He held a variety of positions, particularly in research and development, leaving the company in charge of a division.
[3] In 1929, Carter became the director of the radio division of United Research Corporation in New York, which was part of Warner Pictures.
In this position, he designed Brunswick radios, circuits, and receivers, and held several patents covering his work during this period.
[4] Carter was a member of the IEEE, American Radio Relay League, Sigma Xi, Eta Kappa Nu, and Tau Beta Pi.
[3] He was named an IEEE Fellow in 1949,[7] and received the IEEE Founders Medal in 1969 "for outstanding contributions to the electrical engineering profession and to the Institute of Electrical and Electronics Engineers through wise and imaginative leadership in the planning and administration of technical developments in electronics and telecommunications".