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  #1 (permalink)  
Old 11-11-2007, 09:02 PM
curly Bill
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Default Re: 2.4 Ghz 24dbi Grid Antenna No Signal!!


> Iv just bought a 24dbi grid antenna with 10 meters of LLC400 Coxial
> cable from here :'eBay Seller: wifilink uk: Networking, Computing items
> on eBay.co.uk'
> (http://search.ebay.co.uk/_W0QQfgtpZ1...ZwifilinkQ5fuk)
>
> I am using a 200mw pci card to connect the antenna to bought from
> here:'Find 200mW Wireless WiFi G/B Desktop PCI Card Jack & Antenna on
> eBay within PC Cards, USB, Adapters, NICs, Wireless Networking, WiFi,
> Networking, Computers Networking (end time 17-Nov-07 00:00:00 GMT)'
> (http://tinyurl.com/2uaonw)


> I am using a low loss cable which has a loss of 0.22db per meter so the
> 10 meter cable shouldn't be a problem should it?


I think the cable IS your problem.

What I prefer would be an Ethernet to wireless bridge near your antenna
with a short pigtail, powered with POE. You could put it in a water
tight box or under an upside down bucket.

My opinion

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  #2 (permalink)  
Old 11-12-2007, 08:25 PM
kr3 kr3 is offline
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Join Date: Nov 2007
Posts: 7
Default Hi Thanks For Your Reply

I think the cable IS your problem.

What I prefer would be an Ethernet to wireless bridge near your antenna
with a short pigtail, powered with POE. You could put it in a water
tight box or under an upside down bucket.

Hi thanks for your reply. I really was thinking no one would reply. Anyway could you please explain the Ethernet to wireless bridge. Would the antenna be connected to the Ethernet to wireless bridge and the wireless to Ethernet to wireless bridge connected to the computer?

Also wouldn't it just be easier to use a smaller length of the pigtail. I was planning on buying a short 2 meter LLC400. Would this be ideal to receive the maximum potential of the antenna? What is the maximum limit of pigtail I should be using to ensure maximum potential of the antenna?

Thanks
KR3
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  #3 (permalink)  
Old 11-13-2007, 04:30 AM
curly Bill
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Default Re: 2.4 Ghz 24dbi Grid Antenna No Signal!!

Would
> the antenna be connected to the Ethernet to wireless bridge and the
> wireless to Ethernet to wireless bridge connected to the computer?
>


Yes, that is what it is.
There isn't any loss over Ethernet cable.
The can also be known as a game adapter.

> Also wouldn't it just be easier to use a smaller length of the pigtail.
> I was planning on buying a short 2 meter LLC400. Would this be ideal to
> receive the maximum potential of the antenna? What is the maximum limit
> of pigtail I should be using to ensure maximum potential of the
> antenna?
>


I would think 1 meter or less would be max, it might be hard to put the
antenna that close to the computer with wireless card that you bought.

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  #4 (permalink)  
Old 11-15-2007, 12:01 PM
kr3 kr3 is offline
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Join Date: Nov 2007
Posts: 7
Default

Thanks for your reply again. Could you please give me some suggestions on which ones to buy for the POE and the Ethernet to Wireless bridge? And could you explain in detail how they would be connected. I'm a little confused!

Thanks
KR3
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  #5 (permalink)  
Old 11-19-2007, 06:45 PM
kr3 kr3 is offline
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Join Date: Nov 2007
Posts: 7
Default

Please Reply!!! Thank You!!
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  #6 (permalink)  
Old 11-24-2007, 06:28 PM
curly Bill
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Default Re: 2.4 Ghz 24dbi Grid Antenna No Signal!!

kr3 wrote:
> Thanks for your reply again. Could you please give me some suggestions
> on which ones to buy for the POE and the Ethernet to Wireless bridge?
> And could you explain in detail how they would be connected. I'm a
> little confused!
>
> Thanks
> KR3
>
>
> ------------------------------------------------------------------------
> View this thread: http://www.wirelessforums.org/alt-internet-wireless/re-2-4-ghz-24dbi-grid-antenna-no-signal-31944.html
> http://www.wirelessforums.org
>


What you want is something similar to this
http://tinyurl.com/3bcggb

I use equipment for home use (toys), so I would hardly be in the
position to give advise.

Professional equipment costing more is more reliable and some come
equipped with POE insertion as a standard feature where I bought a
separate unit to do this.

Some people will modify a bridge to perform this function
http://www.mikemcarthur.net/article....178&mode=print

Specs for Europe are different than for the USA (you don't mention where
you are)

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  #7 (permalink)  
Old 11-26-2007, 10:23 PM
kr3 kr3 is offline
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Join Date: Nov 2007
Posts: 7
Default

Hi

Sorry about that I am from the UK. I just have one question the ethernet to wireless bridge would need enough power to power the antenna. This would have to be atleast 200MW, I am pretty sure most ethernet to wireless bridges would not be capable of this!

Thanks
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  #8 (permalink)  
Old 11-27-2007, 03:41 PM
curly Bill
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Default Re: 2.4 Ghz 24dbi Grid Antenna No Signal!!

kr3 wrote:
> Hi
>
> Sorry about that I am from the UK. I just have one question the
> ethernet to wireless bridge would need enough power to power the
> antenna. This would have to be atleast 200MW, I am pretty sure most
> ethernet to wireless bridges would not be capable of this!
>
> Thanks



As far as I know an antenna is passive, and if you were to power a 24dbi
grid antenna with 200mw (at least here in the US) you would be breaking
the law and subject to a fine. Maybe you have information I don't know
about, if so, could you post a link?

