<div dir="ltr">2000 km DX using the Raspberry Pi<p><strong>Eddie G3ZJO</strong> used the 10 mW of RF that can be generated from the Raspberry Pi computer board to get over 2000 km on the 7 MHz band.<br><br> The <a href="http://www.raspberrypi.org/" target="_blank"><font color="#0066cc">Raspberry Pi</font></a> board can operate as a WSPR transmitter covering LF, HF and VHF up to 250 MHz.<br>
<br> Eddie G3ZJO connected the board's GPIO port via a low pass filter to a 40m Doublet for the 7 and 14 MHz bands or to a small Marconi inverted L just 6m up 6m out for the 472 kHz band which he estimates generates an ERP of 0.5 microwatts.<br>
<br> Among the stations who received his WSPR signal were: <br><br> LA9JO JP99gb 2124km on 7MHz<br> LY2BOS KO24or 1736km on 14MHz<br> IK1WVQ JN44cb 1133km on 7MHz <br> G4KPX JO02dj 80km on 472kHz <br> G3XIZ IO92ub 46km on 472kHz<br>
<br> The PE1NNZ code and binary to turn the Raspberry Pi into a WSPR LF/MF/HF/VHF transmitter is available at<br><a href="https://github.com/threeme3/WsprryPi" target="_blank"><font color="#0066cc">https://github.com/threeme3/WsprryPi</font></a><br>
<br> Raspberry Pi as WSPR transmitter up to 250 MHz<br><a href="http://www.southgatearc.org/news/march2013/raspberry_pi_as_wspr_transmitter_up_to_250_mhz.htm" target="_blank"><font color="#0066cc">http://www.southgatearc.org/news/march2013/<br>
raspberry_pi_as_wspr_transmitter_up_to_250_mhz.htm</font></a><br><br> Turning the Raspberry Pi into an FM Transmitter<br><a href="http://www.southgatearc.org/news/march2013/turning_the_raspberry_pi_into_an_fm_transmitter.htm" target="_blank"><font color="#0066cc">http://www.southgatearc.org/news/march2013/<br>
turning_the_raspberry_pi_into_an_fm_transmitter.htm</font></a></p></div>