Summary
A system for recording the direction of arrival and intensity of static on short waves is described. The system consists of a rotating directional antenna array, a double detection receiver and an energy operated automatic recorder. The operation of the system is such that the output of the receiver is kept constant regardless of the intensity of the static.
Data obtained with this system show the presence of three separate groups of static: Group 1, static from local thunderstorms; Group 2, static from distant thunderstorms, and Group 3, a steady hiss type static of unknown origin.
Curves are given showing the direction of arrival and intensity of static of the first group plotted against time of day and for several different thunderstorms. Static of the second group was found to correspond to that on long waves in the direction of arrival and is heard only when the long wave static is very strong. The static of this group comes most of the time from directions lying between southeast and southwest as does the long wave static.
Curves are given showing the direction of arrival of static of group three plotted against time of day. The direction varies gradually throughout the day going almost completely around the compass in 24 hours. The evidence indicates that the source of this static is somehow associated with the sun.
Decimal classification: R114. Original manuscript received by the Institute, May 26, 1932. Presented at the meeting of the American Section of the U.R.S.I at Washington, D.C., April 29, 1932.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Reprinted, with permission, from the ‘Proceedings of the Institute of Radio Engineers’ 20, 1920–1932 (1932).
A detailed description of the measuring set and recorder is given in a paper by W. W. Mutch, Proceedings, this issue, pp. 1914–1919.
A. A. Oswald, “Transoceanic telephone service, short wave equipment,” Jour. A.I.E.E., vol. 49, p. 267; April, (1930)
F. B. Llewellyn, “A study of noise in vacuum tubes and attached circuits,” Proc. I.R.E., vol. 18, p. 243; February, (1930)
H. T. Friis and E. Bruce, “A radio field strength measuring system for frequencies up to forty megacycles,” Proc. I.R.E., vol. 14, p. 507; August, (1926)
W. J. Humphres, “Physics of the Air,” p. 365. Also Ward, “The Climates of the United States,” p. 322.
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 1932 The Institute of Radio Engineers
About this chapter
Cite this chapter
Jansky, K.G. (1932). Directional Studies of Atmospherics at High Frequencies. In: Classics in Radio Astronomy. Studies in the History of Modern Science, vol 10. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-7752-5_1
Download citation
DOI: https://doi.org/10.1007/978-94-009-7752-5_1
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-009-7754-9
Online ISBN: 978-94-009-7752-5
eBook Packages: Springer Book Archive