. > > > > > > > > Hopefully it will never need to go through my soldier joint or the > > pressure of the spring steel in the surge suppression. :) > > > > > > > > Eric > > > > > > > > > > > > ------------------------------------------------------------------------ > > > > *From:* [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > > *On Behalf Of *Scott Reed > > *Sent:* Sunday, August 27, 2006 5:07 PM > > *To:* WISPA General List > > *Subject:* RE: [WISPA] Self Adhesive Mini PCB supports for Mikrotik > > > > > > > > I believe that solder is probably not a good idea here. Lightning can > > build enough heat to melt the solder and thus break the connection. I > > think all ground connections need to be physical connections to provide > > the best protection. > > > > Otherwise, this looks like a good method. > > > > There are several devices designed to give mechanical and electrical > > connection to shields, etc. > > > > Scott Reed > > Owner > > NewWays > > Wireless Networking > > Network Design, Installation and Administration > > www.nwwnet.net <http://www.nwwnet.net/> > > > > > > *---------- Original Message -----------* > > From: "Eric Rogers" <[EMAIL PROTECTED]> > > To: "WISPA General List" <wireless@wispa.org> > > Sent: Sun, 27 Aug 2006 14:36:16 -0400 > > Subject: RE: [WISPA] Self Adhesive Mini PCB supports for Mikrotik > > > >> I myself use them at our tower sites at the bottom AND the top. I had a > >> tower get struck, directly and lost everything...including the switch at > >> the location. Since then, I figured 3mil volts can go through thin > >> cat5e jacketing. Even through the shielding if it isn't properly > >> grounded. Now I soldier the casings onto the crimp on ends when > >> possible so hopefully it will go to ground without hitting the copper > >> inside. I use the Hyperlink surge protection, and the keystone jacks > >> are for shielded cabling, so it goes to ground. The surge suppression > >> is just added protection. Remember, electricity takes the least path of > >> resistance, when metal heats up, it becomes more resistant. So that > >> bolt of lightning can go where it wants... > >> > >> That said, I am giving the electricity 2 points to exit to ground, so > >> hopefully I don't lose any more equipment. > >> > >> The tower is WELL grounded, it is an old AT&T sight, with the copper > >> mesh in the ground, and all buildings and towers have copper 5/8" or > >> larger going up the sides and cad welded to them and also to the grid > >> below ground. LOTS of money... > >> > >> I don't at the CPE, just use the built-in surge suppression and > >> definitely ground the CPE for static. I see it as if the house gets > >> struck by lightning; they have more to worry about than internet... Now > >> if a tower gets struck, I have hundreds down, not 1. > >> > >> Eric Rogers > >> > >> -----Original Message----- > >> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > >> Behalf Of Jeromie Reeves > >> Sent: Sunday, August 27, 2006 12:00 PM > >> To: WISPA General List > >> Subject: Re: [WISPA] Self Adhesive Mini PCB supports for Mikrotik > >> > >> Do you find that a surge supressor at the CPE is better then at the > >> internal PC/Router/Switch? Or do > >> you use one at each end? > >> > >> Jeromie > >> > >> Harold Bledsoe wrote: > >> > >> >I can answer some of these... > >> > > >> >It looks like a Zinwell B191 RTL8181 with a Citel indoor surge > >> >protector. > >> > > >> >-Hal > >> > > >> >-----Original Message----- > >> >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > >> >Behalf Of Jeromie Reeves > >> >Sent: Saturday, August 26, 2006 9:24 PM > >> >To: WISPA General List > >> >Subject: Re: [WISPA] Self Adhesive Mini PCB supports for Mikrotik > >> > > >> >Looks good. What