Thank you very much! That's pretty much the same thing that I am slowly working towards. I'm glad that it can be done. I have the GX2150 and Standard Horizon's GPS connected right now, but my next step is to figure out exactly how to connect both to RJ45 cables and the box. After that, get the bluetooth transmitters. Lots to learn. Thanks again.
- john

Sorry about the delay responding - I didn't see your note until just now. The most complete and up to date description is probably over on SailNet. "Plan F" is what I actually installed (this site won't allow me to post links, so try pasting this into your location bar):

sailnet.com/forums/electronics/71615-sending-gx2150-ais-nmea-data-chart-plotter-over-bluetooth.html#post699309

If you read through the rest of the thread, you'll see some photos of the installation and screenshots of OpenCPN output.

I've seen your posts about your nav setup in several places and am very interested in something similar. Where can I go to find out what the latest version looks like?