CDJ is a line of CD players from Pioneer DJ that allow analogue control of music from CDs, usually using an emulated vinyl control surface. The term "CDJ" (Compact Disk Jockey) is derived from the first CD player, the CDJ-300 prototype from Pioneer Electronics in 1992.
The Pioneer CDJ-400, CDJ-800, CDJ-1000 (including the Mark 2 and Mark 3), CDJ-900, and the CDJ-2000 have vinyl mode and a virtual platter that allows the operator to manually manipulate music on a CD as if it were on a turntable, while other models (CDJ-100S, CDJ-200) do not feature vinyl and scratching capabilities, and are essentially CD players. While still having the options to manipulate the CD, they do not feature the vinyl modes of the other models.
The CDJ-1000 was the main model to find mass usage in both clubs and amongst domestic users, especially from the second version of the model, the CDJ-1000MK2.
One model, the CDJ-400, incorporates the main new feature of having a USB input and control abilities on the player. However it is not as functional as the CDJ-1000MK3, hence the number 400 being assigned to the machine.
Strathmore (D.J. Murray) Airport, (TC LID: CDJ5), is located 8.3 nautical miles (15.4 km; 9.6 mi) west northwest of Strathmore, Alberta, Canada.
Clearwater Aerodrome (TC LID: CDJ4), is a private airfield run by the Irving Oil company in Clearwater, New Brunswick, Canada.