On Nov 24, 12:46*pm, Jeff Liebermann wrote:
On Sun, 23 Nov 2008 19:26:58 -0800 (PST), JIMMIE





wrote:
On Nov 23, 7:39*pm, Jeff Liebermann wrote:
On Sun, 23 Nov 2008 15:32:02 -0800, Jeff Liebermann
wrote:

NEC2 model:
http://802.11junk.com/jeffl/antennas/AMOS-7/
http://802.11junk.com/jeffl/antennas/AMOS-5/ *(not optimized yet)

Fixed. *I was feeling guilty so I ran it through the optimizer in
4NEC2. *I haven't built a 5 dipole AMOS yet using these dimensions.
I put one up I use with a WiFi repeater and I can see dozens of
wirless routers in my neighborhood. *The antena i mounted at about
20ft on my chimney. There are about 8 or 9 with no security. If I so
chose I would never have to pay for internet service. There is another
subdivsion behind my house I havent even looked at that one yet.

If stealing internet service from the neighbors is your intended
purpose, you selected the wrong type of antenna. *A sector antenna may
be a great idea for running a WISP or central access point, where
you're never sure of the direction the client radios are coming from.
It's a bad idea for use at the client end. *The idea is to pickup as
little interference as possible. *You're reception of 9 stations is a
problem as any one of these could provide sufficient interference to
make your pirated internet connection useless. * I suggest you look
into a panel or dish antenna, which will provide a much narrower
horizontal beamwidth, with the added bonus of more antenna gain.

Strange thing I know 3 of the people who have the open systems and
they are *farly savy about these things. I wonder if they are leaving
them open on purpose.

I was running an open access point at my office for a while. *However,
I was also monitoring connection attempts and traffic. *I figured that
nobody would bother. *Wrong. *I had some bum in a pickup truck and
camper, connect regularly to make VoIP phone calls. *I had no problem
with him using the system and we eventually came to an arrangement.
However, he stupidly told all his friends, who immediately abused the
system, so I locked it up with a WPA password.

In another incident, one of my customers was in a hotel that wanted
real money to use their Wi-Fi. *(This was about 6 years ago, before
the widespread proliferation of free Wi-Fi service). *So, he connected
to a random open access point. *The security on his laptop was more
than a little lacking (writable shared folders), resulting in the
installation of multiple trojan horses, spam bots, etc. *I suspect the
open access point was an intentional trap set for hotel visitors.

--
Jeff Liebermann * *
150 Felker St #D * *http://www.LearnByDestroying.com
Santa Cruz CA 95060http://802.11junk.com
Skype: JeffLiebermann * * AE6KS * *831-336-2558- Hide quoted text -

- Show quoted text -

I dont steal internet service but I do have an arrangement with a
couple of my neighbors so we can use each other service.
This has come in handy a couple of time now in just the last few
months when my cable went out and another neighbors cable modem went
out.
Its also a ton of fun just to build the antennas and be able to do it.

I must confess I have tapped in to a few unsecure home APs to check my
email while traveling. These are often easier to find than a hotspot.

Jimmie

JIMMIE wrote:

I dont steal internet service but I do have an arrangement with a
couple of my neighbors so we can use each other service.
This has come in handy a couple of time now in just the last few
months when my cable went out and another neighbors cable modem went
out.
Its also a ton of fun just to build the antennas and be able to do it.

I must confess I have tapped in to a few unsecure home APs to check my
email while traveling. These are often easier to find than a hotspot.

Jimmie

Funny story... I work as a contractor and was in an office in Louisiana
that supposedly had an internal wi-fi setup. Signal sure did seem weak
for an internal connection. All the guys there said they didn't know
what happened to it. "It used to work good".

Mr. Boss, the guy who installed it originally, was in town and said
"hey, whats wrong with the wifi?". Turns out the little wireless router
had fallen behind some other gear and become unplugged. All during this
time the office traffic had been going thru the network of a nearby
residence.

JIMMIE wrote:

...
I dont steal internet service but I do have an arrangement with a
couple of my neighbors so we can use each other service.
This has come in handy a couple of time now in just the last few
months when my cable went out and another neighbors cable modem went
out.
Its also a ton of fun just to build the antennas and be able to do it.

I must confess I have tapped in to a few unsecure home APs to check my
email while traveling. These are often easier to find than a hotspot.

Jimmie

I have a clearwire modem (it is great, inverter in the car, take it any
place with access), cable modem, and one company I contract with has
provided me with a T1 line ... the T1 is what I leave open.

Regards,
JS