[kismac] Re: Signal strength
- From: Brad Knowles <brad@xxxxxxxxxxxxxxxxxxx>
- To: kismac@xxxxxxxxxxxxx
- Date: Wed, 1 Mar 2006 01:40:49 +0100
At 6:14 PM -0800 2006-02-27, John Warren wrote:
I can also perform the same equipment tests if we want averaging of
that equipment. It may be best to try to scale everything to whatever
the most common piece of hardware would be. I don't know what most
people use, but it may be the AE.
I don't think that this is a useful direction to pursue. An
Apple Airport card in a PowerBook G3 "Pismo" is going to have a
different signal strength pattern than a PowerBook G4 "TiBook", even
though it's the same card -- the difference in the computer
construction is enough to severely impact card performance. The same
would be true for comparison with the AlBooks, and against the new
You'd have to know precisely which model of card was used in
precisely which model of computer (there have been several
generations of TiBooks alone, and the latest generations of AlBook
had some pretty significant modifications over previous models), and
you'd have to know precisely what device was being tested against, in
precisely what kind of environment (i.e., is the wall 12" behind the
sample transmitter or 16" behind, is the wall made of wallboard,
plaster, or concrete, is the transmitter in a corner, how is the
transmitter oriented, ad infinitum).
I'm sorry, there's just too many variables to try and control.
In your testing, changing only the card used might result in a given
pattern of relative strengths, but the results from someone else
results might be totally different, even if they supposedly have the
same sample transmitter, the same computer hardware, and are testing
the same models of cards.
Brad Knowles, <brad@xxxxxxxxxxxxxxxxxxx>
"Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety."
-- Benjamin Franklin (1706-1790), reply of the Pennsylvania
Assembly to the Governor, November 11, 1755
LOPSA member since December 2005. See <http://www.lopsa.org/>.
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