If line of sight is not presently feasible encrypted tunnels should bridge the gap or even physical carriers could use flash memory on phone or ssd<div><br></div><div><a href="http://en.wikipedia.org/wiki/Sneakernet">http://en.wikipedia.org/wiki/Sneakernet</a> <br>
<br><div class="gmail_quote">On Sat, Oct 20, 2012 at 7:53 PM, Hans-Christoph Steiner <span dir="ltr"><<a href="mailto:hans@guardianproject.info" target="_blank">hans@guardianproject.info</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im"><br>
<br>
On 10/20/2012 11:49 AM, Henning Rogge wrote:<br>
> On Sat, Oct 20, 2012 at 5:38 PM, Gui Iribarren <<a href="mailto:gui@altermundi.net">gui@altermundi.net</a>> wrote:<br>
>> On Sat, Oct 20, 2012 at 11:49 AM, Hans-Christoph Steiner<br>
>> <<a href="mailto:hans@guardianproject.info">hans@guardianproject.info</a>> wrote:<br>
>>> On 10/20/2012 02:29 AM, Henning Rogge wrote:<br>
>>>> On Sat, Oct 20, 2012 at 6:54 AM, Paul Gardner-Stephen<br>
>>>> <<a href="mailto:paul@servalproject.org">paul@servalproject.org</a>> wrote:<br>
>>>>> WiFi long-shots from USA->Alaska->Russia->Europe should be possible?<br>
>>>><br>
>>>> Only with really high towers or a relay station on the island in the<br>
>>>> Bering Strait.<br>
>>>> (its nearly 100 km of water if you don't have a relay on the island)<br>
>>><br>
>>> 125 miles/200km with 300mW wifi:<br>
>>><br>
>>> <a href="http://boingboing.net/2005/07/31/defcon-wifi-shootout.html" target="_blank">http://boingboing.net/2005/07/31/defcon-wifi-shootout.html</a><br>
>><br>
>> Ermanno Pietrosemoli et al [0] actually did a ~400km link on 2.4ghz,<br>
>> but those distances (including the defcon wifi shootout), are only<br>
>> possible because of the heights provided by generous mountains.<br>
>><br>
>> [0]: <a href="https://interred.wordpress.com/2007/06/18/ermanno-pietrosemoli-has-set-a-new-record-for-the-longest-communication-wi-fi-link/" target="_blank">https://interred.wordpress.com/2007/06/18/ermanno-pietrosemoli-has-set-a-new-record-for-the-longest-communication-wi-fi-link/</a><br>
><br>
><br>
> Exactly... I was more worried about "curving of Earth" than about power.<br>
<br>
</div>If you're talking Alaska to Russia, you only need 40km links because there is<br>
an island in between, as well as a 600m peak right on the shore:<br>
<br>
<a href="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" target="_blank">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</a><br>
<br>
And if you really need height, other parts of Alaska have 6000m peaks like Denali.<br>
<span class="HOEnZb"><font color="#888888"><br>
<br>
<br>
.hc<br>
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</div></div></blockquote></div><br></div>