sentences:  He was appointed vice-president of the International Scientific Radio Union in 1934, chairman of the Radio Technical Commission for Aeronautics in 1941, chairman of the Radio Technical Commission for Marine Services in 1947, and chairman of Study Group 6 on Radio Propagation of the International Radio Consultative Committee in 1950.In 1932 Dellinger was awarded the Sc.D.degree from George Washington University, and in 1938 the IRE Medal of Honor "for his contributions to the development of radio measurements and standards, his researches and discoveries of the relation between radio wave propagation and other natural phenomena, and his leadership in international conferences contributing to the worldwide cooperation in telecommunications.