Re: [PLUG] Public Service Announcement (Really)

[edmond rodriguez <erodrig_97@yahoo.com>]

While these would require a way to connect an external antenna, and I *think* they are mostly if not very directional, I thought I would share these links about home made antennas.   Depending on one's location, maybe they could be useful?

http://www.oreillynet.com/etel/blog/2001/07/antenna_on_the_cheap_er_chip.html

http://www.turnpoint.net/wireless/cantennahowto.html

http://www.cantenna.com/   (some ready made ones.... price not bad?  and more> http://wirelessgardenstore.com/SearchResult.aspx?CategoryID=28

http://en.wikipedia.org/wiki/Cantenna



Edmond Rodriguez



----- Original Message ----
> From: zuzu <sean.zuzu@gmail.com>
> To: Philadelphia Linux User's Group Discussion List <plug@lists.phillylinux.org>
> Sent: Monday, February 16, 2009 9:48:02 PM
> Subject: Re: [PLUG] Public Service Announcement (Really)
> 
> On Mon, Feb 16, 2009 at 7:36 PM, Brian Vagnoni wrote:
> >
> > Yes there are some USB dongles that support up to 500mw. I own one it's called 
> an Alfa AWUS036H but they are in the minority. Most PC-Card are 100mw, though I 
> also own a UBNT 300mw PC-Card. Many don't support external antennas. Your 
> average Linksys WAP54G supports 70mw. The Philadelphia Wireless supplied PepLink 
> used a 200mw Atheros 5212 radio with a non-diversity 9dbi external antenna. 
> These weren't enough to make a good stable Cisco recommended 35db SNR connection 
> even when sitting below the street mounted AP. But I admit I've tested speeds 
> anywhere from below dialup to 3mb x 3mb.
> 
> 600mw atheros cards are available from Ubiquiti.
> 
> http://www.ubnt.com/products/
> http://www.ubnt.com/products/xr2.php
> http://www.ubnt.com/products/xr5.php
> 
> There are less expensive but equally powerful (claimed) solutions
> though, such as the Senao / enGenius cards.
> 
> 
> You can also get 3-25 watt amplifiers from Hyperlinktech / L-com, but
> at that level I _think_ either you need some kind of commercial
> license, or you're invoking Part 97 of the Amateur Radio license
> (which allows up to 1500W).
> 
> http://www.l-com.com/category.aspx?id=2021
> http://en.wikipedia.org/wiki/High-speed_multimedia_radio
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