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And have since the 70s( http://support.radioshack.com/support_tutorials/gps/gps_tmline.htm http://support.radioshack.com/support_tutorials/gps/gps_tmli... ). Pr

by nullc 12y ago

And have since the 70s( http://support.radioshack.com/support_tutorials/gps/gps_tmline.htm http://support.radioshack.com/support_tutorials/gps/gps_tmli... ). Pretty wild.