I live just over 300m away from a house i need to make WiFi comms. with. It
is almost LOS but there are a few trees in the way. Ive been looking at a
few directional antennas on the net, but most are made from bean cans and
pringle tins. On principle, the bean cans look like they should work, but
could anyone please make any suggestions as to their credibility or
liklehood of working!

Any other (affordable!) means to make the comms. using an off the shelf
802.11 card?

thanks!
scott

I assume you have permission from the owner first? :-)

I'll assume you do... The Pringles can antennas do work very nicely -
they have an effective gain of 14-18dB. OTOH, they're Pringles cans -
i.e., mylar- or aluminum-coated cardboard. If you want something a bit
more substantial, check out http://www.cantenna.com. For $20 bucks, it's
a better bargain than growing your own...

Check out http://www.wi-fiplanet.com/columns/article.php/1008901

Follow the links there and you'll be up to speed in no time.

Scott Hill wrote:

I live just over 300m away from a house i need to make WiFi comms. with. It
is almost LOS but there are a few trees in the way. Ive been looking at a
few directional antennas on the net, but most are made from bean cans and
pringle tins. On principle, the bean cans look like they should work, but
could anyone please make any suggestions as to their credibility or
liklehood of working!

Any other (affordable!) means to make the comms. using an off the shelf
802.11 card?

thanks!
scott






--
Jon Gauthier

Given the likely reaction to an increase in
terror-alert level to "severe threat imminent,"
wouldn't a more appropriate alert color be brown?
-Brad Simanek on www.ruminate.com

Jon Gauthier wrote:
I'll assume you do... The Pringles can antennas do work very nicely -
they have an effective gain of 14-18dB. OTOH, they're Pringles cans -
i.e., mylar- or aluminum-coated cardboard. If you want something a bit
more substantial, check out http://www.cantenna.com. For $20 bucks, it's
a better bargain than growing your own...

It certainly looks well-constructed, but I'd have a lot more confidence in
Cantenna's products if they had measured (or even simulated) radiation
patterns and calculations. They also don't mention their feed arrangement
which could make a huge difference in actual performance.

---Joel Kolstad

Joel Kolstad wrote:

Jon Gauthier wrote:
I'll assume you do... The Pringles can antennas do work very nicely -
they have an effective gain of 14-18dB. OTOH, they're Pringles cans -
i.e., mylar- or aluminum-coated cardboard. If you want something a bit
more substantial, check out http://www.cantenna.com. For $20 bucks, it's
a better bargain than growing your own...

It certainly looks well-constructed, but I'd have a lot more confidence in
Cantenna's products if they had measured (or even simulated) radiation
patterns and calculations. They also don't mention their feed arrangement
which could make a huge difference in actual performance.

---Joel Kolstad


A home made yagi might fill the bill. Try one of these

http://www.geocities.com/gimmickmo/w...nna/brassyagi/
http://www.users.bigpond.com/darren....enna_for_2.htm
http://www.andrewhakman.dhs.org/yagi/

There are many others. I had some success with one.


vy 73

Andy, M1EBV

On Fri, 5 Dec 2003 01:59:05 -0800, "Joel Kolstad"
wrote:

It certainly looks well-constructed, but I'd have a lot more confidence in
Cantenna's products if they had measured (or even simulated) radiation
patterns and calculations. They also don't mention their feed arrangement
which could make a huge difference in actual performance.

For a few dollars more, you can get real commercial antennas. My
internet service comes to me via a 7 mile hop using a PCI card or
WGB external box running 100mw. Works great, giving me better than
1/3 T-1 connection. When I swing the antenna around, I see all of
my ISP's APs, including one 35 miles away in the next state. I've
got a few links if you need them. I just went through them and see
that some have changed, but there's lots of stuff out there for
WiFi. Your main worry is the antenna connector, if you are running
a PCMCIA card.

Gary
--
Replace x in adr with c

They do show minimal specs, not a isotropic map like you may be used to

for ham antenna adds but 12db, 30 degree angle of radiation Its fed with
type N-male

connector. up to 50 watts input power 1:5.1 avg SWR @2.5 Ghz

choice of feedline of course would be up to you but I wanted to get the

thing up and running so for test purposes I used 20 feet of old RG-58

30 mw input and have it pointed at my ISP 4.5 miles away that's how I

get 1.5 Mb internet service


--
Rex Geissinger KA6SQM
Microsoft Core Group
)
"Joel Kolstad" wrote in message
...
Jon Gauthier wrote:
I'll assume you do... The Pringles can antennas do work very nicely -
they have an effective gain of 14-18dB. OTOH, they're Pringles cans -
i.e., mylar- or aluminum-coated cardboard. If you want something a bit
more substantial, check out http://www.cantenna.com. For $20 bucks, it's
a better bargain than growing your own...

It certainly looks well-constructed, but I'd have a lot more confidence in
Cantenna's products if they had measured (or even simulated) radiation
patterns and calculations. They also don't mention their feed arrangement
which could make a huge difference in actual performance.

---Joel Kolstad

wrote:
On Fri, 5 Dec 2003 01:59:05 -0800, "Joel Kolstad"
wrote:


It certainly looks well-constructed, but I'd have a lot more confidence in
Cantenna's products if they had measured (or even simulated) radiation
patterns and calculations. They also don't mention their feed arrangement
which could make a huge difference in actual performance.


For a few dollars more, you can get real commercial antennas. My
internet service comes to me via a 7 mile hop using a PCI card or
WGB external box running 100mw. Works great, giving me better than
1/3 T-1 connection. When I swing the antenna around, I see all of
my ISP's APs, including one 35 miles away in the next state. I've
got a few links if you need them. I just went through them and see
that some have changed, but there's lots of stuff out there for
WiFi. Your main worry is the antenna connector, if you are running
a PCMCIA card.

Gary
Where does one get the external 100mw tranmitter? I am also looking for a
good omnidirectional radiator.

I have a linksys Wireless G router

Chip
73 kf4wbk