Re: Wifi Booster for less than a buck.

Russell Senior <[email protected]> 20 Nov 2007 15:34:47 -0800
Newsgroups gmane.network.wireless.portland.general
Message-ID <[email protected]>
>>>>> "Tom" == Tom Higgins <[email protected]> writes:

Tom> Someone give this a try, id love to see what the hard numbers
Tom> are.  If I get a break in the holidays I might try it on an old
Tom> linksys duck.

I've cobbled together something similar while testing 11a radios and
needing something to radiate *something*.  What the video is showing
is equivalent to about a 5 dBi antenna, which is where the "twice the
range and twice the power" is coming from.  5 dBi is "twice the power"
compared to 2 dBi, as your power doubles for every 3 dB.  However,
your power drops as the square of the distance (2 squared is 4x) or
about 6 dBi for every doubling of distance, so that part is wrong.
Bearing in mind my non-expertness in RF, I'd be suspicious of losses
in that solder joint too, if it isn't done cleanly.

The nice book

   http://wndw.net/download.html

has some material on antenna construction and theory.  It even points
at some software NEC2.  See:

   http://wndw.net/pdf/chapter4.pdf


-- 
Russell Senior, Secretary
[email protected]

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