ARDF (Amateur Radio Direction Finding) is part of Amateur-radio hobby. It developed, expanded through time, and now it is regulated as both sport and engineering activity. ARDF is very good combination of sports and engineering. Through technical abbilities amateur-radio is showing his abbilities, technique and resourcefullnes, and through his sports abbilities his fitness condition. The high level of fitness condition that is necessary for ARDF competitor led a number of countries and amateur radio associations to call amateur radio direction finding sport discipline.