Wireless range limited, ask for help?

[xiaweiqi000]

I just set up a wireless lan in a building. I use Belkin 802.11b router and PC card. The range can not reach 4 walls. Actually it almost works for me except a few computers. Possible solutions may include the following options. I seek your experienced opions.

1. Add a range extender

I read some posts elsewhere saying that it's most probably not the problem of the router but the limitation of PC card. If this is correct, then adding a range extender should be meaningless since the PC card signal still can not reach router.

2. Change PC card to USB adator
Since I saw USB has outside attena, I guess maybe it will communicate with the router better.

3. Change to a different PC card.
I seek your experience in which wireless card can communicate with Belkin 802.11b router better.

Thank you very much for your possible reply.

[lwheeler]

Hmm, did you mean reach "through 4 walls"? A range extender?
Not sure what you mean by that.

Different/better antennas, or a an AP in repeator mode might be a solution.

Receiver sensitivity on the PC card is very key, Cisco has some of the best Cards on the market and will work with any 802.11b compliant devices.

[x586]

I'd move the AP so that it's only going through 3 walls.

The Belken USB 802.11b adapters are better then their pcmcia cards.