Effective Range ?

Indoors : signal travel as far as 150 meters Outdoors: signal range is over 3 times greater i.e. 500 meters

more here:

-aljuhani

There isn't a simple answer as a variety of factors have to be taken into account.

1.Tx output power.Different countries have different rules for max power output and it can vary with the type of operation, point to point for example. 2,Rx sensitivity.Better sensitivity will increase range. 3.Type of Antenna on both systems can have an impact on range.Height of the antennas can also have an impact.Line of sight and multipath signals can also impact. 4,Data transfer rate.the slower the speed the more reliable the data and hence a longer distance can be used. etc......

People have achieved distances of several km's using the correct combination .

If you believe the advertising schpiel.

Reality check: expect to get no more than 100ft unless you use proper antennae, and expect to get much less if you have tinted glass, trees or anything cute in the way. Mark McIntyre

This is interesting because over the past couple years there's been talk about an 802.11n wireless standard. I read an article the other day about how it's fianlly been approved by the IEEE and can extend the signal range by 50%, compared to 802.11g. And, it's four times faster too. Here's the link:

snipped-for-privacy@digtrends.com hath wroth:

Please re-read the very first line again: "A faster and more far-reaching wireless Internet is coming within a year..." It hasn't been approved yet and is not expected to be approved for quite some time. See:

the timeline. Looks like 802.11n is scheduled for approval in July 2007.

Incidentally, MIT Technology Review is one magazine that's well worth reading.