Prev: Need some technical advice--
Next: wireless hack
From: Jeff Liebermann on 2 Feb 2006 20:38
On Thu, 2 Feb 2006 20:26:45 -0500, "Rich" <Never(a)Aol.com> wrote:

>Can you recommend a good 802.11 antenna?
>For a card to give me a mile.

Nope. I can't recommend an antenna without knowing what you currently
have in the way of hardware, and what the neighbors or hot spot has
that you're trying to mooch off has in the way of hardware. Just
calculate the minimum necessary gain and the type of antenna will be
rather obvious. See:
| http://en.wikibooks.org/wiki/FAQ_for_alt.internet.wireless/Wi-Fi#Link_Calculations
for the link calculations. If there are any obstructions in the line
of sight, it probably will not work.

--
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
# 831-336-2558 jeffl(a)comix.santa-cruz.ca.us
# http://802.11junk.com jeffl(a)cruzio.com
# http://www.LearnByDestroying.com AE6KS
From: Skavenger on 3 Feb 2006 12:55
Thanks for the update however disaster!!

Whilst carrying out some more recordings the N Connector connected to the
Pigtail connected to the PCMCIA card fell off of the table ripping the mini
connector out of the card hey presto a broken pigtail and maybe a broken
PCMCIA external Antenna connection !!!!!!!!!!!!
I knew I should have cable tied it to the Laptop

Now plugging in the Homebrew Antenna the signal strength drops!!! Oooops

The pigtail was bloody expensive as well for what it was, at least the cards
internal ariel still works!!

Thanks for the info
"Skavenger" <bilharvs(a)btinternet.com> wrote in message
news:drt1r1$d43$1(a)nwrdmz02.dmz.ncs.ea.ibs-infra.bt.com...
> Hello;
>
> I have been gathering information on Homebrew Wireless Antennas and have
> made a couple as an experiment.
> Basically its for accessing my wireless network from my garage which is
> some way off.
> My latest one out of a Mini Cheddars Can seemed to work well, I think.
> I have been measuring the signal strength using Net Stumbler but I am a
> bit confused and need some quick pointers.
>
> I understand that signal strength and Noise is measured in dBm and think
> from what I have read on the Antenna Shoot out that the lower the dBm the
> better.
>
> Netstumbler shows a graph with a left hand Axis that shows the Signal
> Strength and Noise according to the help file the signal strength should
> be in green( The higher up the graph the better, higher up the scale the
> lower the dBm reading) and noise in red if available.
> My graph only shows a green bar so I guess thats signal strength.
> Last night while testing my PCMCIA card only I got a signal strength of
> about 60 dBm when I attached the Antenna I got about 40 dBm (Wrote it down
> somewhere) if that is the case I just increased my signal dramatically.
>
> I know it got better because when accessing my Network the wireless
> networks Icon increased from 36Mbps to 54Mbps.
>
> Does anyone know of a software tool for bechmarking or measuring wireless
> signal strengths in order to accurately record results.
>
> Thanks
>
> BH
>
>
>


First  |  Prev  | 
Pages: 1 2
Prev: Need some technical advice--
Next: wireless hack