How that cheap cards work PERFECT under windows ??
easy - you have several mile link with mikrotik, yeah? And do you have that same link with windows or do you “test” the same cards within living room where you have several TENS of decibels in signal strength ? I think that windows drivers are not going to work outdoor for more than several hundreds of meters (I mean 300, 600 or so) due to timing issue. I hope you undestand the difference between ‘functionality’ in living room, 10m distance and in outdoor environment (where you have plenty of coax, pigtails, connectors - which could be flaky also, btw, antennas and their alignment etc, etc).
What are alternatives ?
not software issue 
Trial is for free, download it, test it, report back. Looking forward for your conclusion.
Dorijan, my system hang with kernel panic when I enable wireless
interface with DL-g520 and trust speedshare. Which versions you use ?
this has been resolved in new versions - next comment about setting 2.4GHz band is correct. First set 2.4GHz (default is 5GHz, that’s it) and then enable interface. No kernel panic afterwards…
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mp3turbo2: how can it be hardware issue when they are working
perfectly under wireless-legacy drivers
windows is not in the game, definitely. Legacy drivers? Heyya, there is difference in behaviour of legacy and nstreme drivers, that’s correct. On shorter links with plenty of signal, nstreme may be better, but doesn’t have to be - or vice versa. No one knows for sure, your radiofrequency conditions will be different than mine. Beware, 802.11G and 802.11A DO NOT like even slight interference - in order to have reliable and solid throughput, you HAVE TO HAVE CLEAN RF !!! There’s nothing you can do with this - only lowering data rate, meaning lower throughput.
bixi: I use 2.8.16 but make sure you select band 2.4gh-g BEFORE you enable it!!!
What’s new in v2.8.17:
*) added - Atheros cards are checked for b/g and a band support;
simple as that, is it?
I use dlink, planet and trust cards…
yeah, the “best” ones on this planet = read: CHEAP, CHEAP, CHEAP AND ONE MORE TIME CHEAP taiwanese cards. Planet nor Trust have never been known for good cards, I have tested Planet and Micronet cards (sp906, if I remember correctly) and they went thru window to trash can! On solid link where we have tens of megabits of throughput (!!!), both of them were not able to achieve four or five megabits (!!!). Please, do not say anything else about those cards. Please.
The best alternative now is going with a commercial system like Proxim mp11.a
for sure, you just plug ethernet and you don’t have to care about anything.
Link is bad, output power is very low
this is hardware issue, once again.
I can assure you that I’ve seen throughput in the same living room from not even ten megabits to more than fifty megabits. The ONLY thing that changed was… ORIENTATION OF BUILT IN ANTENNA (that small stick). Yes, you read it right. Signal has almost no change, but throughput multiplied.
Every 10th packet is lost.
in living room? You must be doing something wrong. Definitely. Underpowered cpu, something bad in the RF part (cards, pigtails, antenna, connectors, anything). You can’t have 10% packet loss in living room. Once you solve this, move to outdoor environment…
bye, mp3turbo.
When I start wireless interface, ping is 1ms and every new request is slower and slower. There are many packet lost, and transfer is terrible.
