Originally Posted by Chris
The GPS is in the unit. It should find you wherever you are but it can take a few minutes to register all the relevant satellites. It probably won't work indoors...
My LM420 works inside my "house roof" style garage! (granted with 1/2 mile or so error, but I get a signal!) If you are indoors and first switch - on I'd leave it by the window as mine even knowing where it was can take a good few mins to figure out it hasn't moved if , for example I am using it to check a tide or something.
But any "cold start" on a GPS takes a good few mins as the reciever has a load of info do download off the satellites before the position signals make any sense to it. Once that is done the almanac is in memory and it' s a relatively simple case of find satellites, get signals & do the maths. WhenI took my Garmn handheld abroad it took a good 15 mins to figure out where it was.
Back to the maps, assuming a similar setup o nthe new ones to my old LM if you dive into the "maps - setup" menu, you have to select the one you want to use. (may have renamed it since mine was built) If you had bought the "UK" navonics gold you would see a list of areas to choose from.
Also it will normally show its last known position. If, however, you have scrolled the map you may need to press"exit" to get back to your "live" position.