AP performance (again): txpower regulation

[Berislav Purgar]

On Thu, Sep 8, 2011 at 1:41 PM, Lev Serebryakov <lev at freebsd.org> wrote:

> Hello, Berislav.
> You wrote 8 сентября 2011 г., 13:14:38:
>
>
> gateway# ifconfig wlan1 scan
> SSID/MESH ID    BSSID              CHAN RATE   S:N     INT CAPS
> House           54:e6:fc:c2:08:ca    1   54M -71:-96  100 EPS  RSN WPA WME
> HTCAP ATH WPS
> gooodini        00:26:5a:ff:ee:e5    2   54M -87:-96  100 EPS  RSN WPA WME
> HTCAP ATH
> default         00:1f:c6:3c:24:7a    6   54M -80:-96  100 E
>                00:1e:58:2d:ea:67    3   54M -94:-96  100 EP   RSN ATH
> ZXL             00:19:cb:0a:71:bc   10   54M -96:-96  100 EP   WPA
> asus            20:cf:30:88:b5:90    1   54M -91:-96  100 EP   WPA
> Vlad            00:19:5b:e1:f1:aa    6   54M -89:-96  100 EPS
> interzet at 2      00:26:18:c6:81:98    1   54M -94:-96  100 EP   HTCAP WPS
> WPA WME
> knyagna         00:18:e7:ec:1d:eb    3   54M -144:-96  100 EPS  RSN WPA WME
> HTCAP ATH WPS
>
>  I notice one thing: in periods, when client was kicked from AP, it shows
> much stronger signal (sbout -45 dB when -65 is average with associated
> client).
>
> > i have AR5212 and it work great over 6m inside house (2 walls).
> > transfer rate i get is 2.4~3.2MB/s
>  My previous card (500mW some strange Australian brand name, buyed on
>  eBay, AR5212 based) gives me comparable results, yes. But I've fried it at
> hot summer AND change apartment at almost same time AND upgrade FreeBSD from
> 7 to 8 on router (I didn't have much time to watch HD movies after
> relocation, and didn't notice when situation becomes worse -- there was
> period of time when WiFi bandwidth didn't bother me at all). So, I'm not
> sure now, is it new card is crap or new apartment has "shielded" inner walls
> or FreeBSD8 has other power management. I've tried to build old FreeBSD 7
> image for router, but failed somehow -- kernel hangs on boot. I'll try more
> in near future.
>
> --
> // Black Lion AKA Lev Serebryakov <lev at serebryakov.spb.ru>
>
>
i think that  you have problem with interference from 802.11N based AP (i
see 5 ht ap from scan). you can try changing channels (13,14 channel) and
txpower (txpower 0-10) and see what happens.

Beri