Abstract
DURING October–November 1964 and April 1965, measurements were made with the 1,000-ft. radio telescope of the Arecibo Ionospheric Observatory1 for the purpose of determining the spectra in the 20–40 Mc/s range of some of the stronger radio sources having declinations between −1.5° and +38.5°. It should be of interest to compare these measurements, in which a filled aperture pencil beam was used, with other recent measurements2–4 made below 40 Mc/s using a Mill's cross (T shaped) or spaced interferometric arrays.
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References
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GUIDICE, D. Spectra of Nine Discrete Radio Sources in the 20–40 Mc/s Range. Nature 211, 57–59 (1966). https://doi.org/10.1038/211057a0
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DOI: https://doi.org/10.1038/211057a0
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