This might be more a Google Earth issue, but here goes.

I've paired my Mountain Lion laptop with a Garmin Bluetooth GPS, and can confirm getting NMEA data over the serial channel with

cat /dev/tty.GarminGPS10-Gps10

However, when I try to connect to the GPS inside Google Earth, I see the message

Reading /dev/cu.Bluetooth-PDA-Sync

and nothing happens. How do I point Google Earth to the proper tty?

I've tried:

  • removing my Android phone from know Bluetooth devices
  • reinstalling Google Earth and reinstalling

1 Answer 1


Solved it.

Seems Google Earth cycles through all available COM ports until it finds a feed. Left it on for a while and it connected to the correct port eventually

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