Thank you for visiting my website. Once you downloaded some files from here and you found they are useful, it would be very appreciative of you if you can leave a feedback for me on “here” (hopefully good ones, ). Simply click below “Leave a reply”, Basically, any feedback is welcomed. In addition, if you have any question on GNSS or this website, please feel free to reach me to discuss about it. Since 2006, there have been many from different countries. Please use this email: navleader@gmail.com; this feedback page has been active as of 28 Jul, 2011.