<div dir="ltr"><div>Ora vivam.</div><div>Os meus testes nao deram tanto, so consegui 942 Km.</div><div><br></div><div>Cumprimentos a todos desde JN49MT</div><div>DM3FG / CT7ABA</div><div><br></div></div><div class="gmail_extra">
<br><br><div class="gmail_quote">2013/3/30 Joćo Costa > CT1FBF <span dir="ltr"><<a href="mailto:ct1fbf@gmail.com" target="_blank">ct1fbf@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<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>
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