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High-resolution Spectral Observations of Jupiter's Decametric Radio Emission

Abstract

DURING the 1963 apparition of Jupiter, an experiment was carried out relating to the fine structure in the dynamic spectra of Jovian decametric radiation. The equipment used was a sweep-frequency receiver1, operated between 20 and 18 Mc/s with a repetition frequency of 10/sec. The 3 and 20 db. intermediate frequency band-widths were 80 and 150 kc/s, respectively, and the post-detection time constant 0.1 msec. The dynamic spectra were recorded photographically from the intensity-modulated cathode-ray tube display. The aerial installation consisted of four identical three-element Yagi aerials, two of them connected in parallel to the spectrograph and two others, separated by 7.5 wave-lengths, to a phase-switching interferometer on 19.3 Mc/s driving a pen recorder. All the Yagi aerials were directed 30° west of the meridian.

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RIIHIMAA, J. High-resolution Spectral Observations of Jupiter's Decametric Radio Emission. Nature 202, 476–477 (1964). https://doi.org/10.1038/202476a0

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