Yes. You can block it with a terashield - a wire mesh that's grounded. They sell a very "soft" stainless steel wire mesh where the wires are so small it almost feels like cloth. Get some of that and attach a wire to it and take it to the ground on your outlets. Research a faraday cage. To really insulate you, go to Home Depot and buy metallic paint - the kind that a magnet can stick to and paint all your room walls with it and then bond it via a wire to the ground on your outlet. If you install the wire mesh on the windows as described, you will be in a faraday cage.