Re: [BAWUG] WAP/Bridge Recommendation?

isco. I don't work there any longer, but I'm still very satisfied with their gear. I hope this helps! Greg DesBrisay [EMAIL PROTECTED] On Sat, 2003-01-11 at 14:23, Gus Welter wrote: > At this big house where we're installing the WLAN, we've decided to go > with someb

Re: [BAWUG] got coax?

k in SF on Tuesday. Greg DesBrisay [EMAIL PROTECTED] 650 281 8396 (m) On Mon, 2003-01-13 at 13:47, Sean Wolfe wrote: > Folks, new to the list, new to the area. I am looking for somebody with coax > crimping tools to help me put the right connector on an antenna patch cable. > I can offer h

Re: [BAWUG] MMDS Gardiner

uld require the use of a network analyzer to tell you when you've added the proper amount of wire! Regards, Greg DesBrisay [EMAIL PROTECTED] On Wed, 2003-01-15 at 18:08, Milla Yegurku wrote: > Hi > > I cut open the plastic cover off of a "Gardiner MMDs > downconverte

Re: [BAWUG] MMDS Gardiner

unit you're working with. Basically, regardless of what you use to feed a parabolic reflector, you want the feed to sit at the focus of the parabola. It turns out that dipoles, or even Yagi antennas, are very cost effective ways of feeding parabolic reflectors. I've seen them used as high as 5.8

Re: [BAWUG] Anyone here used a GPS to position antennas?

ements you get along with a topographic map (or topo-map software like Topo-USA from Delorme--cheap and good in my experience) to figure out if you've got enough clearance over hills, etc.. (It takes a bit more work to account for the height of buildings or trees along the path.) Regards, Greg D

Re: [BAWUG] Anyone here used a GPS to position antennas?

On Mon, 2003-01-20 at 15:04, Tim Pozar wrote: > On Sun, Jan 19, 2003 at 11:49:01PM -0800, Greg DesBrisay wrote: > > Sure, I do this all the time. > > GPS units work great (as long as you're outdoors and you're not > > surrounded by too many tall buildings). >

Re: [BAWUG] Anyone here used a GPS to position antennas?

on to make the ends of the link more visible. Good luck! Greg DesBrisay On Mon, 2003-01-20 at 08:21, Xparent wrote: > Thanks Greg, > I only have a one mile link. Clear line of sight, > but my tech tells me that they have problems seeing > where the other location is exactly. I t

Re: [BAWUG] Re: Suggestion for users' friendlier MessagesList/s.....

Something like what you're asking for already exists in the form of the archives for this list at http://lists.bawug.org/pipermail/wireless/ . Will that solve your problem? Greg On Mon, 2003-01-20 at 21:11, d* Lin wrote: > Can BAWUG makes "a day's transmission" more friendlier > & more manag

Re: [BAWUG] Re: Previous posting of having a users-friendlyinbound BawugLists...

Interesting. This url worked for me just a couple minutes ago! Alternatively, go to www.bawug.org, click on "Communicate", and then click on "wireless" under "Archives" near the bottom of the page. Regards, Greg DesBrisay > -As for the URL sugges

Re: [BAWUG] RE: Looking to extend 802.11b network

Don't repeaters have to be on the same frequency as the signals they are repeating? Greg On Wed, 2003-01-22 at 06:36, [EMAIL PROTECTED] wrote: > Also you would want to run different channels 1 - 6 - 11 - 1 - 6 - 11 the > further out you go. -- general wireless list, a bawug thing

Re: SV: [BAWUG] RE: Looking to extend 802.11b network

ange between channel 1 and 6 when you move past them > > /Freddy > > > > -Oprindelig meddelelse- > Fra: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]På vegne af Greg DesBrisay > Sendt: 22. januar 2003 19:26 > Til: [EMAIL PROTECTED] > Cc: [EMAIL PROTECTED] >

Re: [BAWUG] Recommended Spectrum analyzer

ting. See www.xlmicrowave.com for details. Regards, Greg DesBrisay [EMAIL PROTECTED] On Tue, 2003-01-21 at 10:01, [EMAIL PROTECTED] wrote: > Does anyone recommend a good (portable) microwave spectrum analyser for 802.11a and >b that can provide realistic measurements of noise for tro

Re: [BAWUG] beam clamps for 80211 antennas

Unistrut has a bunch of fittings to bolt round pipe-like objects to their beams. Check out the Unitstrut web site for details. Greg DesBrisay [EMAIL PROTECTED] N6GD On Tue, 2003-02-04 at 15:48, Sean Wolfe wrote: > Anybody have an idea where I might find mounting solutions to mount an o

