5/100 ths of a mile puts it at -100dB

That's about 250' from the antenna.

-B-



Rubens Kuhl wrote:
> On Mon, Jun 7, 2010 at 5:43 PM, Steve Barnes <st...@pcswin.com> wrote:
>   
>> Ok I have never even thought about doing this.  Does it actually work?  This 
>> sounds WAY to simple.
>>     
>
>
> Yes, it does. Passive reflectors and passive repeaters are usual
> chapters on microwave literature, and you can read a brief description
> of them in Wikipedia:
> http://en.wikipedia.org/wiki/Passive_repeater
>
>   
>> A 29Db Grid on a Grain Leg  pointed at the AP that has a -68 signal plugged 
>> into a 24 DB Grid Pointed to the house 1/4 mile away.  What kind of signal 
>> would you have on the back side at the house?
>>     
>
> Without knowing the frequency it's hard to say, but you can apply the
> usual link budget calculations to get an idea. Depending on the
> antenna radiation patterns the final result can be different of the
> simple link budget (either better due to coupling or worse due to
> phase distortion).  I would include some vertical separation on the
> tower if possible.
>
> Gut feeling: 1/4 mile is short enough for this to work.
>
>
> Rubens
>
>
>
>
>   
>> Steve Barnes
>> RC-WiFi Wireless Internet Service
>>
>>
>> -----Original Message-----
>> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On 
>> Behalf Of Rubens Kuhl
>> Sent: Monday, June 07, 2010 4:20 PM
>> To: WISPA General List
>> Subject: Re: [WISPA] Repeater
>>
>> One option to consider is a passive repeater. Wire a coax cable between the 
>> two dishes and you are done... no electronics to fail, no power to supply on 
>> a remote location.
>>
>> (haven't tested this trick with dual polarity, though)
>>
>>
>> Rubens
>>
>>
>> On Mon, Jun 7, 2010 at 11:00 AM, Steve Barnes <st...@pcswin.com> wrote:
>>     
>>> I have avoided repeaters like the plague but I have a situation where I 
>>> have one and I am looking for a better option.  When I started my wisp I 
>>> was 100% Tranzeo.  At this one location I setup a CPE connected to a 
>>> TR-6000 that has 2 Ethernet ports that pass through POE.  I ran 1 Ethernet 
>>> up the tower with a POE at the bottom, and a crossover in between.
>>>
>>> I would like a similar layout for other locations.   Issue I see is that 
>>> not many other units, UBNT or MT have a 2nd Ethernet that pass through POE?
>>>
>>> How does everyone you get around this?
>>>
>>> Trying to stay cheaper than a RB433, 2 radios, and 2- antennas, box, 
>>> pigtails, 2 LMR cables.
>>>
>>> Steve Barnes
>>> RC-WiFi Wireless Internet Service
>>>
>>>
>>> ----------------------------------------------------------------------
>>> ----------
>>> 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/
>>>
>>>       
>> --------------------------------------------------------------------------------
>> 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/
>>
>>
>> --------------------------------------------------------------------------------
>> 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/
>>
>>     
>
>
> --------------------------------------------------------------------------------
> 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/
>
>
>   



--------------------------------------------------------------------------------
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/

Reply via email to