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willie
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does airport card have to be replaced

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Macbook A1181 2.16 ghz

signal fluctuates from one to 3 bars from a total of 4 bars

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mayer
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It's according to your location.

If you know it's just your computer and not walls or electrical interference then do so. I would first open it and check all connections. If you have another computer next to yours that's receiving a much better signal then replace it.

Here's the card: MacBook Core 2 Duo 802.11n Airport Extreme Card

Here's how to install it: Installing MacBook Core 2 Duo AirPort Card

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MacBook Core 2 Duo 802.11n Airport Extreme Card

802.11n Airport wireless internal card  — 25 available at 79.95 each.

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