Performance on Netgear MA111 USB adapters

Hi

Just bought two pcs. of Netgear MA111 USB Wireless adapters.

I had no problems installing the adapters and software. One is installed on
a Win2k PC, the other one on a WinXp PC. Yhe adapters are perfectly able to
'see' and detect each other, but the perfomance is very low. I'm not able to
get more than maximum ~400kb/s in transfer speed.
The adapters are in the same room, and in line of sight, however the signal
level is only around 20%, Is that normal ?

Any ideás for what could be the cause for this low performance?


Best regards

Gumse wrote:

> Hi
>
> Just bought two pcs. of Netgear MA111 USB Wireless adapters.
>
> I had no problems installing the adapters and software. One is installed on
> a Win2k PC, the other one on a WinXp PC. Yhe adapters are perfectly able to
> 'see' and detect each other, but the perfomance is very low. I'm not able to
> get more than maximum ~400kb/s in transfer speed.
> The adapters are in the same room, and in line of sight, however the signal
> level is only around 20%, Is that normal ?
>
> Any ideás for what could be the cause for this low performance?
>
>
> Best regards
>
>

At low signal levels, WiFi stuff automatically down-shifts from the
max. 11 Mb/s to 5.5, 2, or even 1 Mb/s. Look around to see what
you are using; at 2 Mb/s peak, 400 Kb/s sustained on large files
would be credible; at 1 Mb/s peak, 400 Kb/s sustained on large files
would be very good.

Separate thought: at 11 Mb/s, 400 KB/s sustained would be very good;
B = 8*b (a convention I wish everybody used).

Totally different thought: file overhead can be ugly with short files,
so make sure you are measuring STR with a single large file instead of
a folder full of itty-bitty files. Use a file big enough that you can
measure transfer time with a watch (don't just trust the STR values shown
by your software, unless you've calibrated it with known files and
known transfer params).

To get the signal strength up, try moving the antenna on one PC while
watching some continuous display of signal strength. Note that, if
one antenna is horizontal and the antenna at the other end of the link
is vertical, you will lose strength due to polarization. Also, note
that Line Of Sight means antenna to antenna, not PC to PC.
--
Cheers, Bob

Gumse wrote:

> Hi
>
> Just bought two pcs. of Netgear MA111 USB Wireless adapters.
>
> I had no problems installing the adapters and software. One is installed on
> a Win2k PC, the other one on a WinXp PC. Yhe adapters are perfectly able to
> 'see' and detect each other, but the perfomance is very low. I'm not able to
> get more than maximum ~400kb/s in transfer speed.
> The adapters are in the same room, and in line of sight, however the signal
> level is only around 20%, Is that normal ?
>
> Any ideás for what could be the cause for this low performance?
>
>
> Best regards
>
>

Another thought: turn off WEP while you chase performance. I don't know
how much performance WEP costs with your adapters and drivers; it seems
to be ~10% with mine. Probably minor, but don't let WEP cloud the
issue.
--
Cheers, Bob

Hi

Somehow the problem is solved. I moved one of the PC's into another room,
suddenly the signal level jumped to around 50% and the performance around
4-5 Mps !?

But thanks anyway :-)

Best regards

"Bob WIllard" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Gumse wrote:
>
> > Hi
> >
> > Just bought two pcs. of Netgear MA111 USB Wireless adapters.
> >
> > I had no problems installing the adapters and software. One is installed
on
> > a Win2k PC, the other one on a WinXp PC. Yhe adapters are perfectly able
to
> > 'see' and detect each other, but the perfomance is very low. I'm not
able to
> > get more than maximum ~400kb/s in transfer speed.
> > The adapters are in the same room, and in line of sight, however the
signal
> > level is only around 20%, Is that normal ?
> >
> > Any ideás for what could be the cause for this low performance?
> >
> >
> > Best regards
> >
> >
>
> Another thought: turn off WEP while you chase performance. I don't know
> how much performance WEP costs with your adapters and drivers; it seems
> to be ~10% with mine. Probably minor, but don't let WEP cloud the
> issue.
> --
> Cheers, Bob
>

In message <3f5cffaf$0$32503$(E-Mail Removed)> , Gumse
<(E-Mail Removed)> writes
>Somehow the problem is solved. I moved one of the PC's into another
>room,

Yes.... Try the bedroom. And use No. 3 position (you know, with the
aerial sticking straight up).

>suddenly the signal level jumped

That too,,,

:-)

As someone here recently said "location and position is everything..."
--
Tony Morgan
Smile in the face of adversity - and adversity will probably
think you're taking the piss and kick the shit out of you.