Seriously, like JB said, there isn't a charge to receive the signal.<br /><br />I have a low end Garmin GPS12 and it meets my needs although I would love one with more stuff on it. I use its tracking feature and it records where you have been and displays this as a map line on the screen. You don't get any land/water map features like a higher end charting GPS. You can use your PC to download waypoints to the GPS. You can also "mark" places of interests (good fishing spot, nice cove for lunch/swimming, etc). I do this and upload these points back to my PC. Then when heading to a lake, I download all the waypoints I want for the lake I'm headed to. I also upload the tracks I run to a PC program called Street Atlas just to be geeky and see where I boated on a map. Here's a closeup example of some tubing we did last Monday.
