ULTRA-HIGH ELECTROMAGNETIC FREQUENCIES

Abstract

AT a joint meeting of the Institute of Kadio Engineers and the American Institute of Electrical Engineers held on January 28, G. C. Southworth explained how micro-waves are adding to the tools of the communications engineer (Bell Lab. Rec., 21, No. 7 ; March, 1943). Briefly outlining the conquest of the frequencies, Dr. Southworth mentioned the need of television and communication in general for more and wider channels as one of the prime forces in the advance into the micro-waves. Other desirable features of the 'micro' region are the small size of antennae and their high directivity, and the fact that the waves follow the line of sight and thus do not interfere with signals beyond their own useful range.