[TABLECONTEXT] : callsign : 7DY | 7DY : purpose : Commercial | [TABLECONTEXT] : [title] : List of radio station callsigns in Tasmania | 7DY : area_served : Derby | 7DY : fate : Moved to Scottsdale and changed call to 7SD in 1954
A commercial callsign, 7DY served the Derby area in Tasmania but moved to Scottsdale and changed its call to 7SD in 1954.