On 6 Oct 2006 10:08:22 -0700, "Robert M. Gary"
wrote:

It does. There are two GPS units, with two antenna. The antenna are
located in the base of the comm antennas. (some students get confused
by the GPS antenna behind those, but its just for XM weather).

Actually, on the newer installs the LH antenna fin is an
XM/COM/GPS-in-one. RH fin is just COM/GPS and the only other
protuberance on the upper center fuselage is the OAT probe.