We've all been there. And yes, there are a number of sources of noise that you'll have to look at, like battery chargers/inverters, any refrigerator or freezers, and anything with an electric motor. Ferrites will help but not cure all of the issues. I find myself turning off the fridge and freezer when I use the radio. My problem is I sometimes forget to turn them back on.
Gary can sell you what you need on the ferrites and give you some advice as to placement. His prices are on these items are close to the local ham shack, but you'll get great advice. He's not a fan of the GAM though, even though I've used both the GAM and the backstay antennas and I keep telling him there is no difference.