Quote:
Originally Posted by WeFourSki
I like this idea a lot. Can you tell me why I would need cellular though?
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A lot of people don't realize that when using a smart phone, or tablet (no matter if WiFi or a Cellular version), that when using a 'GPS' map that the map itself is loaded online via the WiFi and/or Cellular connection.
If you use a map app that allows you to pre-load the map before you need it, then you are ok. But if you just try to bring up google maps (or something similar) and you are not in range of a cell tower (or a WiFi hotspot), then you won't have access to the maps that you need until you have a functioning data connection.
Often, if you use a dedicated marine type navigation app (such as the Navionics app), it will preload the map (Chart) for your area. You want to ensure to do this BEFORE you head out onto the water.
Then you only need to rely on the GPS signal for knowing your current location, of course this implies that your device actually includes a built in GPS receiver (luckily most Android devices have this. It seems some Apple WiFi only devices may not include a GPS receiver).
The dedicated Marine GPS devices such as a Garmin (or other brands) have the maps (Charts) preloaded internally, or via a plug in 'chip' (CF card, SD card, etc.).
Just keep in mind that the GPS receiver only provides your current location. The map itself is not downloaded via the GPS signal.
I hope this helps.