This is the printout of the secondary radar signal.
On the 0830 Position the Frankfurt Airport ( EDDF )
EDFE means Egelsbach Airport. The size of the screen 24X30 NM = 44X54 km
Watch the entire flightpath on GoogleEarth
This is a blowup and a printout with both, the primary and secondary signal.
The primary signal ( x with some missing links ) shows other VFR traffic too.
The flight was recorded on July 16, 2009 between 1210 and 1255 UTC