On Tue, 15 Jul 2003, Patrick Leary wrote: > Your signal strength will often be better through the wall than a modern > window. Don't equate human concepts of resistance (i.e. glass is literally > easier for a human to go through than a fixed wall) to radio propagation > (glass often creates high reflectivity versus more porous wood, brick, etc. > Do remember that stucco over wire mess is a killer either way!
modern low-e glass typically has one to several metal glazes, and may also include metals in the glass batch to tune the color. I can imagine having four layers of vacum deposited tin having a negative impact on the performance of wireless antennas. > - Patrick > > -----Original Message----- > From: Ian Emmons [mailto:[EMAIL PROTECTED] > Sent: Tuesday, July 15, 2003 4:03 PM > To: [EMAIL PROTECTED] > Subject: RE: [BAWUG] Wap11 range problem (LOS obstructions & fresnel > zone) > > > Also many of the newer windows have energy saving glazes/coatings that cause > more problems than leaded glass > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > On Behalf Of gba > Sent: Tuesday, July 15, 2003 12:54 PM > To: Stefan Schueller > Cc: Peter Bellew; Brian Taylor; [EMAIL PROTECTED] > Subject: Re: [BAWUG] Wap11 range problem (LOS obstructions & fresnel zone) > > > on the window tip: > do you live in an older house stefan? i believe what would cause this loss > is > that there is lead in the glass used in older homes' window panes. you can > typicaly tell by the yellowing of the glass. > > but, it could be something completely different. > > -xs > > -- > Greg Borie al'Brecht <[EMAIL PROTECTED]> > AM Breaks * www.ambreaks.com > West-Coast BreakBeat Movement > -- > "Buy the ticket, take the ride." -Dr. H.S.T > > > > > Quoting Stefan Schueller <[EMAIL PROTECTED]>: > > > Also make sure you don't try doing this through the window as certain > > types of windows block the signal. > > > > I noticed that placing the antenna right at my windows causes all the > > signal to get lost. Moving back a couple of feet it gets better. > > > > -Stefan > > http://www.hartwellroad.net > > > > ----- Original Message ----- > > From: "Peter Bellew" <[EMAIL PROTECTED]> > > To: "Brian Taylor" <[EMAIL PROTECTED]>; > > <[EMAIL PROTECTED]> > > Sent: Tuesday, July 15, 2003 08:36 > > Subject: Re: [BAWUG] Wap11 range problem (LOS obstructions & fresnel zone) > > > > > > > The ROR units are a great choice as they have the Karlnet software > > > which > > is > > > diff to hack and is far more robust than any regular solution like > > > the SmartBridges 802.11b stuff. The ROR units work at 2.4ghz but > > > are not 802.11b compliant. > > > > > > > > > Best regards > > > > > > Peter Bellew, CEO > > > Visitor Based Networks > > > Kerry Technology Park, Tralee. > > > Co. Kerry. Ireland > > > Tel: +353-66-7190089 > > > http://www.vbnets.com > > > ----- Original Message ----- > > > From: "Brian Taylor" <[EMAIL PROTECTED]> > > > To: <[EMAIL PROTECTED]> > > > Sent: Tuesday, July 15, 2003 12:53 PM > > > Subject: Re: [BAWUG] Wap11 range problem (LOS obstructions & fresnel > > > zone) > > > > > > > > > > This is just my personal experience, and pretty limited experience > > > > at > > > that. > > > > > > > > I have attempted 2 wireless bridge connections with 2 sets of > > > > WAP11's, > > > one > > > > link was 10 miles and the other was 3 blocks. Neither link worked > > > > at > > all > > > > with the 2.6 WAP11's. In my personal opinion they are garbage. > > > > Both > > > links > > > > "worked" with the 2.2's. but they were slow, as in about 20KB/s > > > > slow. > > > > > > > > I did get both links to work. On the 10 mile link I used a > > > > SmartBridges AirPoint PRO Outdoor and an AirBridge Outdoor. The > > > > combo works > > perfectly > > > at > > > > a cost of about $650 for equipment. The speed is also excellent > > > > and > > > varies > > > > between 450-550KB/s. The only problem is the SmartBridge > > > > equipment > > > appears > > > > to be in very high demand because it is hard to find anyone with > > > > them in stock. > > > > > > > > The 3 block link I used Hyperlink Technologies H-ROR's and they > > > > also > > work > > > > very very well and support a ton of excellent routing options. > > > > The > > speed > > > > wasn't as good as the SmartBridge stuff, but it was still decent > > > (350KB/s). > > > > Hyperlink has these in stock pretty much all the time, but they > > > > run > > about > > > > $900 for the pair. > > > > > > > > Again, this is just my personal experience. I have seen the > > > > stories > > with > > > > WAP11's going 20 miles, but in my experience with both the 2.2's > > > > and the 2.6's it just doesn't work very well and all it did was > > > > add $180 to the > > > cost > > > > of both my projects. At least the WAP11's stack nicely on top of > > > > each > > > other > > > > so they don't take up that much room in my office. > > > > > > > > Brian Taylor > > > > Technology Coordinator > > > > Waconda USD #272 785-781-4328 > > > > > > > > ----- Original Message ----- > > > > From: <[EMAIL