Since my last post, I have tried a number of things to try to isolate
the issue. I connected a new (non-electric) antenna, and grounded it
directly to the battery. I had the radio on w/lots of static and pulled
each fuse (including fuel pump) one by one. I had a jumper cable on the
battery ground and conected it to the alternator, engine computer,
sound amp and radio ground itself.

None of these made any improvement.

I'll try grounding the fuel pump as I could not easily locate it
yesterday.

As to other questions posted here...nothing else in the vehicle seems
to correlate with less or more static. But it is worse sometimes than
others. Which may be a result of the weather or other conditions making
for a better or worse ground connection somewhere.

I'll keep tyring!