[MLB-WIRELESS] World Wifi record

[Peter Berrett]

I defer to ther MW experts regarding this question.

cheers Peter


----- Original Message ----- 
From: "Tony Langdon, VK3JED" <vk3jed at vkradio.com>
To: "Peter Berrett" <vk3pb at optusnet.com.au>; "Peter Buncle" 
<peter at nmc.net.au>; <melbwireless at wireless.org.au>
Sent: Tuesday, January 03, 2012 10:00 AM
Subject: Re: [MLB-WIRELESS] World Wifi record


> At 12:52 PM 1/2/2012, Peter Berrett wrote:
>>Ok Let's do a sample calculation now based on the actual equipment I own
>>
>>I'll use the calculator at
>>
>><http://www.afar.net/rf-link-budget-calculator/>http://www.afar.net/rf-link-budget-calculator/
>>
>>We'll assume that the setup at Binunyong has the maximum power output made 
>>up of 30db gain dish plus 8db power output and -2db cable loss = 36 dbm 
>>maximum legal power
>>
>>At my end on Mt Dandenong a 24 dbm ex galaxy dish plus 14 dbm power and 
>>allow 2dbm cable loss with a Ubiquity bullet with -95 db receiver 
>>sensitivity @ 1Mb/s
>>
>>That should give a receive signal strength of -84.3 dbm with a fade margin 
>>of 10.7db
>>
>>Not a huge margin to play with but arguable doable. The Ubiquity will 
>>probably do 256kbs at -100 or -105dbm so that should give a bit more elbow 
>>room.
>
>
> No one's answered my question about the noise floor at GHO.  That could be 
> the limiting factor, rather than receiver sensitivity.
>
> 73 de VK3JED / VK3IRL
> http://vkradio.com
>