Latitude C640 with 1470 mini pci wifi has very low signal strength

I just installed 1470 broadcom mini pci card with the 4.10.40.0 (from decompression R115321.exe) on a Dell Latitude C640 driver version.

The card sees the network and connects, but I must be withinn 5 feet from the router, and even in this case the signal is 'Very low' (an or maybe 2 bars). I can communicate with various other wireless cards on other laptops with the full signal strength during the major part of the House.

Why the intensity of the signal would be so bad?

Is the 1470 is not very sensitive? the driver is bad for my setup? is there an INCOMPATIBILITY between the 1470 and the DLink DI-524 router? Is this an indication that the antenna on my wifi card is damaged? (I got it on ebay)

Any help would be greatly appreciated.

Thank you.

Latitude C640

Windows XP SP3

Wireless 1470 mini pci card

connected to the Dlink-524 (firmware 1.11) wireless router using WPA - PSK encryption

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