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</o:shapelayout></xml><![endif]--></head><body lang=PT link=blue vlink=purple><div class=WordSection1><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify'><a href="http://www.cqdx.ru/ham/wp-content/uploads/2012/02/WSPR-2010-11-10-KP4MD.jpg"><span style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#495357;mso-fareast-language:PT;text-decoration:none'><img border=0 width=644 height=384 id="Imagem_x0020_1" src="cid:image001.jpg@01CCF642.76EC16C0" alt="Descrição: http://www.cqdx.ru/ham/wp-content/uploads/2012/02/WSPR-2010-11-10-KP4MD-515x307.jpg"></span></a><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#444444;mso-fareast-language:PT'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify'><i><span lang=EN-US style='font-size:10.0pt;font-family:"Georgia","serif";mso-fareast-language:PT'>Advances in communications in recent years have come at a startling pace. In the old days, to communicate via radio one needed a good antenna, a selective receiver, and a powerful transmitter. While those items are still useful, today there is one more item required: good software. The “weak signal propagation reporter” software or WSPR (pronounced “whisper”) is one such advanced methodology. WSPR will astound you with its ability to communicate globally using very low power with received signals at or near the noise threshold. We are talking (in this context) about transmitting power levels of 500 milliwatts (mW) and often much less. One of my WSPR signals was received 1,600 Km away from my home while I was using only 10 mW of transmitter power and a short 24 foot length of wire. Low power WSPR signals were received on the same piece of wire from over 6,000 Km away.<o:p></o:p></span></i></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify'><i><span lang=EN-US style='font-size:10.0pt;font-family:"Georgia","serif";mso-fareast-language:PT'>By George Steber<o:p></o:p></span></i></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify'><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#444444;mso-fareast-language:PT'>If you are an educator, electronics experimenter or amateur radio operator this receiver is designed for you. It can be used in the classroom, on vacation or at home. Your WSPR receiver is simply connected to a wire antenna and a PC via the audio input. As it runs, stations from around the globe may be received. It is different than hearing commercial short wave broadcasting because you are receiving data of a scientific nature.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify'><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#444444;mso-fareast-language:PT'>A particularly nice feature of WSPR is that “receptions” (called spots) can be automatically down-loaded to a central database <a href="http://www.WSPRnet.org" target="_blank"><span style='color:#339966;text-decoration:none'>WSPRnet.org</span></a> and the results shown on a large map of the world. You will be participating in a global program and your data will be utilized by others. A flag will appear on the map to show your location and which stations you received. By this means, the exact transmitter locations can be determined and distances, headings and other information calculated and reported. The world map can be panned and zoomed to learn more about the geography and radio path used.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify'><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#444444;mso-fareast-language:PT'>Please see </span><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#339966;mso-fareast-language:PT'><a href="http://www.stellarwspr.com" target="_blank"><span style='color:#339966;text-decoration:none'>www.stellarwspr.com</span></a></span><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#444444;mso-fareast-language:PT'> for more information about WSPR program. You need to download the free WSPR software to use this board. Software is available from: </span><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#339966;mso-fareast-language:PT'><a href="http://www.physics.princeton.edu/pulsar/K1JT/" target="_blank"><span style='color:#339966;text-decoration:none'>http://www.physics.princeton.edu/pulsar/K1JT/</span></a></span><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#444444;mso-fareast-language:PT'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify'><a href="http://www.cqdx.ru/ham/wp-content/uploads/2012/02/26430692.jpg"><span style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#495357;mso-fareast-language:PT;text-decoration:none'><img border=0 width=643 height=480 id="Imagem_x0020_2" src="cid:image002.jpg@01CCF642.76EC16C0" alt="Descrição: http://www.cqdx.ru/ham/wp-content/uploads/2012/02/26430692.jpg"></span></a><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#444444;mso-fareast-language:PT'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify'><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#444444;mso-fareast-language:PT'>It’s a kit of parts for your own 20 meter WSPR receiver. This unit is for the 20 meter band (14 MHz), a good band for long distance communication. Kit comes with audio cable and USB power cable. No enclosure is included. No SMD parts are used.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify'><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#444444;mso-fareast-language:PT'>Kit is for intermediate to advanced builders. If you have never built a kit before or are not familiar with PCBs then do not order. Elsewhere on eBay we are offering a completely assembled unit. Partially assembled kits may not be returned.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify'><b><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#444444;mso-fareast-language:PT'>Please Note.</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#444444;mso-fareast-language:PT'> Customer supplies antenna. Usually a 5 meter (16.4 feet) antenna and a ground wire works well for the 20 meter band. Random wire antenna works too. Power is supplied to WSPR RK-20 via the USB on your computer via the cable supplied. If desired, a separate 5V power supply (for those who do not wish to use the USB port) can be used (not included). It uses the same USB cable supplied. Some USB ports are noisy and so a separate power supply can give improvement in reception. No enclosure is included.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify'><i><u><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#444444;mso-fareast-language:PT'>For International Customers:</span></u></i><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#444444;mso-fareast-language:PT'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify'><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#444444;mso-fareast-language:PT'>Shipping will vary depending on your location. Item ships via USPS in a small flat rate box.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify'><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#444444;mso-fareast-language:PT'>SKU RK-20 Price: $49.95 USD<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify'><b><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#444444;mso-fareast-language:PT'>Also available Kit’s:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#444444;mso-fareast-language:PT'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify'><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#444444;mso-fareast-language:PT'><a href="http://www.stellarwspr.com/parts#ecwid:category=2043181&mode=category&offset=0&sort=normal" target="_blank"><span style='color:#339966;text-decoration:none'>WSPR Receiver 30M Assembled RW-30</span></a> (Price: 69.95 USD)<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify'><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#339966;mso-fareast-language:PT'><a href="http://www.stellarwspr.com/parts#ecwid:category=2043180&mode=category&offset=0&sort=normal" target="_blank"><span style='color:#339966;text-decoration:none'>WSPR Receiver 30M KIT RK-30</span></a></span><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#444444;mso-fareast-language:PT'> (Price: 49.95 USD)<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify'><span lang=EN-US style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#444444;mso-fareast-language:PT'><a href="http://www.stellarwspr.com/parts#ecwid:category=1597741&mode=category&offset=0&sort=normal" target="_blank"><span style='color:#339966;text-decoration:none'>WSPR Receiver 20M Assembled RW-20</span></a> (Price: 69.95 USD) <o:p></o:p></span></p><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Fonte: SPARKY's Blog</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>