Re: [BAWUG] LEAP technology discussion

ll comments from its recent WG Ballot. The standard will now be forwarded for a second WG Ballot. Once approved, it will significantly enhance the security of IEEE 802.11 wireless LANs through new encryption and authentication methods." Regards, Greg DesBrisay On Wed, 2003-02-12 at 13:07,

Re: [BAWUG] Antenna Connectors

r reliability and ease of installation. You can also buy the crimp connectors directly from Times Microwave, but I don't recall if there's a minimum order required. Cheers, Greg DesBrisay [EMAIL PROTECTED] N6GD On Thu, 2003-02-13 at 14:26, Steve Rubin wrote: > On Thu, Feb 13, 2003

Re: [BAWUG] RE: Contents of wIreless digest, Vol 1 #69 - 10 msgs

and Electronic Engineers). I'm not an employee of the IEEE and don't speak for them. I just pay my dues, attend meetings, and occasionally speak _at_ them. 78^) ) Thanks for letting us know. I, for one, appreciate it! Cheers, Greg DesBrisay On Thu, 2003-02-13 at 11:16, [EMAIL PROT

Re: [BAWUG] 2 Cisco 350 Quickies

Cisco APs can't act as bridges, but one can be set to be a repeater for the other "root" AP. That might do what you're looking for. Max. throughput will be half of the max. throughput of a single NIC-to-AP link. On Mon, 2003-03-10 at 17:16, Moebius wrote: > > > 1. I have 2 Cisco 350 AP's a

Re: [BAWUG] trillian and wifi...

Don't know anything about trillian, except that it's an IM program, and from the web site says it let's one download all sorts of news, etc.. One possible cause of the symptoms you're seeing could be especially heavy data traffic. Is trillian downloading or uploading a bunch of data? Is some

Re: [BAWUG] FW: Netstumbling - FBI response

uh, I sort of follow your argument, but when you diverge to copyright law, you're quite wrong. Copyright case law is well established, and it says that the author has a copyright to _any_ material that author creates, regardless of whether the material was marked with a copyright notice.

Re: OT: Copyright (was Re: [BAWUG] FW: Netstumbling - FBI response)

Thanks for the great URL! Greg > http://www.copyright.gov/faq.html#q13 > > et seq. > > Cheers, > -- jra > -- > Jay R. Ashworth -- general wireless list, a bawug thing [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless

Re: [BAWUG] Newbie question about SDR

chives of the [EMAIL PROTECTED] list.) Regards, Greg DesBrisay On Sun, 2003-06-08 at 06:08, Russell Nelson wrote: > Douglass Turner writes: > > I'm starting to get up to speed on SDR and had a question about the extent > > to which a given SDR device can morph chameleon li

RE: [BAWUG] Beacon interval on Cisco BR350

If you're just using the gear for a building-to-building link, then turn the beacons off alltogether. There's no sense in advertising the presence of your link more than necessary! Regards, Greg On Mon, 2003-06-09 at 12:28, Westman, Michael (324) wrote: > That's exactly what I was looking fo

Re: Subject: Re: [BAWUG] two antennas, one mast?

d getting stuck listening to the antenna ports that weren't connected to antennas! (I'm also theorizing that since antennas are tuned circuits they won't radiate or receive as much of the low-level off-frequency spurious emissions, so the problem goes away if proper antennas are connected.)

Re: Subject: Re: [BAWUG] two antennas, one mast?

Communications between Cisco APs for the handoff protocol happens over the wired Ethernet, not over the air. However, newer APs are supposed to detect rogue APs in some way, don't know the details of that protocol. Does anyone else here know? Greg DesBrisay On Wed, 2003-06-25 at

Re: [BAWUG] two antennas, one mast?

