Re: Any tech support guys here?
It's been years since I have done any trouble shooting, but I will give it a shot.
Since your work PC seems to be working well enough (I assume wirelessly) and the Macbook has good performance while hard wired I would think that troubleshooting the aircard further would be a good next step.
If you are able to take the macbook to another location and use the wireless network there that might help to isolate the issue. A neighbor close by or a local Starbucks/cigar lounge perhaps would let you check the aircard easily.
Hope you find the issue and are able to get it resolved easily enough.
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