This external GPS antenna is suitable for all WAAS panel-mount GPS systems with an ARINC 743 footprint (square shape antenna). It provides excellent reception and attaches through the fuselage via screw mount.
Garmin GA-36 WAAS GPS Antenna, Square
Garmin part number: 013-00244-00
This antenna has a TNC female connector. Use a TNC male (SA-1001) connector to mate.