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I saw this antenna on Ebay: http://cgi.ebay.com.au/15-dBi-Omni-2-4Ghz-WiFi-WLAN-Omni-Antenna_W0QQitemZ230159824618QQihZ013QQcategoryZ61816QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
and was wondering has anyone purchased this antenna & is it any good for wardriving etc?
Also,what else will I need to connect this Antenna to my laptop?
I'm just a newbie,so no bagging/flaming me please !
Also,I would have posted this in the "Antenna's" section,but for some weird reason I can't post there.
If 1 of the admin's can help me out there,then it would be great !

Ferengi

Ferengi wrote:I saw this antenna on Ebay: http://cgi.ebay.com.au/15-dBi-Omni-2-4Ghz-WiFi-WLAN-Omni-Antenna_W0QQitemZ230159824618QQihZ013QQcategoryZ61816QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
and was wondering has anyone purchased this antenna & is it any good for wardriving etc?
Also,what else will I need to connect this Antenna to my laptop?
I'm just a newbie,so no bagging/flaming me please !
Also,I would have posted this in the "Antenna's" section,but for some weird reason I can't post there.
If 1 of the admin's can help me out there,then it would be great !

Ferengi

You can't post in the antenna section because that's a FAQ, and I believe it's clearly labeled as so.

streaker69 wrote:You can't post in the antenna section because that's a FAQ, and I believe it's clearly labeled as so.

Yep,

http://www.netstumbler.org/showpost.php?p=43701&postcount=1


As for the antenna, it has a pretty narrow beam width, and it's probably a couple to a few feet long. Would probably look funny hooked up to a civic.

Are you gonna hook that antenna up to this spiffy card you're modding?

http://www.netstumbler.org/showthread.php?t=22900

Barry wrote:As for the antenna, it has a pretty narrow beam width, and it's probably a couple to a few feet long. Would probably look funny hooked up to a civic.

Let's get back to the main Topic,ok?This Antenna,will it or won't it work with a modded card or whatever I need to hook it up with a laptop?
Also,has Anyone actually USED this antenna for WarDriving?

streaker69 wrote:Are you gonna hook that antenna up to this spiffy card you're modding?

http://www.netstumbler.org/showthread.php?t=22900

Ha ha,funny.I made a mistake & I'll admit that I made a mistake.I guess doing some research will pay off next time hopefully.

Imagine a flat fender washer shape (or pie wedge shape with an 8 degree angle,) coming out of the antenna at 90 degrees to the antenna itself. A weak AP that is above the 8 degree wide beam won't be 'seen' and one below it won't be seen either. Only stuff that is within the pie wedge shape will be detected well. In short, not really good for Wardriving. Find one that has a beam width of 30 to 45 degrees or so.

Ferengi wrote:Ha ha,funny.I made a mistake & I'll admit that I made a mistake.I guess doing some research will pay off next time hopefully.

Maybe this will help.


Found this with a "high gain omni" search.

Airstreamer wrote:Imagine a flat fender washer shape (or pie wedge shape with an 8 degree angle,) coming out of the antenna at 90 degrees to the antenna itself. A weak AP that is above the 8 degree wide beam won't be 'seen' and one below it won't be seen either. Only stuff that is within the pie wedge shape will be detected well. In short, not really good for Wardriving. Find one that has a beam width of 30 to 45 degrees or so.

So,basically this antenna is no good?Or it will do the job I want it to do,which is get better range than a antenna biult into a "normal" wireless card ?

Airstreamer wrote:In short, not really good for Wardriving. Find one that has a beam width of 30 to 45 degrees or so.

So,what would be your recomendation in the 15dbi or similar range then?

Barry wrote:As for the antenna, it has a pretty narrow beam width, and it's probably a couple to a few feet long. Would probably look funny hooked up to a civic.

As for "looks",I aint too worried about how this antenna is going to be attached to my car,it will definitely in a vertical position though & more than likely on the bonnet of my car somewhere.

Ferengi wrote:So,what would be your recomendation in the 15dbi or similar range then?

None.

Pay attention. Imagine a candle flame in a dark room. It's light is spread out evenly. You take a set of curved mirrors and surround the flame and direct all the light you can in ONE direction in a beam. You have the same amount of light output, but now it is very bright in one area. Every thing else is dark.

In reverse, if you only want to see in that one area, great. If you want to see in other directions at the same time, lousy.

Get it?
If you don't, I suggest doing some RESEARCH on antenna theory.

Like most people on here, I don't mind giving out the occasional hint. However, I expect the interested party to take some initiative and do some digging on their own.

Start by looking up the words isotropic and gain with regards to antennas.

so airstreamer,what you are saying is that basically this antenna has a extremely narrow band & focuses on in 1 direction/area(more or less)?
but something with a beam width of 30 to 45 degrees or so,will pick up more AP's,right?
Sorry if I'm a bit of a "dumb dumb" at the moment,I aint good when people starting talking numbers & formula's etc to me.

Ferengi wrote:so airstreamer,what you are saying is that basically this antenna has a extremely narrow band & focuses on in 1 direction/area(more or less)?
but something with a beam width of 30 to 45 degrees or so,will pick up more AP's,right?
Sorry if I'm a bit of a "dumb dumb" at the moment,I aint good when people starting talking numbers & formula's etc to me.

Maybe you should move onto a simpler hobby, like counted cross stitch or something. No wait, that involves numbers too.

Ferengi,

The ideal antenna for wardriving is 7db or less, 5ish db being the preferred.



edit:

Almost forgot, F ebay!