Timo, thank you for new information.
For me PGN 129284 is sufficient.
I have a Lowrance HDS9, and I checkt how PGN´s 129284, 129285, 130074 are working:
129284: HDS is sending this, as far as I navigate to a waypoint. A route is not necessary.
130074: is send automatically, as far as I save a new waypoint.
129285: is send automatically, as far a route is active.
