An article from a website that is owned and maintained by a fellow Radio enthusiast (Broadcast, DX, and Amateur/Ham) about mitigating interference as far as AM/Mediumwave and Shortwave signals are concerned.

I, the owner of this very Blog; already knew that buildings can obstruct AM/Mediumwave and Shortwave signals, and can hinder a person and his or her Radio Receiver’s ability to receive any AM/Mediumwave and Shortwave signals if buildings are in the way.

I am relaying this information about Radio Interference to those of you who are far less knowledgeable about Radio, Radio Engineering, and the Radio Spectrum than people such as I, the owner of this very Blog; and the owner of the other website both are.