Date: Wed, 7 Mar 2007 20:34:51 -0500 From: "Yuri Lukin" <lists@swaggi.com> To: freebsd-current@freebsd.org Subject: Re: CFT: newath hal Message-ID: <20070308011813.M125@swaggi.com> In-Reply-To: <45C2A9AC.10909@errno.com>
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On Thu, 01 Feb 2007 19:02:04 -0800, Sam Leffler wrote > You can find hal version 0.9.30.7 here: > > http://people.freebsd.org/~sam/ath_hal-20070201.tgz > I was finally able to get my point-to-point link working with Ubiquiti SR9 cards and 0.9.30.7 hal (after some guidance from Sam off-list - many thanks). My original problem turned out to be hardware related, apparently you need a device that is capable to provide enough power to the minipci slot to power the 700mW SR9. The symptoms were all sorts of hardware weirdness and status codes and I kept seeing "no carrier" on one side. After moving the card to a more powerful test device, the problem was resolved. My test setup was as follows: STA side: WRAP.2C + SR9 + 900mhz 3dBi omni AP side: Soekris Net4521 + SR9 + 900mhz 3dBi omni I tested two quick scenarios: one with both STA and AP side-by-side and the other with AP & STA on two different floors. In both cases the AP was connected to an existing live network and the STA had a laptop attached to its ethernet port. I tested throughput with a large FTP transfer from a server behind the AP to the laptop (for lack of a better tool). I was actually able to achieve a higher transfer rate while going between floors. Probably due to the RF propagation patterns of the antennae and the way they were positioned in the side-by-side scenario. The throughput test yielded sustained approximate rate of 9.6Mbit/sec and 12.8Mbit/sec when side-by-side and between floors respectively. One interesting thing to note is that the STA (WRAP) side always reported an RSSI higher then the AP by about 10 points. I also grabbed output from athstats if anyone is interested. Overall, everything worked well once the hardware issue was resolved and I look forward to deploying some point-to-point 900mhz links over longer distances with some more powerful antennae. Many thanks to Sam for his work and continued support. Yurihome | help
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