On Friday evening, March 17th, at Columbia University, New York City, Mr. Fritz Lowenstein presented a paper on “The Efficiency of Radio Sets.” Mr. Lowenstein discussed the design, installation and operation of various sizes of transmitting and receiving sets. Special consideration was given to the correct methods of tuning open spark and quenched spark transmitters. The Radio Club of America is progressing rapidly and each month has a paper similar to this. Anyone who is interested in the Association may obtain information from D. S. Browne, Corresponding Secretary, 206 West 86th St., New York City, N. Y.
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