 One of the most popular programs on Radio Sweden was "Sweden Calling DXers", founded in 1948 by Arne Skoog.He reasoned that shortwave listening or DXing was a very young hobby, and that by providing information in a weekly program for shortwave listeners about their hobby, Radio Sweden was teaching its own audience about how to listen better.While the first program was based solely on Arne's own listening, listeners were encouraged to write in with their own news, and soon virtually all of the program was based on listener's letters (an early example of interactvity).