[I Buried My Guns]

You can use any microwave, but it must be grounded. That means a wire affixed to the microwave's mesh and running to a pipe that goes under the ground.

Thus, the motorhome may not work.

If you Google "Farady Cage" and "EMP" you will get a lot more info than I can provide.

[netmilsmom]

Actually, I was considering hanging a chain off the ball of the camper. Wouldn’t that be a ground?

I thought I remembered reading that hanging a chain from your car can give you a fifty/fifty chance of having the car survive.