radio are you using with what looks to be a Realtek > >> >SoC? Is that > >> >a PoE splitter, a surge supressor, or both? How long is that RF > >> pigtail? > >> > > >> >Jeromie > >> > > >> >Brian Rohrbacher wrote: > >> > > >> > > >> > > >> >>I take a self tapper and run it out the bottom of my metal box, attach > >> >> > >> >> > >> > > >> > > >> > > >> >>a #12 piggy tail, and attach the other end through a hole on the > >> >>board. Kind of like the attached pic. Should work, eh? > >> >> > >> >>Brian > >> >> > >> >>Harold Bledsoe wrote: > >> >> > >> >> > >> >> > >> >>>One word to the wise on these: many PCBs are grounded through the > >> >>>screw holes. If you are using plastic standoffs, you may want to > >> >>>consider grounding the board some other way... > >> >>> > >> >>>-Hal > >> >>> > >> >>>-------------------------------------- > >> >>>Harold Bledsoe > >> >>>Deliberant Wireless > >> >>>http://www.deliberant.com <http://www.deliberant.com/> > >> >>> > >> >>>________________________________ > >> >>> > >> >>>From: [EMAIL PROTECTED] on behalf of Mark Nash > >> >>>Sent: Fri 8/25/2006 1:04 PM > >> >>>To: WISPA General List > >> >>>Subject: Re: [WISPA] Self Adhesive Mini PCB supports for Mikrotik > >> >>> > >> >>> > >> >>> > >> >>>I'll take some... Catch me offlist. > >> >>> > >> >>>Mark > >> >>>-----Original Message----- > >> >>>From: Brian Rohrbacher <[EMAIL PROTECTED]> > >> >>>Date: Fri, 25 Aug 2006 11:21:57 > >> >>>To:Conversations over a new WISP Trade Organization > >> >>><wireless@wispa.org>, [EMAIL PROTECTED] > >> >>>Subject: [WISPA] Self Adhesive Mini PCB supports for Mikrotik > >> >>> > >> >>> > >> >>> > >> >>> > >> > > >https://secure.microplastics.com/detail.asp?part=minilockpcbsupport&fam > > <https://secure.microplastics.com/detail.asp?part=minilockpcbsupport&fam> > >> = > >> >cbhardware > >> > > >> > > >> >>>They have them in stock now. I remember there was some talk about > >> >>> > >> >>> > >> >these > >> > > >> > > >> >>>a while ago. > >> >>>$50 min order so I just got 400 or so of the self adhesive PCB > >> >>> > >> >>> > >> >supports. > >> > > >> > > >> >>>I got the 5/8 standoff (should be able to fit the cards under the > >> >>>board too) > >> >>> > >> >>>I don't need 400, so if anyone wants a few, let me know. > >> >>> > >> >>>Otherwise, just letting ya'll know they are in stock. > >> >>> > >> >>>www.microplastics.com <http://www.microplastics.com/> > >> >>>-- > >> >>>WISPA Wireless List: wireless@wispa.org > >> >>> > >> >>>Subscribe/Unsubscribe: > >> >>>http://lists.wispa.org/mailman/listinfo/wireless > >> >>> > >> >>>Archives: http://lists.wispa.org/pipermail/wireless/ > >> >>>-- > >> >>>WISPA Wireless List: wireless@wispa.org > >> >>> > >> >>>Subscribe/Unsubscribe: > >> >>>http://lists.wispa.org/mailman/listinfo/wireless > >> >>> > >> >>>Archives: http://lists.wispa.org/pipermail/wireless/ > >> >>> > >> >>> > >> >>> > >> >>> > >> >>> > >> >>> > >> >> > >> >> > >> >----------------------------------------------------------------------- > >> - > >> > > >> > > >> > > >> > > >> > > >> > >> -- > >> WISPA Wireless List: wireless@wispa.org > >> > >> Subscribe/Unsubscribe: > >> http://lists.wispa.org/mailman/listinfo/wireless > >> > >> Archives: http://lists.wispa.org/pipermail/wireless/ > >> -- > >> WISPA Wireless List: wireless@wispa.org > >> > >> Subscribe/Unsubscribe: > >> http://lists.wispa.org/mailman/listinfo/wireless > >> > >> Archives: http://lists.wispa.org/pipermail/wireless/ > > *------- End of Original Message -------* > > > > -- > George Rogato > > Welcome to WISPA > > www.wispa.org > > http://signup.wispa.org/ > -- > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ ------- End of Original Message ------- |
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