My Hummel 1915cc engine with a Slick 4220 mag makes my hand held radio reception awful! Best I can tell there is NO RF suppression in the ignition system at all.

The electronic secondary hardly allows any static. So my focus is on the mag side of things.
I have the P lead from the mag in a shielded cable. The shielding is attached at the mag end. The P lead goes to a panel mounted toggle switch. The switch then closes to a nearby ground to stop the engine.

Has anyone used low resistance suppression wires with this mag to reduce the RF noise? The wire I'm looking at measures at 201 Ohms per foot. What spark plugs do you use? Any real world experience feedback would be GREAT!

Thanks!

Dave