Originally Posted by westwinds
I do not know anything about this sort of thing, but found this and thought it might apply: AS-402
It is not the first thing to try. This is designed for some very specific and unlikely problems.
Your antenna sounds ok assuming you have it insulated everywhere except the receiver input.
First thing to try is removing the ground wire to keel
bolt. It is almost certainly not helping and could be a source of noise.
Second thing is to turn off absolutely every electronic thing in the boat
except the receiver. That means everything including the DC battery monitor
, lights, windlass
breaker, AC mains. Everything. Then check reception
. If good then start turning things back on and see what creates interference
. This experiment
is best done well away from the dock
and other boats.