which wireless router?

[Derek Broughton]

Nils Kassube wrote:

> Derek Broughton wrote:
>> > On Sat, Feb 23, 2008 at 7:47 PM, Nigel Ridley <nigel at rmk.co.il> wrote:
>> >>  What's the difference between the ones with one antenna, two
>> >> antennas or even 3?
>>
>> They _claim_ more is better.  I can't help think they'd cause
>> interference patters, but perhaps that doesn't matter at such short
>> wavelengths.
> 
> If the antennas would be simply connected in parallel, there would be
> interference, independent from the wavelength. However, a WLAN router
> with several antennas uses antenna diversity for reception and selects
> the antenna with the better signal.

How can it tell one has a better signal unless it's constantly testing it?
-- 
derek