I plan on putting in a livorsi gps speedo. Can I use my chart plotter as the antenna for it? the gps is a lowrance elite and has a NMEA 0183 output.

only if the Livorsi can connect to the NEMA network and get the speed data from there, it won't get anything from the Garmin. Is the Lowrance elite a gps antenna or a display?

chartplotter

do you not have the antenna for the speedo?

As long as your GPS has the NMEA output it should work. I did this with my last boat with a Garmin GPS. You might have to go into the GPS configuration screens to enable the NMEA output. It was NOT enabled by default on my Garmin.

it has a built in antenna or external?

You should be able too. I did mine to a HDS-7 and it works great.

I have done it on a few boats and it worked fine. Hook it up and have somebody pull you around the block to check results.....nothing ventured nothing gained.

Yes it will work. You just have to set your NEMA output to on and the correct speed for the speedo. I did this with a Garmmin with an intrical antena and it worked fine. I then switched to a Northstar system, it still works the is just a little more lag time for the speed to be sent to my speedo.

internal antenna on chartplotter, no antenna for GPS speedo

http://www.lowrance.com/en-US/Produc...old-en-us.aspx