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  #9 (permalink)  
Old 11-27-2007, 05:31 PM
DTC
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Default Re: 2.4 Ghz 24dbi Grid Antenna No Signal!!

curly Bill wrote:
> kr3 wrote:
>> Hi
>> Sorry about that I am from the UK. I just have one question the
>> ethernet to wireless bridge would need enough power to power the
>> antenna. This would have to be atleast 200MW, I am pretty sure most
>> ethernet to wireless bridges would not be capable of this!
>> Thanks

>
>
> As far as I know an antenna is passive, and if you were to power a 24dbi
> grid antenna with 200mw (at least here in the US) you would be breaking
> the law and subject to a fine. Maybe you have information I don't know
> about, if so, could you post a link?


Unless its an "active" antenna (which would be the equivalent of adding
an amplifier), it would be a passive device.

In the US, a 24 dBi antenna connected to a 200 mW transmitter would just
barely be illegal; but by the time you add in the 1 dB loss or so for
cable and connectors, you effectively have 23 dBi system connected to
the 200 mW transmitter and that would be legal in a Point-to-Point system.

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  #10 (permalink)  
Old 11-28-2007, 04:05 AM
curly Bill
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Default Re: 2.4 Ghz 24dbi Grid Antenna No Signal!!

DTC wrote:
> curly Bill wrote:
>> kr3 wrote:
>>> Hi
>>> Sorry about that I am from the UK. I just have one question the
>>> ethernet to wireless bridge would need enough power to power the
>>> antenna. This would have to be atleast 200MW, I am pretty sure most
>>> ethernet to wireless bridges would not be capable of this!
>>> Thanks

>>
>>
>> As far as I know an antenna is passive, and if you were to power a
>> 24dbi grid antenna with 200mw (at least here in the US) you would be
>> breaking the law and subject to a fine. Maybe you have information I
>> don't know about, if so, could you post a link?

>
> Unless its an "active" antenna (which would be the equivalent of adding
> an amplifier), it would be a passive device.
>
> In the US, a 24 dBi antenna connected to a 200 mW transmitter would just
> barely be illegal; but by the time you add in the 1 dB loss or so for
> cable and connectors, you effectively have 23 dBi system connected to
> the 200 mW transmitter and that would be legal in a Point-to-Point system.


I'm sorry, the calculator on this page
http://www.radiolabs.com/stations/wifi_calc.html
says it would be a 47.01 dB system.

Check out the discussion on this site
http://www.dailywireless.org/2003/04/30/long-haul-54g/

I don't know anything about this stuff, and I didn't want to know.
But this seems to back up what I said.

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  #11 (permalink)  
Old 11-28-2007, 04:15 AM
curly Bill
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Default Re: 2.4 Ghz 24dbi Grid Antenna No Signal!!

DTC wrote:
> curly Bill wrote:
>> kr3 wrote:
>>> Hi
>>> Sorry about that I am from the UK. I just have one question the
>>> ethernet to wireless bridge would need enough power to power the
>>> antenna. This would have to be atleast 200MW, I am pretty sure most
>>> ethernet to wireless bridges would not be capable of this!
>>> Thanks

>>
>>
>> As far as I know an antenna is passive, and if you were to power a
>> 24dbi grid antenna with 200mw (at least here in the US) you would be
>> breaking the law and subject to a fine. Maybe you have information I
>> don't know about, if so, could you post a link?

>
> Unless its an "active" antenna (which would be the equivalent of adding
> an amplifier), it would be a passive device.
>
> In the US, a 24 dBi antenna connected to a 200 mW transmitter would just
> barely be illegal; but by the time you add in the 1 dB loss or so for
> cable and connectors, you effectively have 23 dBi system connected to
> the 200 mW transmitter and that would be legal in a Point-to-Point system.


http://www.dailywireless.org/2003/04/30/long-haul-54g/

OOPS
Sorry I just read this further down the page and it seems you are right

"A stock 200 mW PC card (+23dB) can feed a +24dB dish (in point to point
mode) and still be street legal because you can go up to 63 watts
(+48dB). A solid-state Soekris box with a couple of 200 mW cards feeding
a couple of 24dB dishes, is, in fact, the basis of the Bay Area Wireless
Metro Network. Each relay node costs about $2,000."

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  #12 (permalink)  
Old 12-01-2007, 08:56 PM
curly Bill
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Default Re: 2.4 Ghz 24dbi Grid Antenna No Signal!!

kr3 wrote:
> Hi
>
> Sorry about that I am from the UK. I just have one question the
> ethernet to wireless bridge would need enough power to power the
> antenna. This would have to be atleast 200MW, I am pretty sure most
> ethernet to wireless bridges would not be capable of this!
>
> Thanks
>
>
> ------------------------------------------------------------------------
> View this thread: http://www.wirelessforums.org/showthread.php?t=31944
> http://www.wirelessforums.org
>



Maybe you can find something like this in the UK
http://www.engeniustech.com/datacom/...ls.aspx?id=170
400mw, seperate poe injector available.

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