IRE TRANSACTIONS ON AEROSPACE AND NAVIGATIONAL ELECTRONICS December

SVEN H. DODINGTON

Chairman 1962-1963

LUDLOW B. HALLMAN, JR.

Vice Chairman 1962-1963

Sven H. Dodington (SM'58) was born in Vancouver, B. C.,Canada, on May 22, 1912. He graduated from Stanford University,Calif., in 1934. For the next six years he worked with Scophony Ltd.,London, England, on TV systems development, and in 1938 wasresponsible for the electrical design of some of the World's first high-definition theater TV projection receivers placed into commercialservice. He participated in the work of panel 8 (synchronization) of

the U. S. National Television Systems Committee, and was one ofthe early proponents of AFC horizontal synchronization. Since1941 he has been with ITT Federal Laboratories in New York and

Nutley, N. J.During World War 11, he specialized in deception-type radar

countermeasures and developed many of the "Moonshine" varietiesof such equipment, aimed against radars in the 60 to 600 Mc range.Since 1945 he has concentrated on radio aids to navigation, es-

pecially rho-theta systems at line-of-sight frequencies. He is par-ticularly associated with the development of crystal controlled

narrow spectrum pulse receivers and transmitters in the 1000-Mc

band and is the inventor of discriminator circuits which enable a low

duty-cycle wide-spectrum signal to be treated as a narrow-band

signal. He has participated in every frequency-assignment decision in

the 960 to 1215 Mc band since 1948 and devised the plan for pairingDME and VOR frequencies for the VORTAC system. In 1948 he

originated the constant-duty cycle DME transpondor with rotatingdirectional antenna, which eventually led to today's TACAN sys-tem. He has been active in the design of DME interrogators and

transpondors, the experimental NAVAR system of navigation and

beaconry, IFF interrogators, Tacan interrogators and transpondors,as well as the test equipment and system engineering associated withsuch projects. He holds some 40 patents in the field of television,countermeasures and radio navigation and has served on several

RTCA special committees, including SC-40 and SC-64. He presentedpapers at the 1949 and 1958 IRE National Conventions and at

numerous Section and PG chapter meetings. Hle was chairman of the

New York PGANE chapter 1960-1961. In 1958 he was appointedvice president at ITTFL and presently supervises a group devoted

to the development, design and manufacture of all types of equip-menit coming under the general heading of Avionics.

Mr. Dodingtoni is a member of the Air Force Association, the

Air Traffic Control Association, the Army Aviation Association, the

Institute of Navigation and the Navy League.

Ludlow B. Hallman, Jr. (J'27-A'29-SM'44-F'52) was born in

Sneads, Fla., on July 21, 1907. He received the B.S. degree in elec-

trical engineering in 1929, and the E.E. degree, in 1934, both from

the Alabama Polytechnic Institute, Auburn University, Auburn, Ala.

During the past twenty-five years, he has been concerned with

various research, development, testing and procurement programsof the U. S. Air Force in the Electronics Area. At present he holds

the position of Technical Advisor (Electronics), Directorate of Op-erational Support Engineering, Aeronautical Systems Division,Wright-Patterson Air Force Base, Ohio. He is the author of technical

papers covering various phases of communication and electronicenigineering which have appeared in the PROCEEDINGS OF THE IRE,the IRE TRANSACTIONS ON AEROSPACE AND NAVIGATIONAL ELEC-TRONIcS, electronics magazines and several governmental publica-tions. He holds two patents on computing devices.

Mr. Hallman is a member of Phi Kappa Phi, Tau Beta Pi, and

Eta Kappa Nu, and a recipient of the War Department (Departmentof Defense) Commendation for Meritorious Civilian Service.

194