Originally Posted by wduncan50
I have a Raytheon RC420 chart plotter that powers up but gets no GPS fix on the sats. I checked the connections on the unit to the GPS antenna and they look good. Do I need a new antenna or is there something else I need to check?
Does that model have a an ability for software upgrades and if so have you applied them? GPS satellites went through a change and during the summer of last year, most all Raymarine products had to be updated....you can get the updates if they apply by merely going to the raymarine site and register your product....
If all is connected odds are it is because the software needs to be updated...