We have a couple of Dell C610 laptops with the Dell internal mini-pci 1300 b/g wifi cards.
The WAP is upstairs, and our son noticed that coverage downstairs was lower in the family room.
He tried it with my wife's laptop - a Fujitsu tablet with the Atheros AR5006esx internal wifi card and it worked much better...
Last night I grabbed the Fujitsu and installed NetStumbler, and setup both laptops next to each other running NS.
Amazingly, the Fujitsu with the internal Atheros card saw 18 APs !!! and the Dell only saw about 4 ? It was a mix of B and G, and channels 1,6,11 -
I sorted the NS list by signal strength and both laptops pretty much reported our own AP with the same numbers, but the Fujitsu clearly was seeing more of the wifi world.
SO....not sure if I should consider trying a different internal mini-pci wifi card for our Dell laptop or ???