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Hi,<br>
<br>
Yesterday I backed KiwiSDR, <br>
<br>
<a class="moz-txt-link-freetext" href="https://www.kickstarter.com/projects/1575992013/kiwisdr-beaglebone-software-defined-radio-sdr-with">https://www.kickstarter.com/projects/1575992013/kiwisdr-beaglebone-software-defined-radio-sdr-with</a><br>
<br>
<p style="margin: 0px 0px 20px; padding: 0px; border: 0px;
font-style: normal; font-variant: normal; font-weight: normal;
font-stretch: inherit; line-height: 24px; font-family: 'Helvetica
Neue', Helvetica, Arial, 'Liberation Sans', FreeSans, sans-serif;
font-size: 16px; vertical-align: baseline; color: rgb(15, 33, 5);
letter-spacing: normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space: normal;
widows: 1; word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);">"KiwiSDR is a
software-defined radio (SDR) covering shortwave, the longwave
& AM broadcast bands, various utility stations, and amateur
radio transmissions, world-wide, in the spectrum from 10 kHz to 30
MHz. The KiwiSDR is a custom circuit board you connect to an
inexpensive <a href="http://beagleboard.org/BLACK"
target="_blank" style="margin: 0px; padding: 0px; border: 0px;
font-style: inherit; font-variant: inherit; font-weight:
inherit; font-stretch: inherit; line-height: inherit;
font-family: inherit; font-size: 16px; vertical-align: baseline;
color: rgb(0, 160, 255); text-decoration: none;">BeagleBone
Black</a> or<span class="Apple-converted-space"> </span><a
href="http://seeedstudio.com/wiki/BeagleBone_Green"
target="_blank" style="margin: 0px; padding: 0px; border: 0px;
font-style: inherit; font-variant: inherit; font-weight:
inherit; font-stretch: inherit; line-height: inherit;
font-family: inherit; font-size: 16px; vertical-align: baseline;
color: rgb(0, 160, 255); text-decoration: none;">Green</a> computer.
Add an antenna, power supply, internet connection, then install
the software package to be running in minutes. An HTML5-capable
browser and internet connection will let you listen to a public
KiwiSDR anywhere in the world. Up to four people can listen
simultaneously to one receiver — each listener tunes
independently."<br>
</p>
<p style="margin: 0px 0px 20px; padding: 0px; border: 0px;
font-style: normal; font-variant: normal; font-weight: normal;
font-stretch: inherit; line-height: 24px; font-family: 'Helvetica
Neue', Helvetica, Arial, 'Liberation Sans', FreeSans, sans-serif;
font-size: 16px; vertical-align: baseline; color: rgb(15, 33, 5);
letter-spacing: normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space: normal;
widows: 1; word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);">A few prototypes are in the
wild... If you want to listen in Tauranga, click on
<a class="moz-txt-link-freetext" href="http://kiwisdr.com:8073/">http://kiwisdr.com:8073/</a> (4 users at a time).<br>
</p>
<p style="margin: 0px 0px 20px; padding: 0px; border: 0px;
font-style: normal; font-variant: normal; font-weight: normal;
font-stretch: inherit; line-height: 24px; font-family: 'Helvetica
Neue', Helvetica, Arial, 'Liberation Sans', FreeSans, sans-serif;
font-size: 16px; vertical-align: baseline; color: rgb(15, 33, 5);
letter-spacing: normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space: normal;
widows: 1; word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);">The board itself is a
14-bit ADC running at 66MS/s, and a 2-bit ADC for the GPS stream.
It talks through to the BeagleBone through SPI to transfer the
spectrum waterfall and audio output. Of course being open source
you can download your own deisgns to the FPGA I am just doing some
numbers on what would be invoved in putting this off grid.<br>
</p>
<p style="margin: 0px 0px 20px; padding: 0px; border: 0px;
font-style: normal; font-variant: normal; font-weight: normal;
font-stretch: inherit; line-height: 24px; font-family: 'Helvetica
Neue', Helvetica, Arial, 'Liberation Sans', FreeSans, sans-serif;
font-size: 16px; vertical-align: baseline; color: rgb(15, 33, 5);
letter-spacing: normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space: normal;
widows: 1; word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);">I haven't looked much at
SDR, but it seems to be the least expensive platform I've seen
that gives direct access to the ~0 to 30MHz spectrum<br>
</p>
<br>
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