[MLB-WIRELESS] World Wifi record

Tony Langdon, VK3JED vk3jed at vkradio.com
Wed Dec 28 18:26:16 EST 2011

At 02:02 PM 12/28/2011, Peter Berrett wrote:
>Thanks Mike
>I am no expert in this field but it seems to me that your 
>calculations are predicated on a line of sight situation. I am well 
>aware of the curvature of the earth and understand why the 
>Venzualans and Italians have something of an advantage here with 
>their high mountains.
>There is a thing called tropospheric ducting which, if the 
>conditions are right, turns the atmosphere into a waveguide and 
>allows signals to propogate over distances greater than line of site.

Time to bring out the Hepburn index, and a reminder that summer is 
the peak season for tropospheric activity.  I'm not sure I'd use GHO, 
it is at a severe disadvantage due to the high noise levels around 
Melbourne.  Find some quiet spots with good views. :)

73 de VK3JED / VK3IRL

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