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I want to make an AP from a Linux PC with an USB wi-fi adapter.

My attempts until now weren't really successful; either the driver missed the AP capability feature, or the signal strength was negligible even from the next room.

I would be really glad to reduce the costly buy-try-throw cycle, anybody has a good experience with such a thing?

If it is impossible (for example the power is not enough on the USB bus), PCI card would be also okay (I've tried one with an atheros chipset, but the signal strength was with it also negligible).

If it needs a little bit of sw/hw hacking, it is not a problem.

  • It sounds odd that you'd find a PCI card with a "negligible" signal strength. So I suspect your notion of what is a good signal strength might need to be described in more details. In most cases the signal strength mostly depends on the antenna more than the card itself. – Stefan Nov 18 '15 at 15:32
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    @Stefan Ok. From around 50cm distance it has the same signal strength as the wifi of my neighbors (they are 10m distance, behind at least one concrete wall). I use the antenna I've got from the manufacturer with it, have a direct visibility with the device, and I've tried the antennas in every possible orientation. Maybe it is a bad card, but if it is so, it would be sooo happy if I shouldn't buy a similarly bad hardware again. These buy - doesn't work - throw out - money lost loops are very, very embarrassing. Warranty isn't always applicable, and has also administrative / postal costs. – peterh Nov 18 '15 at 18:10

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