We've checked the resistor and it gives 50 ohms, as for the voltage since it was marine we are assuming 12 volt, but it could be 6 or 24 as well. AC is something we've been thinking about, to vibrate the disc back and forth.
We hooked it up to my car battery and tested each end. I was hoping that we'd hear the thunk and just have to adjust the nut on top to get the horn to go, but I think I'll take the electrical apart and go through everything. It's been at least a couple decades since it's worked.
I recently bought a bronze horn from a fellow who said it came off of our local Coast Guard station in Bay City, Ore. I can't find any information on it, and I'd like to get it working. I'm hoping somebody will recognize the manufacturer.
