Cantenna Mobile Internet

Ok I don't know if this is strictly in the right place but maybe someone
can help. I have recently signed up for Vodafone's Mobie internet. A
dongle that runs from my sb port.

I get varying degrees of reception. Sometimes 2g and poor and sometimes
3g good.

Does the mobile internet run over same wavelenghts as mobile phones.
Can i build a form of cantenna to increase its reception

Any help greatly appreciated


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On Mon, 4 Feb 2008 16:46:23 -0500, surfsup
<(E-Mail Removed)> wrote in
<(E-Mail Removed)>:

>Ok I don't know if this is strictly in the right place but maybe someone
>can help. I have recently signed up for Vodafone's Mobie internet. A
>dongle that runs from my sb port.

USB port? Which dongle?

>I get varying degrees of reception. Sometimes 2g and poor and sometimes
>3g good.

Not surprising.

>Does the mobile internet run over same wavelenghts as mobile phones.

No.

>Can i build a form of cantenna to increase its reception

I suggest trying a simple reflector to see how much it would help.
http://www.freeantennas.com/

--
Best regards, FAQ for Wireless Internet: <http://Wireless.wikia.com>
John Navas FAQ for Wi-Fi: <http://wireless.wikia.com/wiki/Wi-Fi>
Wi-Fi How To: <http://wireless.wikia.com/wiki/Wi-Fi_HowTo>
Fixes to Wi-Fi Problems: <http://wireless.wikia.com/wiki/Wi-Fi_Fixes>

On Mon, 4 Feb 2008 16:46:23 -0500, surfsup
<(E-Mail Removed)> wrote:

>
>Ok I don't know if this is strictly in the right place

It's not, but that's ok.

>but maybe someone
>can help. I have recently signed up for Vodafone's Mobie internet.

This one?
<http://online.vodafone.co.uk/dispatch/Portal/appmanager/vodafone/wrp?_nfpb=true&_pageLabel=templateBlank&pageID=MI_ 0001>
or perhaps this one?
<http://online.vodafone.co.uk/dispatch/Portal/appmanager/vodafone/wrp?_nfpb=true&_pageLabel=template04&pageID=MB_000 1>
If so, it's a cellular data service.

>A
>dongle that runs from my sb port.

It's a USB port.

>I get varying degrees of reception. Sometimes 2g and poor and sometimes
>3g good.

3G is HSDPA which has less range than 2G which I'll guess(tm) is EDGE.

>Does the mobile internet run over same wavelenghts as mobile phones.

No. Wi-Fi (802.11) is at 2.4GHz. I'll guess that cellular in
Portugal is at 800Mhz and 1800MHz.

>Can i build a form of cantenna to increase its reception

Sure. At 800MHz, the can will be about 8 inches in diameter and
perhaps a foot long. Something like a small metal trash can. I can
just imagine what that would look like on your vehicle rooftop.

>Any help greatly appreciated

Ask in the Vodaphone newsgroups.
Specify your hardware and country.

The USB dongle does not have an external antenna, so anything you add
will wreck the warranty.

--
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
# 831-336-2558 (E-Mail Removed)
# http://802.11junk.com (E-Mail Removed)
# http://www.LearnByDestroying.com AE6KS

On Mon, 04 Feb 2008 19:56:03 -0800, Jeff Liebermann
<(E-Mail Removed)> wrote in
<(E-Mail Removed)>:

>On Mon, 4 Feb 2008 16:46:23 -0500, surfsup
><(E-Mail Removed)> wrote:

>>I get varying degrees of reception. Sometimes 2g and poor and sometimes
>>3g good.
>
>3G is HSDPA which has less range than 2G which I'll guess(tm) is EDGE.

Range of HSDPA (UMTS) is as good as EGPRS(EDGE), if not better.

>>Does the mobile internet run over same wavelenghts as mobile phones.
>
>No. Wi-Fi (802.11) is at 2.4GHz. I'll guess that cellular in
>Portugal is at 800Mhz and 1800MHz.

2100 MHz for 3G. Otherwise 900/1800 MHz.
http://www.gsmworld.com/roaming/gsminfo/cou_pt.shtml

>>Can i build a form of cantenna to increase its reception
>
>Sure. At 800MHz, the can will be about 8 inches in diameter and
>perhaps a foot long. Something like a small metal trash can. I can
>just imagine what that would look like on your vehicle rooftop.

2100 MHz won't be that different from 2400 MHz

--
Best regards, FAQ for Wireless Internet: <http://Wireless.wikia.com>
John Navas FAQ for Wi-Fi: <http://wireless.wikia.com/wiki/Wi-Fi>
Wi-Fi How To: <http://wireless.wikia.com/wiki/Wi-Fi_HowTo>
Fixes to Wi-Fi Problems: <http://wireless.wikia.com/wiki/Wi-Fi_Fixes>

thats great. Do you have any idea at which freq they run or how i might
find out


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oh andthis dongle - 'Vodafone Mobile Phone Shop'
(http://tinyurl.com/3y69db)


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On Tue, 5 Feb 2008 12:55:56 -0500, surfsup
<(E-Mail Removed)> wrote in
<(E-Mail Removed)>:

>thats great. Do you have any idea at which freq they run or how i might
>find out

<http://en.wikipedia.org/wiki/Umts#Spectrum_allocation>

--
Best regards, FAQ for Wireless Internet: <http://Wireless.wikia.com>
John Navas FAQ for Wi-Fi: <http://wireless.wikia.com/wiki/Wi-Fi>
Wi-Fi How To: <http://wireless.wikia.com/wiki/Wi-Fi_HowTo>
Fixes to Wi-Fi Problems: <http://wireless.wikia.com/wiki/Wi-Fi_Fixes>