On 4/22/07, Lan Barnes <[EMAIL PROTECTED]> wrote:
On Sun, April 22, 2007 12:15 am, Karl Cunningham wrote:
> Lan Barnes wrote:
>> So my question is this. Is there anything I need to do on the Myth box
>> and
>> perhaps the laptop to tell _their_ d-link cards that we're now doing the
>> 108G thing? And, yes, I have googled. But I know there are better
>> googlers
>> on this list.
>>
>> It would be nice to avoid drilling the ceiling for cat 5. My wife
>> *likes*
>> the Myth box just fine, especially when we don't have to fight the kids
>> to
>> wrestle her air time (the Friday Newshour, por exemplar) away from the
>> kids. But every time I put time into improving it, she gets that
>> withering
>> "it's JUST TV" look.
>
> You should be able to check the actual speed with iptraf on the server.
> The 802.11 stuff cuts back the speed if the signal strength is low. I
> did a test recently with a laptop, running iptraf while downloading a
> large file from an ftp server on the lan. Speed started dropping about
> 30' away. At 60-75' it had slowed to a crawl.
>
> EMBV (everyone's mileage is bound to vary).
>
> Karl
Hmm ... my router also has a "boost power" check box. I'll goose that and
see what happens.
Because you didn't mention it, I am surmising that there is NOT any 108G
mojo to apply to the receiving stations' drivers.
Note that there are two signal paths involved. The router/WAP to the
receiving PC and the
return path back to the router. Boosting the transmitted signal power
in one direction does not help the other. While most of the flow is
outward to the receivers, the return path is still necessary for
handshaking.
If your physical layout allows, a directional antenna on the WAP can
improve signal strength both ways. Decreasing the angular coverage
from 360 degrees to 120 or 90 degrees is a good thing.
carl
--
carl lowenstein marine physical lab u.c. san diego
[EMAIL PROTECTED]
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