Right on Dan! Seems to me that many WISP operators neglect this fact when deploying multi-sector sites. They probably don't notice a problem most of the time because the channels are lightly loaded, but I bet they'd run into throughput problems if two of more sectors are heavily loa

Re: [BAWUG] books block wifi??

eems to me that some similar approach could be used in a library. Combine that with a few extra APs acting as repeaters and you ought to be able to cover any imaginable pattern of library stacks. Hmmm. Greg DesBrisay On Mon, 2003-06-23 at 23:56, S Woodside wrote: > http://famulus.msnbc.c

RE: [BAWUG] BroadBand in Car

e as small as a microcell or as large as 29 km" Disclaimer, I am not an employee of IPWireless, but I do some contract work them and have been favorably impressed with their product! Regards, Greg DesBrisay On Tue, 2003-07-01 at 09:29, Moebius wrote: > Alvarion has a mobile pr

Re: [BAWUG] Wireless Structure

Ulisses, I'm pretty sure that Cisco access points cannot act as bridges in the way you've drawn them. On the other hand, Cisco bridges (e.g. BR340, BR350) are designed specifically for this sort of network application. Regards, Greg DesBrisay [EMAIL PROTECTED] On Thu, 2003-07-1

Re: [BAWUG] weather proof enclosures

Hoffman makes very good outdoor enclosures (www.hoffmanonline.com). They've been in the business for a very long time and a have a wide range of good products. Greg DesBrisay [EMAIL PROTECTED] On Mon, 2003-07-14 at 11:03, Scott Douglass wrote: > Can anyone give me good sources for

Re: [BAWUG] Cables to fit MA311 card?

Sounds like an MMCX connector. You can find drawings of MMCX connectors at http://www.amphenolrf.com/products/mmcx.asp . I hope this helps! Greg DesBrisay On Tue, 2003-07-22 at 16:42, j debert wrote: > Marc Guldimann wrote: > > >Those take RP-SMA connectors: > >http:/

RE: [BAWUG] 802.11b Long Range non line of sight

my general answer. Criticisms from others about 802.11a on this list don't seem to be related to OFDM, they seem to be related to other issues of receiver and transmitter design. I hope this helps! Greg DesBrisay [EMAIL PROTECTED] On Thu, 2003-07-24 at 14:26, Ladjicke Diouf wrote: >

RE: [BAWUG] 802.11b Long Range non line of sight

. Regards, Greg On Thu, 2003-07-24 at 23:00, Greg DesBrisay wrote: > > > Ladjicke, > > OFDM is essentially a multi-tone modulation, with some tricks thrown in > that allows the tones to be closer together than traditional multi-tone > systems. Imagine a 256-tone OFDM

RE: [BAWUG] 802.11b Long Range non line of sight

Jim, I specifically said this was a non-802.11a system. The power was higher than 200 mW. Greg On Fri, 2003-07-25 at 00:14, Jim Thompson wrote: > > For F in MHz and D in miles, free space path loss = 36.6 + 20 * log(D) + 20 * log(F) > > for 2.4GHz and 10 miles, the free space path loss is

RE: [BAWUG] 802.11b Long Range non line of sight

for non-LOS paths is usually much longer than for LOS paths. In other words, if you have a strong signal you usually get to ignore most of the multipath, but if all you have is weak multipath, you have to pay more attention to the multipath! Think about it. Greg On Thu, 2003-07-24 at 23:

RE: [BAWUG] 802.11b Long Range non line of sight

n" from 2-antenna diversity. > Not even MRC will generate *14dB* of gain over 2-antennas. > > What has BAWUG become, "hawk our proprietary warze?" Geez. > > Jim > > Greg DesBrisay writes: > > > > P.S. > > For more detail on OFDM and fi

[Fwd: RE: [BAWUG] 802.11b Long Range non line of sight]

-Forwarded Message- From: Greg DesBrisay <[EMAIL PROTECTED]> To: Jim Thompson <[EMAIL PROTECTED]> Subject: RE: [BAWUG] 802.11b Long Range non line of sight Date: 25 Jul 2003 08:46:02 -0700 Jim, Love your language. Yes, the system I'm referring to is the old Clarit

RE: [BAWUG] 802.11b Long Range non line of sight

Oops! I responded too quickly to this message! You were responding to Casey Halverson's posting, not mine. Apologies, Greg On Fri, 2003-07-25 at 08:40, Greg DesBrisay wrote: > > > Jim, > > I specifically said this was a non-802.11a system. > The power was higher

Re: [BAWUG] Signal strength and signal quality?

I think the signal-quality indication is based upon the packet error rate. (You ought to be able to verify this by looking at the CRC-error counters.) You could have a great signal, but still get lots of errors if you have high noise or interference, or if something is wrong with the receiver

RE: [BAWUG] 802.11b Long Range non line of sight

niques > such as MRC, the average received SNR can be increased by 10*log10(M), > where M is the number of (receive) antennas. > > > Greg DesBrisay writes: > > > > Jim, > > > > Thanks for taking the time to look at the presentation! It nice to know >

RE: [BAWUG] 802.11b Long Range non line of sight

gned for outdoor use (European HDTV, the Cisco Clarity gear, Alvarion, etc., etc., etc.) Btw, the Cisco Clarity gear was designed for the outdoor environment from the get-go and handled multipath delay spread up to 8 ms. Regards, Greg DesBrisay On Thu, 2003-07-31 at 12:24, Jeff King wrote: >

Re: [Fwd: RE: [BAWUG] 802.11b Long Range non line of sight]

Jim, There are at least 40 things that have to go right for a new business to be successful. As an engineer I find it disheartening that only four or five of them have to do with technology! Perhaps the equipment worked great and the business plan didn't? Greg On Wed, 2003-07-30 at 03:58,

RE: [BAWUG] 802.11b Long Range non line of sight

Jim, You're absolutely correct. Most technologies have trade-offs. OFDM deals well with delay spread up to the limit of the cyclic prefix and then it fails due to ISI. Outdoor propagation envirnments encounter delay spreads of several milliseconds, up to a realistic maximum of 10 ms [ref. pa

Re: [BAWUG] Cisco, Clarity, and lack of sales

Dan, I certainly won't defend the business decisions that were made by the Clarity/Cisco leadership, and I'm really reluctant to challenge you since you were very nice to take me to lunch today (thanks!), but I've got a couple of nits to pick about your points! > 1] Cisco in those days was ar

RE: [BAWUG] 802.11b Long Range non line of sight

10 dB for spatial diversity. additional decibels for frequency diversity. On Fri, 2003-08-01 at 08:44, Jim Thompson wrote: > > Sure, but someone said "14dB". > > Greg DesBrisay writes: > > > > > > Yup. So we agree! > > > > Greg >

Re: [BAWUG] Cisco, Clarity, and lack of sales

The base station gear used a 7246VXR router. It's an RF-hardened version of the 7206VXR router, and it's the same router that's used for Cisco's cable headend gear. Greg On Fri, 2003-08-01 at 14:37, Joel Jaeggli wrote: > On Fri, 1 Aug 2003, Richard Bennett wrote: > > > On 31 Jul 2003 at 23:55

Re: [BAWUG] Can a Cisco Aironet 350 Access Point operate in bridgemode?

No (but a Cisco Aironet 350 Bridge can be used as an access point!). On Thu, 2003-08-21 at 17:36, Loren Zemenick wrote: > Does anyone know if the AP can be used in bridge mode? > I have a Cisco Aironet 350 (model AIR-AP352E2R-A-K9) and want to connect two > LANs with a wireless link. Can it be u

Re: [BAWUG] Mobile Mounting of Roof-Grade Antennae

license plate and provides a place to bolt a mast. This type of bracket is nice because you don't have to drill holes in the body of the car, but it requires a car that has a solid method of mounting license plates. This sort of bracket should be pretty easy to build yourself if you can't f

Re: [BAWUG] Wardriving Senao vs. Cisco

Guess what "BNC" stands for. "Bayonetted N Connector"! Greg On Mon, 2003-09-29 at 15:30, Cliff Skolnick wrote: > Actually there is an old ham radio trick that you can plug an N > connector onto a BNC connector, it will just push on and the center pin > and inner shield will make contact. >

Re: [BAWUG] Wardriving Senao vs. Cisco

Yes, that's a problem. An antenna designed for the 1.9-GHz PCS band is unlikely to be useful at 2.4 GHz (with rare exceptions). Greg On Tue, 2003-09-30 at 08:44, Jay R. Ashworth wrote: > On Mon, Sep 29, 2003 at 07:17:12PM -0400, Brian Lloyd wrote: > > > Ok. I wasn't sure I could get away wit

RE: [BAWUG] Wardriving Senao vs. Cisco

Thanks Matthew! An old antenna expert I used to work with told that to me one time and I'd since forgotten the name. He was a professor of electrical engineering and wrote a good book on antennas way back in the 1930s, so I trust that his version of the story is accurate since he was active in th

Re: [BAWUG] Wirelessless

Did you connect the antenna cable? 78^) Greg On Mon, 2003-10-20 at 11:56, John Abbe wrote: > Just installed an AirPort card in my PowerBook Pismo (running OS > X 10.1.5). I don't have a hub. I tried Golden Gate Perk in SF, then > upgraded with the CD (AirPort Setup Assistant now is 2.0.8) a

Re: [BAWUG] wireless tidal outages over water

Nice data! I think you're on the right track. The data surely shows a correlation between tide height and outages! Multipath can definitely be a problem over water. What polarization are you using for the antennas? Countermeasures can include (1) using horizontal polarization instead of verti

Re: [BAWUG] wireless tidal outages over water

ow > the link margin to begin with. It sounds like it is just a 1megabit link on the > peaks, hence I'm suspecting we have a poor link margin to begin with. > The "quick solution" may be as simple as replacing the WAP11's with some > AP's/clients with hotter rec

Re: [BAWUG] Trouble building a cantenna

I hope this helps! Greg DesBrisay On Tue, 2003-11-11 at 10:58, [EMAIL PROTECTED] wrote: > Hi, > > I am trying to build an antenna by following the directions on > http://www.turnpoint.net/wireless/cantennahowto.html . I am using a > Linksys WUSB11 v2.5 (the one with an M

Re: [BAWUG] Sears Van

I've seen those equipment pods on the top of Sears vans as well, but I figured they were OmniTracs units (a satellite-based vehicle tracking system, see www.omnitracs.com). Can't say for sure, but I'm guessing the 802.11 gear is somewhere inside the van. Anyone here know for sure what an Omni

Re: [BAWUG] ANNOUNCEMENT: BAWUG Wiki page is now operating, drop on by. & Can someone set up a wiki on bawug.org?

Hereon, I'm a newbie to wiki pages, so naturally I have a question! There's a "LOGIN" button on the page when one edits a page. What's the "LOGIN" button for, and if we need to know it, what's the login name and password? Greg On Thu, 2003-11-27 at 18:15, Hereon wrote: > I just set up a BA

Re: [BAWUG] Attaching N connectors to a PAWDC-24 24dBi parabolic antenna

sure to get the EZ-style connectors from Times Microwave with the captive center pins (e.g. EZ-240-NM)! These will save you hours of effort and will give you a far more reliable connector to boot. Greg DesBrisay On Fri, 2003-10-24 at 17:47, Leigh L. Klotz, Jr. wrote: > I'm looking for

Re: stupid tx power tricks (was Fw: [BAWUG] bridging help)

As Brian pointed out, if the transmitter power is changed to exceed the type certification, then the the change is illegal. Regardless of whether emissions comply with the other rules. This is true in the United States and in Europe. I suspect it's true in most other countries as well. Greg

Re: [BAWUG] UT-141 Cable

There are a number of folks selling UT-141 on EBay at pretty nice prices! Search for "UT-141". Regards, Greg On Sat, 2004-01-31 at 03:38, Max Lansing wrote: > hey you various wireless enthusiasts, > > I've got this DirecTV dish which I've been feeding with a big long and sloppy > cantenna.

Re: [BAWUG] Is there AP that is also repeater at the same time?

I have Cisco APs running successfully and reliably in repeater mode. Multiple hops are supported, although throughput drops roughly in half for each hop, of course. Regards, Greg -- general wireless list, a bawug thing [un]subscribe: http://lists.bawug.org/mailman/list

Re: [BAWUG] where to find Rohn non-penetrating roof mounts or similar mounts

Try calling Rohn for distributor info; or try Tessco, Talley Communications, or Hutton. Regards, Greg On Thu, 2004-08-26 at 10:32, CTCNet INFO wrote: > > We've used some FRM125 non-penetrating roof mounts made by Rohn: > http://www.rohnnet.net/rohnnet2001/catalog/menu/main.html > > There'

Re: [BAWUG] IFR shop in the SF Bay Area?

Apparently IFR is now owned by Aeroflex. The Aeroflex web site at http://www.aeroflex.com/support/service/usservice.cfm indicates that their only service center for North America is in Wichita, KS. I hope this helps! Greg On Wed, 2005-01-05 at 16:00, [EMAIL PROTECTED] wrote: > I've got an I

Re: [BAWUG] Re: Repeater compatibility -- was: WET11, meta issue

Note: this applies to Cisco Aironet gear, not Cisco Linksys gear. Sorry, I don't have the answer to your question regarding Linksys gear off the top of my head, Although I'm sure a little digging on the Linksys site will get you the answer. I recall that the user manuals for all the Linksy

Re: [BAWUG] Disappointing range

Hi Kris, Assuming there's no downtilt to the antenna pattern, don't forget to divide the 8-degree beamwidth in half before you do your calculation! ( tan(4 deg) = 30 ft/(distance to intersection with ground, ft) => distance to intersection with ground (ft) = 30 ft/tan(4 deg) = 429 ft. So perhap