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<p class="MsoNormal"><span lang="EN-US">Raspberry Pi as WSPR transmitter up to 250 MHz<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Guido PE1NNZ has released code that he says enables the Raspberry Pi to operate as a WSPR transmitter at HF and VHF.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Guido has modified the WsprryPi code originally developed by Dan Ankers MD1CLV. He says the Raspberry Pi requires just a Low Pass Filter (LPF) and antenna connected to the GPIO4 pin in order to function as a WSPR transmitter.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The PE1NNZ code and binary is available at
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><a href="https://github.com/threeme3/WsprryPi">https://github.com/threeme3/WsprryPi</a>
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Turning the Raspberry Pi into an FM Transmitter<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><a href="http://www.southgatearc.org/news/march2013/turning_the_raspberry_pi_into_an_fm_transmitter.htm">http://www.southgatearc.org/news/march2013/turning_the_raspberry_pi_into_an_fm_transmitter.htm</a>
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Dan Ankers MD1CLV WSPR <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><a href="http://m0xpd.blogspot.co.uk/2013/01/raspberry-whispers.html">http://m0xpd.blogspot.co.uk/2013/01/raspberry-whispers.html</a>
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">WSPR on the Raspberry Pi<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><a href="http://www.southgatearc.org/news/march2013/wspr_on_the_raspberry_pi.htm">http://www.southgatearc.org/news/march2013/wspr_on_the_raspberry_pi.htm</a>
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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