PROTECTED]> > > > > To: <[EMAIL PROTECTED]> > > > > Sent: Monday, July 14, 2003 4:05 PM > > > > Subject: [BAWUG] Wap11 range problem (LOS obstructions & fresnel > > > > zone) > > > > > > > > > > > > > Hi. I just entered working in a new company and they have asked > > > > > me to > > > set > > > > > up a wireless link between two points, 800 mts away from each > > > > > other > > > (about > > > > > 2400 fts). > > > > > > > > > > We have 2 wap11 version 2.6, 1 VAGI 16 dbi antenna and 1 12 dbi > > > > > pacwireless omni antenna with pigtails. They're all from > > > www.fab-corp.com. > > > > > > > > > > I'm new in this wlan world. All this equipment was bougth by the > > > > > last engineer who left the company a few days ago. I've made > > > > > some tests but they haven't worked at all..They work perfect > > > > > indoors and even interoperate with other Planet wap1960 AP we > > > > > have. We tried to make > > them > > > > > work in a 500 mts (1500 fts) link from the window of a 4 stories > > > building > > > > > and the roof of a 13 stories building. The antenna says it has > > > > > "3 dg electrical down tilt". > > > > > > > > > > My questions are: > > > > > > > > > > I'm not sure why it does not work. i live in Cali, Colombia and > > > > > we > > don't > > > > > have too many 2.4 ghz, microwave devices or simmilar in this > > > > > area.I > > see > > > > > some trees a about 40 mts from one point. I read that about 60% > > > > > of the first Fresnel zone should be without obstructions to have > > > > > a link. Is > > > there > > > > > a way to easily calculate the width of this fresnel zone ? I'm > > > > > about > > to > > > > > perform other tests in other environment so i would like to know > > > > > how > > to > > > > > know the maximum distance an obstruction could be from the LOS. > > > > > > > > > > I 've read almost all the posts in this lists about wap11. Many > > > > > people > > > say > > > > > they're very bad in long ranges. But why there are some guys > > > > > with 8000 > > > mts > > > > > and even 26 miles (in maui) with wap11 and no big problems ? I > > > > > see > > that > > > > > the most of the "bad" posts are from 2001 and 2002 when there > > > > > wasn't version 2.2 nor 2.6 yet. I tried only ap and ap-client > > > > > modes. What's > > the > > > > > exact difference between a link this way and a bridge link ? > > > > > (besides having the ap<->ap-client mode with cappablity for > > > > > accepting other wireless clients). > > > > > > > > > > Unfortunately we can't return them. It's southamerica and the > > > > > shipping > > > is > > > > > about twice the price. I need to make them work. > > > > > > > > > > I'm really new in this. I would appreciate any help, suggestion, > > > > > and comments about this problem. > > > > > > > > > > P.S.: The VAGI antennas (from pacwireless) say they have > > > > > vertical and horizontal polarization depending on the way you > > > > > grab it. The omni > > > antenna > > > > > say something like that. What is it ? thanks for any info. > > > > > > > > > > Julian > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > > general wireless list, a bawug thing <http://www.bawug.org/> > > > > > [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless > > > > > > > > > > > > > -- > > > > general wireless list, a bawug thing <http://www.bawug.org/> > > > > [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless > > > > > > > > > > -- > > > general wireless list, a bawug thing <http://www.bawug.org/> > > > [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless > > > > -- > > general wireless list, a bawug thing <http://www.bawug.org/> > > [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless > > > > > > -- > general wireless list, a bawug thing <http://www.bawug.org/> > [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless > > -- > general wireless list, a bawug thing <http://www.bawug.org/> > [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless > > > This mail passed through mail.alvarion.com > > **************************************************************************** > ******** > This footnote confirms that this email message has been scanned by > PineApp Mail-SeCure for the presence of malicious code, vandals & computer > viruses. > **************************************************************************** > ******** > -- > general wireless list, a bawug thing <http://www.bawug.org/> > [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless > -- -------------------------------------------------------------------------- Joel Jaeggli Academic User Services [EMAIL PROTECTED] -- PGP Key Fingerprint: 1DE9 8FCA 51FB 4195 B42A 9C32 A30D 121E -- In Dr. Johnson's famous dictionary patriotism is defined as the last resort of the scoundrel. With all due respect to an enlightened but inferior lexicographer I beg to submit that it is the first. -- Ambrose Bierce, "The Devil's Dictionary" -- general wireless list, a bawug thing <http://www.bawug.org/> [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless
