How much does it cost to make a Pringles can antenna? Given your labor cost at $6.25 / hour? How much does a comercially available antenna with equal or better performance cost? How long will a pringles can antenna work mounted on the roof in the weather? How long will a comparable comercially available antenna with equal or better perfoemance last in the elements? I like the Pringles thing, I have seen several successful projects but I have just wondered about the economics... Also It's tough to explain to a business customer why they should have alot of confidence in what appears to be trash.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Tom Carson Sent: Monday, September 30, 2002 9:15 PM To: [EMAIL PROTECTED] Subject: [BAWUG] Re: wireless digest, Vol 1 #1015 - 5 msgs Where can I find the design specs for the pringle's can antenna and how do I hook it up to the wireless NIC? Thanks, Tom ----- Original Message ----- From: [EMAIL PROTECTED] Date: Mon, 30 Sep 2002 12:00:01 -0700 To: [EMAIL PROTECTED] Subject: wireless digest, Vol 1 #1015 - 5 msgs > Send wireless mailing list submissions to > [EMAIL PROTECTED] > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.bawug.org/mailman/listinfo/wireless > or, via email, send a message with subject or body 'help' to > [EMAIL PROTECTED] > > You can reach the person managing the list at > [EMAIL PROTECTED] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of wireless digest..." > > > Today's Topics: > > 1. Return of the pringles can: potato chip strikes back (Ramesh Rao) > 2. Cisco Aironet 340 Firmware needed (Afaque Ahmed) > 3. RE: X10 and 802.11 (David T. Witkowski) > 4. Re: WAPs with built in router-firewall (Allen Fear) > 5. RE: WAPs with built in router-firewall (Nigel Ballard) > > --__--__-- > > Message: 1 > Date: Sun, 29 Sep 2002 12:23:43 -0700 > From: Ramesh Rao <[EMAIL PROTECTED]> > To: Marcus Wagner <[EMAIL PROTECTED]> > Cc: [EMAIL PROTECTED], [EMAIL PROTECTED] > Reply-to: [EMAIL PROTECTED] > Organization: San Francisco State University > Subject: [BAWUG] Return of the pringles can: potato chip strikes back > > > Return of the pringles can: potato chip strikes back > > http://news.yahoo.com/news?tmpl=story2&cid=562&ncid=738&e=7&u=/ap/20020929/a p_on_hi_te/wireless_security > > > > ............................................................................ ..... > > Agency Probes D.C. Wireless Network > Sun Sep 29, 1:37 PM ET > > By D. IAN HOPPER, AP Technology Writer > > WASHINGTON (AP) - Secret Service agents are putting a high-tech twist on > the idea of a cop walking the beat. Using a laptop computer and an antenna > fashioned from a Pringles potato chip can, they are looking for security > holes in > wireless networks in the nation's capital. > > The agency best known for protecting the president and chasing down > counterfeiters has started addressing what it calls one of the most > overlooked > threats to computer networks. > > "Everybody wants wireless, it's real convenient," Special Agent Wayne > Peterson said. "Security has always been an afterthought." > > .........and more in the article > ............................... > > > --__--__-- > > Message: 2 > Date: Sun, 29 Sep 2002 13:30:44 -0700 (PDT) > From: Afaque Ahmed <[EMAIL PROTECTED]> > To: [EMAIL PROTECTED] > Subject: [BAWUG] Cisco Aironet 340 Firmware needed > > Does anybody have the Cisco Aironet 340 Firmware > files? During the web download process from Cisco > website my power was disconnected, hence, my unit is > inoperable. > > However, I can access the file system from the serial > port. I believe all my firmware is ok except for a > config file, which resides in the config space of the > flash.... > > Does anybody have these individual files? > > Sincerely, > Afaque. > > > __________________________________________________ > Do you Yahoo!? > New DSL Internet Access from SBC & Yahoo! > http://sbc.yahoo.com > > --__--__-- > > Message: 3 > From: "David