Excerpted from the IRE Professional Group on Radio Frequency Interference Newsletter dated “Number 6 – July – 1959”

A two-day Radio Frequency Interference Seminar, sponsored by the IRE Professional Group on Radio Interference and the Air Research and Development Command of USAF, was held in New York on June 15 and 16. This seminar was attended by a total of 250 radio interference engineers, together with representatives of Rome Air Development Center, Wright-Patterson Air Force Base, Bureau of Aeronautics, U.S. Navy, U.S. Army, Air Research and Development Command of the U.S. Air Force, and the Federal Communications Commission.
The first day was an unclassified session held at the Park Sheraton Hotel. The seminar chairman, Mr. S. J. Burruano, of the Filtron Company, arranged for a most informative program which included a morning session of interference predictions.
The afternoon session, with Mr. E.W. Chapin of the Federal Communications Commission as moderator, had a national panel of interference measurement experts on the stage. The interference measurement forum started off with a brief talk by several of the panel members who provided information on the latest interference measurement techniques. The seminar was then opened to the floor for questions from the assembly. Members of the panel were R. J. Farber of Hazeltine Research Corp., A. L. Albin of Filtron Company, L. B. Wilson of Sperry Gyroscope Company, R. B. Schulz of Armour Research Foundation, A. T. Parker of Stoddart Aircraft Radio Company, M. T. Harges of Empire Devices Products Corp., A. H. Sonnenschein of Polarad Electronics Corp., C.S. Vasaka of U. S. Naval Air Development Center, and S. Skolnik of Wright Patterson Air Force Base.
The classified session of this seminar, held on June 16 at the Main Auditorium of the Albert Einstein College of Medicine and sponsored by the Air Research and Development Command of the U.S. Air Force, was the first classified seminar ever held on the subject of radio interference.
Mr. Leonard Milton, Executive Vice President of the Filtron Company and Vice Chairman of the Professional Group on Radio Frequency Interference, introduced the keynote speaker, Colonel C. H. Lewis, Director of Electronics, Headquarters, ARDC, Washington , D. C. Colonel Lewis, in a brilliant address on the subject of radio interference, brought out many of the problems of the Air Force due to radio interference and stressed the recommendation that radio interference be considered in the initial stages of design of all new weapon system programs. He also stressed the requirement that throughout the entire program, continued top level radio interference efforts be continued so as to provide a weapon system that can operate without malfunction in the electronic environment for which it was designed. He also stressed the fact that the electromagnetic spectrum is a natural resource and must be conserved and utilized carefully, because this natural resource has its physical limitations. Once we use it up or contaminate it with interference signals of all kinds, then it has limited usefulness.
A paper entitled “Electromagnetic Interference Analysis and Control for Compatible Military Operation” was presented by Mr. Joseph Berliner of the Rome Air Development Center. Mr. A. L. Albin and Mr. Murray Gunar of the Filtron Company presented a paper entitled “Interference Analysis in the Ballistic Missile Early Warning System.” Many new techniques and devices were shown on the screen and described in this paper which indicated that the state-of–the–art has been advanced.
A most comprehensive paper was presented by Mr. Leonard Milton, Executive Vice President of the Filtron Company, entitled “Methods of Signal Density Measurements.” This paper, which was illustrated by over 50 colored photographs, described an electromagnetic radiation analysis that was taken of Thule Air Force Base and the Arctic vicinity by the Filtron Company last summer. Described were the methods of measurement. Shown were the radio interference vans, fully equipped for automatic measuring, and the data obtained and the calculations and analysis were presented.
Mr. E. R. Radford of the General Electric Company, Syracuse, presented an outstanding paper on “RF Power Density Evaluation and Measurements of AN/FPS-7 Radar System.” Mr. Radford’s paper was supplemented by over 40 photographs of the system. He described the methods, instrumentation, and results of the measurement program, together with an evaluation and analysis of the data.
Other outstanding papers were presented by Mr. W. B. Floyd and Mr. A. L. Fullerton, Jr., of Melpar, entitled “Interference Prediction Utilizing a Digital Computer” and Dr. H. A. Meyers of the Rand Corporation who spoke on “Effects of Dense Radar Distributions in Receivers.”
This classified symposium was attended by interference engineers and experts throughout the country, and was acknowledged by military interference experts as the most informative and technically up-to-date of all the interference symposia held so far. EMC

Editor’s Note: Unfortunately, better quality photos from this newsletter dated 1959 are not available for this publication. These photos were taken from a scan of the actual newsletter. We’ve come a long way since 1959 with photography today!
“Interference Authorities Meet at Radio Interference Seminar” from left to right: S. J. Burruano, Seminar Chairman, Len Milton, Executive Vice President, Filtron Co., Inc., Col. C. H. Lewis, Director of Electronics, ARDC, USAF, Sam Skolnik, WADC – Systems Interference Control, William Webb, WADC – Systems Interference Control and J. Berliner, RADC – Systems Interference Control



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