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Author Topic: [EN] (Solved) Ralink RT3062 n-wireless - slow speed  (Read 7674 times)

timc

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[EN] (Solved) Ralink RT3062 n-wireless - slow speed
« on: 2014/04/03, 16:09:37 »
I have some kind of hardware, driver, or configuration problem with my wireless card.

Yesterday, I got a new cable internet service. Due to the way it comes into my house, Ethernet is not really an option. At the modem via ethernet, it tests at around 61 mbps. I do not expect that kind of speed via wireless, although it should be possible, theoretically. My son's Macbook Pro via wireless tests to around 33 mbps. My iPad Air via wireless tests at around 17 mbps.

However, my main PC only gets around 7-10 mbps. I run Siduction amd64, the standard Debian Sid rt2800pci driver, and firmware-ralink. Pings to the router are very good, less than 1 ms. The wireless card is a Ralink RT3062 n chipset that is supposed to support up to 300 mbps. iwconfig shows the connection bit rate to be from 60-80 mbps (varies with time, up and down). So, why is the actual performance so low, when other wireless devices on the same wlan are so much faster?

I keep thinking it is a connection configuration problem, except for the fact that iwconfig shows a reasonably high connection bit rate. I have searched the web, but most of the articles I find are just about generic installation; I can't really find anything about tuning. Here is my configuration:

Code: [Select]
auto wlan0
iface wlan0 inet static
        address 10.0.0.9
        broadcast 10.255.255.255
        dns-nameservers 10.0.0.1
        dns-search 10.0.0.1
        gateway 10.0.0.1
        netmask 255.255.255.0
        network 10.0.0.0
        wpa-psk xxxxxxxxxxxxxxxxxxx
        wpa-ssid zzzzzzzzzzzzzzzzzz

Any help or advice would be much appreciated.
Tim
« Last Edit: 2014/04/03, 23:27:18 by timc »

timc

  • Guest
Re: Ralink RT3062 n-wireless - slow speed
« Reply #1 on: 2014/04/03, 18:01:22 »
I have found more info. I determined how to get connection info on the Macbook Pro. While the 80 mbps or so on the Debian system seems like it should be adequate, the Macbook Pro reports a bit rate of 324 mbps.

Also, I found a Debian command to force the connection to 11n mode. unfortunately, it does not work:

Code: [Select]
root@tim-pc:/etc/network# iwconfig wlan0 modu 11n
Error for wireless request "Set Modulation" (8B2F) :
    invalid argument "11n".

Tim



timc

  • Guest
Re: Ralink RT3062 n-wireless - slow speed
« Reply #2 on: 2014/04/03, 23:26:32 »
Ok, I finally got to a decent speed. I read an article that convinced me to try different "channels" of the router's radio settings. Channel 11 was worse than the default, whatever that was, but channel 10 was quite a bit better (17 mbps) and channel 9 was a lot better (29.4 mbps). Channel 8 was slower again (24 mbps), so I have set it onto channel 9 for the time being. The connection's bit rate is now shown as 240 mbps.

Later, I will probably test all the channels, but for now, things are very much better.

Tim

Offline ayla

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  • Posts: 1.745
Re: (Solved) Ralink RT3062 n-wireless - slow speed
« Reply #3 on: 2014/04/03, 23:38:48 »
Code: [Select]
iwlist scan may give you information of other accespoints in range and about their frequencies, channels and more. The greater the distance to used frequencies the better your connection should be.

greets
ayla

timc

  • Guest
Re: (Solved) Ralink RT3062 n-wireless - slow speed
« Reply #4 on: 2014/04/04, 01:48:15 »
Thanks for the tip. I just now ran it. Mine was the only one it found.

Tim

Offline ayla

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  • Posts: 1.745
Re: (Solved) Ralink RT3062 n-wireless - slow speed
« Reply #5 on: 2014/04/04, 09:08:11 »
that leaves the usual suspects...

Place and angle of an antenne (a few cm more distance or a 45° orientation insteed of a vertical or perpenticular orientation can help...)
Reinforced concrete ceiling or walls
Other interfering devices (e.g. cellphones, wireless phones, microwave ofen, other electrical installations between the receivers, ham radio...)