I'm still around. Just haven't been on the board for a while. Truck is a little worse for wear. Clear coat on roof and hood is peeling, needs an alignment and some other maintenance.
Here is the LOC that I have uses the same circuitry as their NE-774V LOC. So I would assume that the one I have has signal level permanently set at the maximum 9.5 Volts. You would have to contact them to confirm that.