[Battlemesh] International links between Austria, Croatia, and Slovenia

[Hans-Christoph Steiner]

On 10/20/2012 11:49 AM, Henning Rogge wrote:
> On Sat, Oct 20, 2012 at 5:38 PM, Gui Iribarren <gui at altermundi.net> wrote:
>> On Sat, Oct 20, 2012 at 11:49 AM, Hans-Christoph Steiner
>> <hans at guardianproject.info> wrote:
>>> On 10/20/2012 02:29 AM, Henning Rogge wrote:
>>>> On Sat, Oct 20, 2012 at 6:54 AM, Paul Gardner-Stephen
>>>> <paul at servalproject.org> wrote:
>>>>> WiFi long-shots from USA->Alaska->Russia->Europe should be possible?
>>>>
>>>> Only with really high towers or a relay station on the island in the
>>>> Bering Strait.
>>>> (its nearly 100 km of water if you don't have a relay on the island)
>>>
>>> 125 miles/200km with 300mW wifi:
>>>
>>> http://boingboing.net/2005/07/31/defcon-wifi-shootout.html
>>
>> Ermanno Pietrosemoli et al [0] actually did a ~400km link on 2.4ghz,
>> but those distances (including the defcon wifi shootout), are only
>> possible because of the heights provided by generous mountains.
>>
>> [0]: https://interred.wordpress.com/2007/06/18/ermanno-pietrosemoli-has-set-a-new-record-for-the-longest-communication-wi-fi-link/
> 
> 
> Exactly... I was more worried about "curving of Earth" than about power.

If you're talking Alaska to Russia, you only need 40km links because there is
an island in between, as well as a 600m peak right on the shore:

http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=alaska&aq=&sll=40.697488,-73.979681&sspn=0.559109,0.810242&vpsrc=6&t=h&ie=UTF8&hq=&hnear=Alaska&ll=65.650349,-168.527527&spn=0.608111,1.620483&z=9

And if you really need height, other parts of Alaska have 6000m peaks like Denali.



.hc