TrekLawler
Member
One thing to be aware of before going the GDL 82 route is you may need a new transponder antenna. Install manual, page 4-4 lists the antennas that apparently perform well enough at the 3 frequencies, 978, 1030, and 1090. These are not the everyday mode C antennas that are tuned for the 1030 and 1090 and are likely already on your bird.
Stan,
just as an FYI, the list in the manual is just a reference for recommended antenna's that we have tested in the event that one might need to be replaced. the GDL 82 is designed and intended for use with current airframe systems in most cases and if you have a good, in working order transponder L band antenna, it will do just fine with no need for a replacement.