Did not make it myself, only host it for someone else. I don’t have sat-nav myself so don’t know how it works (assuming it does :D). The data is probably slightly outdated as the old Kaagbaan spot is still indicated. However, as you already know you can still spot about 1km down the road from the old spottersite.

http://www.schipholspotter.com/files/EHAM-Schiphol.zip