Batboard

Thanks to everyone who contributed to the solution! Here's how it breakes down:
1. Lined the motorcycle radio housing with copper foil tape. No appreciable difference.
2. Installed Motorola DC Line Filter. 50-60% for the better.
3. Covered the ignition coils and wires with copper foil tape. 90-95% for the better.
4. Installed 32000 uf capacitors on the alternator, ignition module, and to ground from the DC source for the radio. 100% better.

There's still a minute amount of noise on VERY distant stations, but they aren't reliably copiable, anyway.

Thanks to all !

Jim

Can you post this resolution in your origional thread? This way the problem and the solution will go together. That way if someone searches - they have a chance of seeing the problem and the solution in one thread!

Thanks.

Once it's there, one of us will can this post.

-Alex

Just watch the covered wires in the water- many plug wires will short to ground once wet of they are covered.
Give them the "spray test"