Comment Re:What an arrogant ass... (Score 1) 195
5 Years, try more 15. I know many GPS installations that are 10-15 years old. When I was school in 2002, a friend studying Geology went out into Rockies to install GPS units in mountains to measure drift of tectonic plates. They were replacing GPS Units that had been in place since 1993 and units they were installing had planned service lifetime of 10 years. Many Aircraft GPS Recievers are 10 years old as well and many might remain in place for another couple of years if they are working. In more expensive systems, GPS receiver part is separate from navigation system which generally more modular.