DDXA W5RU history Delta DX Association DX one aspect of the hobby of amateur Ham radio is an abbreviation for distance and is used as a noun DX distant station DXer one who pursues DX and a verb DXing the pursuit of DX radio contacts. The enthusiasm of DXers is exemplified by the frequent DXpeditions by Hams in which operators venture forth to some corner of the globe that may be uninhabited lacking Ham radio activity or just an interesting place to go for the primary purpose of providing the rest of us with radio contacts. Some are true expeditions in the classical sense in which equipment shelters generators and supplies must be carried in at great personal cost and risk. Visit our pages for more on Ham Radio DXing.