[SATLUG] External Laptop Antena and the SAFreePublicWiFi

John Champion satlugacct at jchampion.com
Fri May 15 09:34:37 CDT 2009

I used to have a contact for SA Public Wifi. I got him to boost his signal
at one point so that it would reach me at my office from Alamo Plaza. They
charge, I think, $20/month for access.

At my desktop, I can pickup about 16-20 wifi points but only a handful are


On Thu, May 14, 2009 at 6:58 PM, Todd W. Bucy <toddwbucy at grandecom.net>wrote:

> > There is no doubt the biquad is a more exotic solution than what I tried
> a couple of years ago.  Just a piece of coax with the correct impedance, I
> don't remember what impedance now of course, and a connector from altex for
> the wifi card. and an 11 ounce coffee can.  The included link has a
> calculator for the location of the hole you need to drill or gouge out. I
> kept it simple by trimming back the center conductor insulation to the right
> length.  If I recall about 1.2 inches.  And then soldered the shield
> directly to the can.  Here in Corpus my closest access point was about a
> half mile, and with obstrutions, but I could connect.  Of course the biquad
> is much cooler!
> > http://www.turnpoint.net/wireless/cantennahowto.html
> sorry for the long reply I have been so wrapped up trying to get my gps
> win sync with kismet, gpsdrive and google earth that I havent bothered
> to check my email.
> Success though milestone two is passed an I will conducting a passive
> scan of the downtown area.  hopefully I will have a nice kml file to
> open up with google earth.
> As for the antenna I will first build a couple of cantennas out of
> pringles cans in the next couple of days before I try out the bi-quad.
> Personally I think the bi-quad would look pretty cool on my roof.
> as for the range of my war-driving antenna that I hacked to my lappy I
> am picking up packets from about 4 to 5 blocks away.
> by the way anyone have any info on on a series of ap called
> SA_Public_wifi?
> Todd
> --
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