free2air - Open Distributed Public Network Infrastructure free2air proudly hosts / provisions

ambient tv offices

newsfilter - blog blog blog raylab

over wireless public access networks


Front Page Forums News Everything OpenNAP Diaries
Projects : Toy Satellite East End Net Air Shadow Wireless Ant Farm

GZ - the story of groundzero

free2air
By vortex, Section News
Posted on Sun Feb 10th, 2002 at 11:59:03 GMT
Since late December 2000, groundzero has been offering open wireless access to the local area around Bethnal Green in the East End of London.

To the best of our knowledge, groundzero is the oldest, most stable & reliable public wireless access point in London, if not the UK. Actually we think it may be the longest running such gateway in Europe (email us if you can prove otherwise).

Subscribe to the east-end-net mailing list to participate and to stay informed of up to date London East End wireless network developments.

 

Host: groundzero.free2air.net

The host is a PII laptop running Red Hat Linux 7.2 with patches. It's primary function is to act as a wireless gateway and support ancillary services such as authentication, IP forwarding & tunnelling, firewalling, and experimental dynamic routing. It is currently also running:
Apache;
mod_perl;
mysql;
scoop;
BIND 9;
DHCPD 3;
Net SNMPD;
PoPToP, L2TPD, and FreeSWAN (for peering with other wireless and wired connections);

Wireless Card

An Orinoco Silver 802.11b PCMCIA card is used to provide the wireless gateway. This brand and model of card was chosen for a number of reasons including the ability to connect it to an external antenna as well as the wide driver support at the time for all Linux, *BSD's, and MS OS's. Have a quick dirty peek at naked pictures of inside the card - Orinoco Card (Top) and Orinoco Card (Bottom) (card picture credits).

Connectors & Cabling

The Orinoco Silver card has a connector for an external antenna, which connects to a pigtail connector, which in turn is connected to a lightning protector, followed by 50 feet of LMR400 coaxial cable.

Antenna

At the far end of the coaxial cable is an Hyperlink Technologies Omnidirectional 16dBi antenna is used to serve the local area.

Initially this antenna was mounted on a heavyweight industrial tripod free standing but ballasted on a street facing balcony (above a shop). If you are considering a similar setup, consider the results of very strong wind and ballast the tripod used to mount the antenna.

After positioning and testing, the antenna was moved to a rooftop chimney mount on a 2 metre mast rising above a very firmly mounted TV mast.

Client Connections

Zoo was connected permanently to groundzero in February 2001. You can read about the history of newsfilter in another posting. Other current connected friends include the sweet crew from Ambient TV, and the Mute magazine supported, grant funded youarehere project.

The current (but quite incomplete) groundzero client connection history records a reasonable number of incidental and semi-permanent wireless associations.

< Spray On 'Graffitti'-style Wireless LAN Antenna (4 comments) | air shadow (3 comments) >

Menu
submit story
create account
faq
search
donate

Login
Make a new account
Username:
Password:

Related Links
Kuro5hin
Scoop
email us
east-end-net mailing list
Red Hat Linux 7.2
Apache
mod_perl
mysql
scoop
BIND 9
DHCPD 3
Net SNMPD
PoPToP
L2TPD
FreeSWAN
Orinoco Card (Top)
Orinoco Card (Bottom)
card picture credits
Hyperlink Technologies
Omnidirectional 16dBi antenna
the results of very strong wind
history of newsfilter
Ambient TV
Mute magazine
youarehere
groundzero client connection history
More on free2air
Also by vortex

View: Display: Sort:
GZ - the story of groundzero | 1 comments (1 topical, editorial, 0 pending)
response none (#1)
by risinglucifer on Sat Mar 18th, 2006 at 18:01:24 GMT
(User Info)

blend-online.info acidy7.info escarstop.info actor7.info blips-online.info avian88.info adunc7.info bases88.info abaka7.info enurestop.info



 
GZ - the story of groundzero | 1 comments (1 topical, editorial, 0 pending)
View: Display: Sort:

freenetworks.org freenetworks.org freenetworks.org freenetworks.org freenetworks.org freenetworks.org
SourceForge Logo Powered by Scoop
All trademarks and copyrights on this page are owned by their respective companies. Comments are owned by the Poster. The Rest 1999 The Management

submit story | create account | faq | search