Garmin AERA 660 Pilot's Manual page 162

Appendix D
Connecting/Pairing GTX 345 via Bluetooth:
1) Ensure the GTX 345 is turned on. From the Main Menu, touch Tools >
Setup > Bluetooth > On.
2) Touch Not Paired next to the GTX Device. A Bluetooth Passkey window
will open.
3) Touch OK. The GTX 345 is now connected.
NOTE: Only one Bluetooth connection is allowed at a time.
USING AN EXTERNAL GPS ANTENNA (OPTIONAL)
The optional GA25 external antenna can be used. Connect the antenna to the
connector located on the left side of the unit.
External Antenna
Connector
146
aera/GTX 345 Bare Wire Installation
External Antenna Connector
Garmin aera 660 Pilot's Guide 190-02017-20 Rev. A