They evidently don't understand how they work. Will your antenna get blown to bits if it gets hit yes. But the way the arrestor works is that there is a filament inside that lets RF through but not electricity. So if a tower gets struck, or near by your antenna the stray voltages will not go through your access point messing it up. I have been on a AM tower during a lightning storm (not one of my brighter moments, it came up fast) anyway I did not get shocked because AM towers are not grounded and the tower did not take a direct hit but every time the lightning would strike in the clouds above the tower blue sparks would fly on every piece of equipment on that tower, even with no direct hit. It was kind of cool, but kind of not. After all I was 300ft up. Anyway those stray voltages could play hell with the equipment without lightning arrestors. Jason
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Lancaster Networks Sent: Friday, July 18, 2003 12:50 AM To: [EMAIL PROTECTED] 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
