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</o:shapelayout></xml><![endif]--></head><body lang=PT link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'>Raspberry Pi* used for Amateur Radio<o:p></o:p></span></p><p><span style='font-size:11.0pt;font-family:"Tahoma","sans-serif"'>Informações sobre o computador Linux de baixo custo (~15 UKP ou 25USD) da Fundação Raspberry Pi para o ensino de programação de computadores para as crianças. A Fundação Raspberry Pi é uma instituição de caridade registrada no Reino Unido (Número de Registro 1129409), que existe para promover o estudo da ciência da computação e assuntos relacionados, especialmente ao nível escolar, e trazer de volta o aprendizado de computação como diversão. Esperamos que esse computador tenha muitas outras aplicações, tanto no mundo desenvolvido quanto no mundo em desenvolvimento. <o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'>AMSAT-UK and AMSAT-NA member Dave Johnson, G4DPZ, has been using the Raspberry Pi to run amateur radio satellite software.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'>The £22 Model B Raspberry Pi is a credit-card sized ARM-based computer board that plugs into a TV and a keyboard. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'>Based around the 700 MHz ARM11 processor the board has 256 MB SDRAM, two USB ports, Ethernet with composite and HDMI video outputs. Low-level peripherals are GPIO pins, SPI, I²C, I²S and UART.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'>It was developed in Cambridgeshire by a UK registered charity, the Raspberry Pi Foundation, which exists to promote the study of computer science and related topics, especially at school level, and to put the fun back into learning computing.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'>Dave's Raspberry Pi runs Debian Squeeze with Xwindows and is accessed using VNC over his shack network.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'>The first amateur radio application he got running was GPredict (thanks go to Alex Csete OZ9AEC for making such a portable implementation). Updates of Keplerian Two Line Elements (KEP / TLE) from the Internet worked perfectly.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'>GPredict free real-time satellite tracking and orbit prediction<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'><a href="http://gpredict.oz9aec.net/">http://gpredict.oz9aec.net/</a><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'>Raspberry Pi computer now on sale<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'><a href="http://www.southgatearc.org/news/march2012/raspberry_pi_computer_now_on_sale.htm">http://www.southgatearc.org/news/march2012/raspberry_pi_computer_now_on_sale.htm</a> <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'>AMSAT-UK<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Tahoma","sans-serif"'><a href="http://www.uk.amsat.org/">http://www.uk.amsat.org/</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><o:p> </o:p></span></p></div></body></html>