This is a tutorial on how to create a custom Garmin map by using google earth to create a KMZ file with an image overlay. Then take the KMZ file and drop it into your CustomMaps folder on your Garmin device. In this example, I am using a GPSMAP 62s. Compatible models are: Dakota Oregon Colorado GPSMAP 62 series GPSMAP 78 series Other notes: the size of the image overlay should be up to 2000×2000, otherwise you will have problem with google earth. Also resize the images to 155 dpi if they are higher. Don’t need to increase from 72dpi up, as that won’t make a difference and only will increase file size.
Here’s an area Apple iPhones have nothing on the Thunderbolt: REAL GPS Not only was the HTC able to get a weak cell signal from 45000 ft in the air, its real GPS chip was able to get enough of a satellite location fix that it could match where we were flying!