OT: Bad Performance with Senao NL-2511CD ?
doug at aircomwireless.net
Wed Jan 8 08:01:29 EST 2003
I have this card and I am using it w/ an 32 slot omni-directional
I was using the wmp11. I can notice an improvement over that card
I did notice that only one of the jacks worked at all for tx. Only the
primary jack transmits. I thought something was messed up bad and then
I just switched the jack it was plugged into and I did an iwconfig and
watched the driver adjust the tx power. That was really cool. It
climbed up to 20db and then stopped.
I then took my laptop w/ a crappy pcmcia antenna and drove in my car up
to about 1/4 miles away and was able to surf the web...that was pretty
cool. Line of site is important though. I'll try the yagi antenna next
week when I get it. Fun geeky stuff! :)
From: hostap-admin at shmoo.com [mailto:hostap-admin at shmoo.com] On Behalf
Of Martin Polak
Sent: Wednesday, January 08, 2003 2:41 AM
Cc: hostap at shmoo.com
Subject: Re: OT: Bad Performance with Senao NL-2511CD ?
> On Tue, 2003-01-07 at 17:28, Martin Polak wrote:
>>the new card is now attached to the same antenna as the old card
>>And instead of getting better performance from the 23dbm card, I get
>>less SNR and weaker connections than from the old 15dbm card. I even
>>tried to pull-up txpower, using iwconfig but nothing would help.
>>The card inits fine, using STA 1.4.9 and even loads 1.5.6 perfectly.
> Do you *know* for a fact that the Senao card has more output power?
> Don't just rely on the manufacturers data. Have you tested both cards
> with equipment in a lab? [I'm guessing not]. Perhaps you should do a
> little research into the Senao card and see what other WLAN
> are saying about it.
Right, lacking this lab equipment, i couldn't do this tests.But my sense
of logic tells me, that I card stated to have more than 6 times the
output power and according to a chart found in the web (dont remeber the
link)a better rf sensitivity, it should at least perform equal to the
old one, shouldn't it.
> Try swapping the card
> with a different example of the same model.
I think i always did this.
> Well it's probably not you ;-) Have you checked the electrical
> of the RF connector? Maybe it is idiosyncratic?
> Every coupling causes losses. And remember, if you change more than
> variable at once, It Ain't Scientific ;-)
Yes I know, but remeber the thing about 'lacking the right equipment'
Thanks for your thoughts anyway!
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