CONTRIBUTOKS TO THIS ISSUE 339 



R. A. Brockbaxk, B.Sc. in Engineering, London University 1922, 

 Ph.D. London University 1934. Dr. Brockbank joined the Research 

 Branch of the British Post Office in 1933 after 10 years in industry, in- 

 cluding dielectric research on the original transatlantic cable proposed 

 in 1928. He designed the repeater equipment for the first coaxial cable 

 system in England, 1938. During the war, he was engaged in coaxial 

 developments and on high power negative feedback wideband trans- 

 mitters. Following the war, he was associated with television trans- 

 mission over coaxial systems and with submerged repeater development. 

 In 1949 he specialized in this latter work, and since 1953 has been in 

 charge of research and development of submerged repeater sj^stems. 



J. W. Emlixg, B.S. in E.E., L'niv. of Pennsj'lvania, 1925; Develop- 

 ment and Research Department of American Telephone and Telegraph 

 Co., 1925-34; Bell Telephone Laboratories, 1934-. While at A. T. 

 et T. Mr. Emling was particularly concerned with transmission stand- 

 ards and with developing a sj'stem of effective transmission rating. He 

 continued this work at Bell Laboratories. In World War II he was con- 

 cerned with studies in the field of underwater acoustics. Subsequently 

 he has been concerned with systems engineering studies in the fields of 

 engineering economy, voice frequency transmission, rural carrier, radio 

 and television. One of his recent responsibilities covered the early trans- 

 mission and planning studies of the transatlantic telephone cable sys- 

 tem. He is currently Director of Transmission Engineering with re- 

 sponsibilit}' for the systems engineering aspects of exchange and long 

 distance transmission, carrier transmission over wire, telephone stations 

 and some forms of digital transmission. He is a member of the Acoustical 

 Society of America, A.I.E.E., Eta Kappa Nu and Tau Beta Pi. 



H. B. Fischer, B.S. in E.E., Univ. of Wisconsin, 1924; AVestern 

 Electric Company, 1924-25; Bell Telephone Laboratories, 1925-. 

 Mr. Fischer first worked on broadcast receivers, but after the develop- 

 ment of aircraft communication apparatus was started he engaged in 

 the design of aviation receivers. This was followed by work on various 

 types of aviation communication equipment, mobile radio equipment 

 for Bell Sj'stem use and radio receiving equipment for aircraft instru- 

 ment landing sj'stems. During the war he worked on various types of 

 electronic equipment for the Armed Forces. Later he worked on over- 

 seas radio telephone equipment, video transmission and testing ecjuip- 

 ment, and submarine communications .'systems. ^lore recently he has 

 worked on the transatlantic telephone cable project in connection with 

 the manufacture of cable in England. 



