I'd mount the radios about 6-10 meters below the candelabra to avoid any potential interference from the cell transmitters.
Oh, BTW, if you are really feeling paranoid (a good thing with AP installs), consider running 25-pair outdoor shielded cat 5 from the ground to an aluminum box up directly under the radios, then mount a second set of the Polyphaser T-1 and DC protectors in it and then feed the APs. That way, if the tower takes a hit and induces voltage on the cat5, you stand a better chance of surviving the hit. JH ----- Original Message ----- From: "Lancaster Networks" <[EMAIL PROTECTED]> To: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> Sent: Thursday, July 17, 2003 10:49 PM Subject: Re[5]: [smartBridges] New Firmware > Hello, > > Thanks for the help, I was told by a couple people, don't bother with > the poly's, as it's so close of a hit if the radio is 2 feet away it > will get nailed also. But, hey they are only $50 or less and not a lot > of loss. I'm not going to risk the AP's... > > Take a look at my site http://www.lancastertowers.com and look at the > tower on the right hand side... I'm considering mounting to the top > 10% but not right at the top possibly. Any thoughts on this? > > Thanks again for your input, and you sure moved a long way to the > Bahama's! No Amish down there I would gather? lol > > Friday, July 18, 2003, 1:33:07 AM, you wrote: > > jbc> Return-Path: <> > jbc> Received: from [66.150.163.162] (HELO m5) > jbc> by spamarrest.com (CommuniGate Pro SMTP 4.0.3) > jbc> with ESMTP id 10162053 for cbunting; Thu, 17 Jul 2003 22:35:36 -0700 > jbc> Received: from part-15.org ([198.63.203.3]) > jbc> by mail.fission2.com (Merak 5.9.4) with SMTP id CPA74271 > jbc> for <[EMAIL PROTECTED]>; Fri, 18 Jul 2003 01:34:15 -0400 > jbc> Received: from jazz [24.244.191.226] by pdqlink.com with ESMTP > jbc> (SMTPD32-4.07) id A86B19012A; Fri, 18 Jul 2003 00:40:59 CDT > jbc> Received: from jparr (helo=localhost) > jbc> by jazz with local-esmtp (Exim 3.35 #1 (Debian)) > jbc> id 19dNrg-0008MZ-00 > jbc> for <[EMAIL PROTECTED]>; Fri, 18 Jul 2003 01:33:08 -0400 > jbc> Date: Fri, 18 Jul 2003 01:33:07 -0400 (EDT) > jbc> From: [EMAIL PROTECTED] > jbc> X-X-Sender: [EMAIL PROTECTED] > jbc> To: Bill Flood <[EMAIL PROTECTED]> > jbc> In-Reply-To: <[EMAIL PROTECTED]> > jbc> Message-ID: <[EMAIL PROTECTED]> > jbc> MIME-Version: 1.0 > jbc> Content-Type: TEXT/PLAIN; charset=US-ASCII > jbc> X-Sender: Jeremy Parr <[EMAIL PROTECTED]> > jbc> Subject: Re[4]: [smartBridges] New Firmware > jbc> Precedence: bulk > jbc> Sender: [EMAIL PROTECTED] > jbc> Reply-To: [EMAIL PROTECTED] > > jbc> On Fri, 18 Jul 2003, Lancaster Networks wrote: > >> I need to provide them with a COMPLETE proposal of this whole thing, > >> and right now, this is what I am going to propose to them: > >> > >> (3) SmartBridges AirPoint Pro Outdoor @ $330.00 ea = $990.00 > >> (3) Maxrad 120 degree beamwidth antenna @ $407.52 ea = $1222.56 > >> (3) LMR-400 4ft jumper coax cable @ $24.00 ea = $72.00 > >> (3) Polyphaser 2.4ghz coaxial lightning protectors @ $35.66 ea = $106.98 > > jbc> Looks good. > > >> Has anyone needed to use polyphasers? We use them as a standard where > >> you have 100-300 foot hardline runs, but in this case, it's ethernet > >> cable. But I don't feel like climbing up the 300 foot tower to replace > >> a blown radio either. > > jbc> Polyphasers rock. But you know this already. Put a Coax protector on the N > jbc> connector at the radio, and run your antennas pigtail off of that. Be sure > jbc> to ground the polyphaser well. The SmartBridges use a plastic case, so you > jbc> can't ground em. Once the ethernet comes inside, put a Polyphaser IS-T1 > jbc> protector on the ethernet. They make a three port model, would be perfect > jbc> for you. Bear in mind you will need to protect the PoE seperately. The > jbc> IS-T1 only protects two pairs. (Or 2 pairs X 3 ports on the IS-3T1) > > >> This brings me to another point, are SB's products reliable enough > >> that I won't need to spend my entire life climbing the tower to fix > >> them or reflash them? > >> them? > > jbc> There are no serial ports on the units, and you can reset the > jbc> configuration from the power injector, so I don't see why you would need > jbc> to climb, except to replace the entire radio. My APs are all Cisco or > jbc> Trango, never used SmartBridges anywhere other than a CPE. Not sure if I > jbc> would trust them. > > >> I plan on mounting the antenna's with a bit of a downtilt, but all at > >> the top of the 300' tower, because I am looking for long-range > >> performance. Any methods for calculating downtilt that work good? I've > >> used my knowledge in the broadcast/radio industry to make my own > >> calculations, and with the use of ComStudy (an excellent program for > >> calculating RF propagation) > > jbc> YDI (www.ydi.com) has a number of javascript forms that will do all the > jbc> common calculations for you. Check em out. > > jbc> Jeremy > jbc> (Fromer Lancasterite) > > jbc> The PART-15.ORG smartBridges Discussion List > jbc> To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe smartBridges <yournickname> > jbc> To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe smartBridges) > jbc> Archives: http://archives.part-15.org > > The PART-15.ORG smartBridges Discussion List > To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe smartBridges <yournickname> > To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe smartBridges) > Archives: http://archives.part-15.org The PART-15.ORG smartBridges Discussion List To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe smartBridges <yournickname> To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe smartBridges) Archives: http://archives.part-15.org
