<html><head><style>body{font-family:Helvetica,Arial;font-size:13px}</style></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;"><br></div> <div id="bloop_sign_1407266385030444032" class="bloop_sign"><div style="font-family:helvetica,arial;font-size:13px"><br></div></div> <br><p style="color:#000;">On 5 Aug 2014 at 20:39:55, Hauke Mehrtens (<a href="mailto:hauke@hauke-m.de">hauke@hauke-m.de</a>) wrote:</p> <blockquote type="cite" class="clean_bq"><span><div><div></div><div>On 08/05/2014 03:09 PM, Pontus Karlsson wrote:
<br>>
<br>>
<br>>
<br>> On 5 Aug 2014 at 14:37:15, Arend van Spriel (arend@broadcom.com
<br>> <mailto:arend@broadcom.com>) wrote:
<br>>
<br>>> On 08/05/14 10:56, Pontus Karlsson wrote:
<br>>> > Hi Arend, and thanks a bunch for the configuration!
<br>>> >
<br>>> > As far as I understand it, the higher speeds of 11ac is dependent on
<br>>> > both modes operating simultaneously
<br>>> > and in cooperation. Is this correct?
<br>>>
<br>>> Not sure what you mean by modes, but I tend to say no here.
<br>>
<br>> It appears this was a misinterpretation from my part, as I said I am
<br>> very fresh with wireless networking
<br>> and the details that it revolves around.
<br>>
<br>> When I read about the specifications for several different adapters I
<br>> was under the impression that
<br>> for example adapters advertising themselves as 1750Mbps max rate in
<br>> their specifications meant
<br>> that they would work under 2.4Ghz and 5Ghz simultaneously to combine a
<br>> maximumd rate of
<br>> 1750Mbps. Now however after I’ve read a bit further I realize that the
<br>> max rate is merely the max rate
<br>> of their 2.4Ghz mode and 5Ghz, but not at the same time. So for 1750
<br>> that means a max of 1.3Gbps for
<br>> the 5Ghz and 450Mbps for the 2.4Ghz mode.
<br>>
<br>>>
<br>>>
<br>>> > You’re saying that all my STAs needs to be 11ac compatible, but one of
<br>>> > the main reasons I’m switching to 11ac is due to
<br>>> > the vary of different clients that connects to our network, there’s even
<br>>> > a few 802.11g clients (cellphones mainly).
<br>>> > According to different sources and specifications 11ac is supposed to be
<br>>> > compatible with both a/b/g/n/ac,
<br>>> > I suppose this is due to it’s operation on both modes as well?
<br>>>
<br>>> For the higher speeds your STAs should be 11ac compatible. Upon
<br>>> connecting the capbilities are negotiated.
<br>>>
<br>>> > I’m curious, what speeds do you measure with that setup, and with what
<br>>> > chipset / NIC?
<br>>>
<br>>> Not a question to ask me. I am biased as my employer is a wireless
<br>>> vendor :-p
<br>>
<br>> Ah I see that now. But then perhaps you could answer me this;
<br>>
<br>> The ASUS PCE-AC68 features the Broadcom BCM4709 chipset. One of the
<br>> features they brag with is the
<br>> Broadcom TurboQAM feature, which supposedly would combine the 2.4Ghz
<br>> data rate with the 5Ghz data rate
<br>> providing an “AC1900”-adapter. Does this mean that there’s two separate
<br>> radios? I know it’s dual band, but doesn’t
<br>> say whether i can use them simultaneously or not.
<br>
<br>The ASUS PCE-AC68 uses a BCM4360 [0] which is only supported by the
<br>proprietary Broadcom driver, which probably does not support AP mode and
<br>will probably cause some other problems. The BCM4709 is a ARM SoC
<br>without wireless. When you want to do something more than normal station
<br>mode with ieee80211ac in Linux I would suggest to buy something
<br>supported by ath10k. TurboQAM is the marketing name for using 256QAM in
<br>the 2.4 GHz band.
<br>
<br>[0]: https://wikidevi.com/wiki/ASUS_PCE-AC68
<br>
<br>Hauke
<br>
<br></div></div></span></blockquote><br><div>Yeah, I found that out as well. Apparently there were some mixup with the TurboQAM enabled router</div><div>that ASUS marketed about the same time, which utilizes both BCM4709 and BCM4360.</div><div><br></div><div>I’ve also read two sources; <a href="http://ubuntuforums.org/showthread.php?t=2219385">http://ubuntuforums.org/showthread.php?t=2219385</a> and <a href="https://bbs.archlinux.org/viewtopic.php?id=181240">https://bbs.archlinux.org/viewtopic.php?id=181240</a> confirming that the Broadcom drivers that is required to be used does not support the 11ac mode anyway, leaving their cards acting as “really expensive 11g” cards.</div><div><br></div><div>You’re recommending any chipset using the ath10k drivers, do you by chance happen to know any adapters that</div><div>has a chipset that is supported by this? Only one I can find to buy here in Sweden is the Compex WLE900VX, but on the wikidevi it says that some 9880 chipsets are unsupported by ath10k.</div><div><br></div><div><br></div></body></html>