Livorsi GPS problem

[The Bird]

I have a Livisori GPS Speedo. It's three years old. Three wires to the antenna. It only works to 40 miles anchor and then it goes hay wire. The antenna is about the size of a silver dollar. Does any one know how I can fix it?

[Fish]

might check this out. http://www.screamandfly.com/showthread.php?209283-GPS-Antenna-ONLY-104.95 there are a lot of threads on the livorsi gps battery problems in the search function.