T. Witkowski" <[EMAIL PROTECTED]> > To: "'BAWUG'" <[EMAIL PROTECTED]> > Subject: RE: [BAWUG] X10 and 802.11 > Date: Sun, 29 Sep 2002 21:58:58 -0700 > > The problem occurs because 802.11b uses direct-sequence spread-spectrum > modulation. This technique (in theory) distributes the signal's energy > over a wide bandwidth to reduce or eliminate adjacent channel > interference. The reality is that DS spread 802.11b signals don't > usually interfere with each other--but they will interfere with the X-10 > video repeater. The amount of spreading is a function of the "spreading > code"; the longer the code the wider the spread. Please see Virginia > Tech's "Wireless FAQ" on spread-spectrum: > > http://www.cwt.vt.edu/faq/default.htm#sspec > > I have experimented with the same X-10/802.11b setup and found that even > using a spectrum analyzer to determine the frequency of the X-10 and > then setting the 802.11b gear as far away as possible did not resolve > the problem. > > It may be that the X-10 gear is simply not well-designed; perhaps a > better receiver front-end with better filtering would have helped. Then > again it may be that the DS spreading code is not long enough to > distribute the signal well, and the interference is truly in-band and > non-rejectable. > > In theory, a better video sender system (based perhaps on digital > modulation such as DS spread or FSK) would not be affected. I make no > claims that this is true, caveat emptor and all that. Your mileage may > vary. > > ...dtw > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]] On Behalf Of Fred Reinthaler > Sent: Friday, September 27, 2002 11:47 AM > To: BAWUG > Subject: [BAWUG] X10 and 802.11 > > > Hi, > > I have an "entertainment anywhere" from X10 consisting of a audio/video > transmitter and receiver using the 2.4Ghz frequency band. I am also > using > 802.11b NICs for my home network. The problem is that when using the > X10 > product for video, every few seconds, interference will occur. There > are > four different channels the X10 product can be set to (A,B,C or D) but i > have no idea to what 802.11 channel this corresponds to and i have tried > all > four but still am experiencing interference. > > Now since i am using a specific channel for my wireless network, once > the > association is made and a connection is established on a certain > channel, > should the NIC still be trying to scan on other channels? I get the > impression that's what XP might be doing so if that is the case, is > there a > way to change that behaviour? I will have to do some sniffing and > analyze > some packets in order to confirm this but i thought someone that might > have > had the same issue could maybe give me a quick answer. > > thanks, > > fred > > -- > general wireless list, a bawug thing <http://www.bawug.org/> > [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless > > > --__--__-- > > Message: 4 > Date: Mon, 30 Sep 2002 09:56:56 -0700 (PDT) > From: Allen Fear <[EMAIL PROTECTED]> > Subject: Re: [BAWUG] WAPs with built in router-firewall > To: Julian Bond <[EMAIL PROTECTED]>, [EMAIL PROTECTED] > > http://www.80211-planet.com/news/article/0,4000,1481_1471651,00.html > > With a device like this, does the ISP get to see > what's connected to your LAN? > > Allen > > --- Julian Bond <[EMAIL PROTECTED]> wrote: > > Julian Bond <[EMAIL PROTECTED]> wrote: > > >There are a number of WAPs appearing on the market > > now aimed at the > > >residential market > > > > >The reason I ask is that they appear to have a > > fairly comprehensive > > >packet filtering firewall built in. So it looks > > like it should be > > >possible to run a wide open WLAN but still apply > > enough rules to > > >adequately secure both the local LAN and trusted > > WLAN stations while > > >giving access to guests that still prevents the > > more dangerous > > >exploits. In other words, doing a lot of NoCat's > > job without needing a > > >Linux