Hi all,
I just set up a wireless network in my home. There are several other
wireless networks in the immediate area and and I have noticed some
strangeness in how my equipment reacts to them. I'm hoping someone
can explain it.
Everything is Netgear 802.11g hardware: a WGT624 router, a WGE101
bridge and a number of WG511T PCMCIA cards.
The bridge is placed high in an attic room and can "see" the largest
number of the surrounding nets - up to 5 sometimes. Although it
always sees my own network, it's list of "available networks" changes
frequently with other networks that come and go randomly.
My portables all display similar behavior just about everywhere in the
house - they nearly always see my network (couple of blackout areas),
but frequently see one or two other networks which come and go.
I have tried connecting to some of these other networks (the open
ones) when they are available and they really are there. I initially
chalked up the random (dis)appearances to interference.
But then I placed one of the portables next to the bridge (about a
meter away at roughly the same elevation) and scanned for networks
with both. To my surprise, the two units returned (mostly) disjoint
lists. They both saw my network, but the other networks they saw were
completely different.
I have repeated the experiment and found that disjoint lists (having
only my own network in common) is the norm - it happens about 90% of
the time. I have tried it with the portable in other high locations
within the house and found the same. I expected one unit (either the
bridge or the PCMCIA card) might be less sensitive and show a subset
of the other's list, but I was totally unprepared for differing lists.
The wavelength for 2.4GHz nets is about 12.5 cm - it should be hard to
put antennas in a node for any network - much less two or three
simultaneously? What am I missing here?
Thanks,
George
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