Raymarine C80 question

[mlbaker]

I just had my C80 installed and while I am out and running the boat tracks fine on the chart but the speed is not showing up. I set the databar to display speed but it is just reading 0.0 knts the entire time. Is there a certain setting I need to change? Possible a problem with the gps antenna? Thanks for any help in advance!

Mike

[SeaSwirler23]

In data terms, "speed" comes from a padllewheel transducer, normally through a sounder module on a C-Series. The GPS speed yopu are looking for is SOG (Speed Over Ground), and that is what you should set your data window to display.

[mlbaker]

Thanks, I will give that a shot!