in the old days of 802.11b the rule of thumb was 10 lamdas
I don't think that DSSS versus OFDM would change anything.
It should be pure physics (anyone can help on this one?)


f=c/lamda where c is 3 * 10 E8 m/s (speed of light)
and f = 2.4  10 E-9 Hz  ( 1 Hz = 1 cycle/s)

that's about 10 * 0.1 m ...

final approximate answer:

~1 meter or ~3 feet

Philippe Hanset
Univ. of TN


On Thu, 15 Jan 2004, James Savage wrote:

> Hi,
>   I recall someone mentioning an issue when co-locating APs/antennas too close
> together (within a few feet) even when they're broadcasting on difference
> channels (1,6 or 11).  We use Cisco gear but I suspect this is a 'radio' issue
> and therefore vendor-neutral? If this is the case, is there a rule-of-thumb
> minimum distance for 802.11b? Any chance this distance would increase when
> upgrading to G?
>
> .......thanks in advance........Jamie
>
>
> James Savage                              York University
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