Nikon GP-1A GPS module for select Nikon DSLRs at Crutchfield
Rainy Day Magazine :Nikon GP-1 Installation by Wan Chi Lau, April 3, 2009
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Alternative GPS module solution for Nikon cameras: di-GPS Eco Pro-S and Pro-F - Nikon Rumors
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Unleashed GPS Bluetooth Geotagging Solution for Nikon DSLRs - Terry White's Tech Blog
New Nikon DSLR Compatible GPS Units Now Available
Nikon D7000 DSLR Camera
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