1987 Engel MRF40 been in a shed since 1989...

[roKWiz]

Originally Posted by MuzzMelbourne

There must be some little capacitor/RF choke/coil DIY gizmo that old 'hacks' can knock-up to solve the issue though...?

For the most part yes, but on water seems to be troublesome. I've tried most of those gizmo's hack you speak of. The little toroids work the best in my application but still occasional interfered with the marine radio. Turn the frig off while using the radio was the easiest hack.

https://www.jaycar.com.au/l8-25x15x1...-of-4/p/LO1234

The boat being steel probably doesn't help either.