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<div class="moz-cite-prefix">On 24/07/2013 11:04, David Osborn
wrote:<br>
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<p class="MsoNormal">Hi All,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I was just wondering what people have
deployed as a “node in a box” solution.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m toying with building a portable node
that can use either WiFi or 3G and which can be set-up in an
arbitrary location as required. The general idea being aimed
at emergency communications.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">So, what radios, what computer power (RTCM,
perhaps?), what power arrangements?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">73<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">David Osborn<o:p></o:p></p>
<p class="MsoNormal">GD4HOZ<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<br>
David,<br>
<br>
I would consider a thin client with 2.5" HDD running ACiD. They
require 12V and are easily powered by a SLAB or similar battery. The
RTL8188CU WLAN USB dongle also works with CentOS. My Wyse V90 has a
1GHz CPU and only had 256MB RAM (i've since upgraded it), and
initially ran ACiD with usbradio with no problems. For /P uses, I
have a Motorola HT-600E of which I have "hacked" the public safety
speaker/mic connector to connect to the TC. The cable has mini coax,
so I've connected a BNC socket to the end to connect to a better
antenna.<br>
<br>
Pretty "Quick N Durty", but it works. For the HT-600E, I've knocked
up a simple circuit involving a LM7810 regulator and a dead battery
pack (I've removed the cells and placed the circuit inside, so again
it can run from either 12V or a 13.8V PSU.<br>
<br>
I haven't done anything with the 3G dongle yet - I have one here,
but havent experimented!<br>
<br>
73<br>
<br>
J<br>
<br>
<br>
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