Tom Doyle W9KE has developed a Windows satellite tracking App that reproduces the graphical display of the original cardboard OSCARLOCATOR

Most tracking programs use an equirectangular projection which is by far the easiest to program and shows the entire Earth at once. A 3D model is often used which helps visualize orbits but does not show the entire Earth at the same time.

Tom remembers having an easier time visualizing the orbits back in the day (1970's) when amateurs used cardboard Oscar Locators with overlays. This Windows program lets you visualize orbits Oscar Locator style.

You can download the OSCAR Locator - http://www.tomdoyle.org/OscarLocator

40 Years of Tracking OSCAR-7- http://amsat-uk.org/2014/11/09/40-years-tracking-oscar-7/