‎"BRUCE E. & A. C. BECK & , L. R. LOWRY.‎
‎Horizontal Rhombic Antennas.‎

‎New York, American Telephone and Telegraph Company, 1935. 8vo. Original full blue cloth. Volume 14, 1935 of ""The Bell System Technical Journal"". Library stamp to free front end-paper. Minor bumping to extremities. A nice and clean copy. Pp: 135-158. [Entire volume: pp. 7, (1), 730 pp].‎

Reference : 43104

‎First printing of Edmond Bruce' paper on Horizontal Rhombic Antennas. Edmond Bruce and Harald Friis invented the rhombic antenna, which was a broadband directional antenna most commonly used in HF (high frequency, or shortwave) ranges.This paper discusses the theoretical methods employed by the authors in dimensioning horizontal rhombic receiving antennas. ‎