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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I have a Thunderbolt on my balcony; using Lady heather I can confirm that my house hasn’t moved by more than a few cms in the last year </span><span style='font-size:11.0pt;font-family:Wingdings;color:#1F497D'>J</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Simon Brown, HB9DRV<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><a href="http://sdr-radio.com"><span style='color:blue'>http://sdr-radio.com</span></a> <a href="http://dit-dit-dit.com/"><span style='color:blue'>http://dit-dit-dit.com</span></a><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>You are standing at the end of a road before a small brick building. Around you is a forest.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>A small stream flows out of the building and down a gully. The sunspot count is 285.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Werner Karn [mailto:werner.karn@googlemail.com] </span><o:p></o:p></p><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>when I ran 3 Trimble Thunderbolts against each other on different antennas their GPS 10 Mhz phases driftet appr. 0,3 deg per second. So I'm not sure if synchronisation of receivers at different locations with time stamped data would work via Internet as phases could differ +/- 20 deg over time before turning direction.<span style='font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p></div></body></html>