This will allow you to use a WiFi only iPad for navigation. Much more robust GPS as well.
Dual Electronics XGPS150A Multipurpose Universal Bluetooth GPS Receiver with Wide Area Augmentation System and Portable Attachment Dual Electronics $99.99 $84.95 Tom B Typoed from my iPhone Tom Buscaglia Alera 1990 C&C 37+/40 Vashon Island WA O 206.463.9200 C 305.409.3660 Skype - thombusc
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