[Tiny-tux] Best of Gumstix-users: Jan 2010

Wladyslaw Zbikowski embeddedlinuxguy at gmail.com
Wed Jan 26 09:12:39 PST 2011


Always amusing when legal incriminations are invoked in a technical discussion.

---------- Forwarded message ----------
From: Cole Christensen <cole.christensen at gmail.com>
Date: Mon, Jan 24, 2011 at 3:23 AM
Subject: Re: [Gumstix-users] overo wifi strength with different antenna: query
To: "General mailing list for gumstix users."
<gumstix-users at lists.sourceforge.net>


Steve,

To put it bluntly, what you want to do is a public nuisance and most
likely illegal.

If you typed correctly, you want a 1.5 km link or more which is 10x
the normal maximum range of WiFi devices.

Before you begin make sure you understand your local laws, do a
detailed link budget, and consider those around you who want to use
their wireless in it's legal, intended fashion.

On Sun, Jan 23, 2011 at 2:40 PM, Steve Birch <steve at i-am-root.co.uk> wrote:
>
> I'm currently working on a project using the onboard wifi (fire-summit) to
> transmit runtime data and images to a remote PC in a time critical
> application - still in the early planning stages.  however, I'm curious on
> what "acceptable" ranges people are getting with the supplied u.fl antennas
> under normal circumstances. I'm contemplating using a u.fl to rev sma
> connector to fit a bigger antenna: has anyone tried to do this, and was it
> worth it/did it work?
>
> for reference i'm looking at pairing this:
> http://www.amazon.co.uk/inches-U-FL-pigtail-RP-SMA-female-connector/dp/B003S03DGM/ref=pd_sim_ce_6
> ... with a 9dbi aerial on the overo side of things. at the PC end i'm
> looking at a 2W generic USB transmitter, also with 9dbi aerial(s) to bump-up
> the range.
>
> i'm not too sure how "good" the onboard wifi is strength-wise (generally i
> dont use wifi), hence looking for any advice on this one. range-wise, i'm
> looking at achieving clear line-of-sight of atleast 1500m distance, with as
> low signal attenuation as possible (allowing for much larger ranges to be
> attainable in the future).
>
> Steve
> --
> View this message in context: http://old.nabble.com/overo-wifi-strength-with-different-antenna%3A-query-tp30743799p30743799.html
> Sent from the Gumstix mailing list archive at Nabble.com.
>
>
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------------------------------------------------------------------------------
Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)!
Finally, a world-class log management solution at an even better price-free!
Download using promo code Free_Logger_4_Dev2Dev. Offer expires
February 28th, so secure your free ArcSight Logger TODAY!
http://p.sf.net/sfu/arcsight-sfd2d
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