gateway. > > > > Which makes this particularly interesting. > > > http://www.80211-planet.com/news/article/0,4000,1481_1471651,00.html > > > > Cable modem, WAP, 4 port ethernet *and* "The > > router/gateway > > functionality also includes security: the > > VPN-1/FireWall-1 solution from > > Check Point Software Technologies, and Safe@, a > > software program by > > Check Point owned SofaWare." > > > > See also Draytek Vigor 2600/we All the above (more > > or less) but ADSL > > modem built in. > > http://www.draytek.co.uk/products/vigor2600.html > > > > -- > > Julian Bond Email&MSM: [EMAIL PROTECTED] > > Webmaster: http://www.ecademy.com/ > > Personal WebLog: http://www.voidstar.com/ > > CV/Resume: http://www.voidstar.com/cv/ > > M: +44 (0)77 5907 2173 T: +44 (0)192 0412 433 > > -- > > general wireless list, a bawug thing > > <http://www.bawug.org/> > > [un]subscribe: > http://lists.bawug.org/mailman/listinfo/wireless > > > __________________________________________________ > Do you Yahoo!? > New DSL Internet Access from SBC & Yahoo! > http://sbc.yahoo.com > > --__--__-- > > Message: 5 > Reply-To: <[EMAIL PROTECTED]> > From: "Nigel Ballard" <[EMAIL PROTECTED]> > To: "Allen Fear" <[EMAIL PROTECTED]>, > "Julian Bond" <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]> > Subject: RE: [BAWUG] WAPs with built in router-firewall > Date: Mon, 30 Sep 2002 11:17:19 -0700 > > If it supports UPnP then technically yes, if not, then no. > > Cheers Nigel > > Nigel Ballard > Joejava Wireless Consultancy > [EMAIL PROTECTED] > www.joejava.com > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of Allen Fear > Sent: Monday, September 30, 2002 9:57 AM > To: Julian Bond; [EMAIL PROTECTED] > Subject: Re: [BAWUG] WAPs with built in router-firewall > > > http://www.80211-planet.com/news/article/0,4000,1481_1471651,00.html > > With a device like this, does the ISP get to see > what's connected to your LAN? > > Allen > > --- Julian Bond <[EMAIL PROTECTED]> wrote: > > Julian Bond <[EMAIL PROTECTED]> wrote: > > >There are a number of WAPs appearing on the market > > now aimed at the > > >residential market > > > > >The reason I ask is that they appear to have a > > fairly comprehensive > > >packet filtering firewall built in. So it looks > > like it should be > > >possible to run a wide open WLAN but still apply > > enough rules to > > >adequately secure both the local LAN and trusted > > WLAN stations while > > >giving access to guests that still prevents the > > more dangerous > > >exploits. In other words, doing a lot of NoCat's > > job without needing a > > >Linux gateway. > > > > Which makes this particularly interesting. > > > http://www.80211-planet.com/news/article/0,4000,1481_1471651,00.html > > > > Cable modem, WAP, 4 port ethernet *and* "The > > router/gateway > > functionality also includes security: the > > VPN-1/FireWall-1 solution from > > Check Point Software Technologies, and Safe@, a > > software program by > > Check Point owned SofaWare." > > > > See also Draytek Vigor 2600/we All the above (more > > or less) but ADSL > > modem built in. > > http://www.draytek.co.uk/products/vigor2600.html > > > > -- > > Julian Bond Email&MSM: [EMAIL PROTECTED] > > Webmaster: http://www.ecademy.com/ > > Personal WebLog: http://www.voidstar.com/ > > CV/Resume: http://www.voidstar.com/cv/ > > M: +44 (0)77 5907 2173 T: +44 (0)192 0412 433 > > -- > > general wireless list, a bawug thing > > <http://www.bawug.org/> > > [un]subscribe: > http://lists.bawug.org/mailman/listinfo/wireless > > > __________________________________________________ > Do you Yahoo!? > New DSL Internet Access from SBC & Yahoo! > http://sbc.yahoo.com > -- > 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 > > End of wireless Digest > -- __________________________________________________________ Sign-up for your own FREE Personalized E-mail at Mail.com http://www.mail.com/?sr=signup -- 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
