[MLB-WIRELESS] World Wifi record

[Peter Berrett]

Re: [MLB-WIRELESS] World Wifi recordI have taken down my Ubiquity Bullet M2 and my slotted waveguide (modified)

They should work well for this exercise as the Bullet is quite sensitive. I will try and test the antenna today.

cheers Peter


  ----- Original Message ----- 
  From: Peter Buncle 
  To: vk3pb at optusnet.com.au ; vk3jed at vkradio.com ; melbwireless at wireless.org.au 
  Sent: Tuesday, January 03, 2012 10:17 AM
  Subject: Re: [MLB-WIRELESS] World Wifi record




  One point here,

  The wireless speed's are what they are.

  Ie the minimum speed is 1mbs using a wifi protocol.

  I would want to have a calculated min of -85 before an onsite test.


  Peter


  ----- Original Message -----
  From: Peter Berrett <vk3pb at optusnet.com.au>
  To: Peter Buncle; vk3jed at vkradio.com <vk3jed at vkradio.com>; melbwireless at wireless.org.au <melbwireless at wireless.org.au>
  Sent: Mon Jan 02 12:52:16 2012
  Subject: Re: [MLB-WIRELESS] World Wifi record

  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/

  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.

  cheers Peter 








          ----- Original Message -----
          From: Peter Buncle <mailto:peter at nmc.net.au> 
          To: Peter Berrett <mailto:vk3pb at optusnet.com.au>  ; vk3jed at vkradio.com ; melbwireless at wireless.org.au
          Sent: Monday, January 02, 2012 11:41 AM
          Subject: RE: [MLB-WIRELESS] World Wifi record


          Hi Peter,

          

          

          If you’re talking about the grids with the gold anodized aluminum, 24db

          

          The ex galaxy ones with a width of around 600mm, they are 24db too.

          

          

          

          Kind Regards

          

          

          Peter

          

          

          ________________________________

                  From: Peter Berrett [mailto:vk3pb at optusnet.com.au]
          Sent: Monday, 2 January 2012 11:18 AM
          To: Peter Buncle; vk3jed at vkradio.com; melbwireless at wireless.org.au
          Subject: Re: [MLB-WIRELESS] World Wifi record

          

          By the way Peter

          

          What gain do those ex Galaxy slatted dishes have?

          

          cheers Peter

          

          

                  ----- Original Message -----

                  From: Peter Buncle <mailto:peter at nmc.net.au> 

                  To: vk3jed at vkradio.com ; vk3pb at optusnet.com.au ; melbwireless at wireless.org.au

                  Sent: Monday, January 02, 2012 9:54 AM

                  Subject: Re: [MLB-WIRELESS] World Wifi record

                  

                  Hi tony
                 
                  The north and south 2.4 antennas are facing wwn and wws. They are only 14db panels the range isn't suitable for record attempts.
                 
                  BUT I did pickup gho north in the past at the geelong side with the horizontal pol wave guide !
                 
                  So it does work well.
                 
                  Keep me informed of your schedule as I'm happy to help out with the melbourne region end.
                 
                  Cheers
                 
                  Peter
                 
                 
                 
                  ----- Original Message -----
                  From: melbwireless-bounces at wireless.org.au <melbwireless-bounces at wireless.org.au>
                  To: Peter Berrett <vk3pb at optusnet.com.au>; MW Wireless <melbwireless at wireless.org.au>
                  Sent: Mon Jan 02 07:33:14 2012
                  Subject: Re: [MLB-WIRELESS] World Wifi record
                 
                  At 11:02 PM 1/1/2012, Peter Berrett wrote:
                  >Just repeating an earlier question I put on the list.
                  >
                  >Does anyone know the exact angles that the north and south 2.4 mhz beams are
                  >pointing at GHO?
                  >
                  >What direction are they pointing?
                 
                  Does anyone know the noise floor there too?
                 
                  73 de VK3JED / VK3IRL
                  http://vkradio.com
                 
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