Re: [WISPA] Signal Strengths

2009-04-25 Thread Josh Luthman 
This happens a lot with metal roofs in the way.  10 feet over, around
the mentioned building we go from -90 to -65

On 4/25/09, Jack Unger  wrote:
> You're seeing normal RF behavior. Simply mount the antenna where the
> signal is the strongest then use your network monitoring system to keep
> an "eye" on it.
>
> Jason Wallace wrote:
>> Everyone,
>>
>> I had trouble during an install today regarding signal strengths.
>> 2.4Ghz CPE in a location that should be no problem.  Moving the CPE two
>> feet in any direction from the point where the CPE was installed
>> increased the signal by around 20db (-90 to -70!)
>>
>> Any idea of what phenomenon I am dealing with?
>>
>> Anything I should consider as I correct this install?
>>
>> Jason
>>
>>
>> 
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>>
>>
>>
>
> --
> Jack Unger - President, Ask-Wi.Com, Inc.
> Serving the Broadband Wireless Industry Since 1993
> Author - "Deploying License-Free Wireless WANs"
> Phone 818-227-4220  Email 
>
> No-cost Wireless Video Training April 23-24
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>
>
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>
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Re: [WISPA] Signal Strengths

2009-04-25 Thread Jack Unger 
You're seeing normal RF behavior. Simply mount the antenna where the 
signal is the strongest then use your network monitoring system to keep 
an "eye" on it.

Jason Wallace wrote:
> Everyone,
>
> I had trouble during an install today regarding signal strengths.  
> 2.4Ghz CPE in a location that should be no problem.  Moving the CPE two 
> feet in any direction from the point where the CPE was installed 
> increased the signal by around 20db (-90 to -70!) 
>
> Any idea of what phenomenon I am dealing with? 
>
> Anything I should consider as I correct this install?
>
> Jason
>
>
> 
> WISPA Wants You! Join today!
> http://signup.wispa.org/
> 
>  
> WISPA Wireless List: wireless@wispa.org
>
> Subscribe/Unsubscribe:
> http://lists.wispa.org/mailman/listinfo/wireless
>
> Archives: http://lists.wispa.org/pipermail/wireless/
>
>
>   

-- 
Jack Unger - President, Ask-Wi.Com, Inc.
Serving the Broadband Wireless Industry Since 1993
Author - "Deploying License-Free Wireless WANs"
Phone 818-227-4220  Email 

No-cost Wireless Video Training April 23-24 







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Re: [WISPA] Signal Strengths

2009-04-25 Thread John Scrivner 
This is almost certainly multipath interference where reflections are
cancelling  out the signal. Diversity is the only solution I know of
for this.
Scriv


On Fri, Apr 24, 2009 at 10:38 PM, Jason Wallace  wrote:
> Everyone,
>
>    I had trouble during an install today regarding signal strengths.
> 2.4Ghz CPE in a location that should be no problem.  Moving the CPE two
> feet in any direction from the point where the CPE was installed
> increased the signal by around 20db (-90 to -70!)
>
> Any idea of what phenomenon I am dealing with?
>
> Anything I should consider as I correct this install?
>
> Jason
>
>
> 
> WISPA Wants You! Join today!
> http://signup.wispa.org/
> 
>
> WISPA Wireless List: wireless@wispa.org
>
> Subscribe/Unsubscribe:
> http://lists.wispa.org/mailman/listinfo/wireless
>
> Archives: http://lists.wispa.org/pipermail/wireless/
>



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Re: [WISPA] Signal Strengths

2009-04-25 Thread Jason Wallace 




No big walls within sight.  I though the same thing, and even moved my
work truck in case I was catching a reflection from it.  Didn't help
though.  

I'm concerned that if I move it, whatever is causing the "highs" &
"lows" in signal strength will move too - eventually putting the cpe in
a "low" again...

Adam Greene wrote:

  You could be dealing with reflection, where the signal bounces off a nearby 
object(s) and cancels itself out at certain locations -- any big walls in 
the vicinity?


- Original Message - 
From: "Jason Wallace" 
To: "WISPA General List" 
Sent: Friday, April 24, 2009 11:38 PM
Subject: [WISPA] Signal Strengths


  
  
Everyone,

   I had trouble during an install today regarding signal strengths.
2.4Ghz CPE in a location that should be no problem.  Moving the CPE two
feet in any direction from the point where the CPE was installed
increased the signal by around 20db (-90 to -70!)

Any idea of what phenomenon I am dealing with?

Anything I should consider as I correct this install?

Jason



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Re: [WISPA] Signal Strengths

2009-04-25 Thread Adam Greene 
You could be dealing with reflection, where the signal bounces off a nearby 
object(s) and cancels itself out at certain locations -- any big walls in 
the vicinity?


- Original Message - 
From: "Jason Wallace" 
To: "WISPA General List" 
Sent: Friday, April 24, 2009 11:38 PM
Subject: [WISPA] Signal Strengths


> Everyone,
>
>I had trouble during an install today regarding signal strengths.
> 2.4Ghz CPE in a location that should be no problem.  Moving the CPE two
> feet in any direction from the point where the CPE was installed
> increased the signal by around 20db (-90 to -70!)
>
> Any idea of what phenomenon I am dealing with?
>
> Anything I should consider as I correct this install?
>
> Jason
>
>
> 
> WISPA Wants You! Join today!
> http://signup.wispa.org/
> 
>
> WISPA Wireless List: wireless@wispa.org
>
> Subscribe/Unsubscribe:
> http://lists.wispa.org/mailman/listinfo/wireless
>
> Archives: http://lists.wispa.org/pipermail/wireless/
>
> 





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[WISPA] Signal Strengths

2009-04-24 Thread Jason Wallace 
Everyone,

I had trouble during an install today regarding signal strengths.  
2.4Ghz CPE in a location that should be no problem.  Moving the CPE two 
feet in any direction from the point where the CPE was installed 
increased the signal by around 20db (-90 to -70!) 

Any idea of what phenomenon I am dealing with? 

Anything I should consider as I correct this install?

Jason



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