Re: GPS Unit constantly "Acquiring Satelites"
The time for a GPS receiver to acquire a position fix varies. Modern GPS receivers often have their own energy storage device, a large capacitor, which retains information about the satellite constellation and the position of the receiver. If a GPS receiver does not have a sense of its approximate location, the current time, and the orbital position of the satellites, the time to initial position fix can be much longer. However, no modern receiver should take more than five minutes to acquire a position fix.
If your GPS receiver is not able to acquire a position fix after five minutes, the problem is not related to missing ephemeris data or being unaware of its present coarse position. There is more likely a malfunction in the GPS receiver or some interference in your location. To rule out interference, try another GPS receiver in that location.