Who says DX means out of the country? From the QRZ dictionary: "Long distance; making contacts over long distances. For HF contacts, "DX" is typically considered as such if the station contacted is outside of your country. In some other cases, making a contact over what is considered extremely long distances (for the conditions and band) can be considered "DX" (i.e., a QSO from one end of a state to another, on 2 meters simplex, can be considered "'DX")." So if I was in Key West and calling CQDX and got an answer from someone in Washington State, that works for me.