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https://www.spectrumwiki.com/wiki/Login.aspx?Rawurl=/File/AddEditFile.aspx?EditFileId=62
SpectrumWiki
https://earthzine.org/spectrumwiki-a-new-resource-for-cataloging-the-radio-spectrum/
SpectrumWiki: A New Resource for Cataloging the Radio Spectrum - Earthzine
Jun 26, 2021 - SpectrumWiki is a consolidated source of information about the use of the radio spectrum. The information comes from a variety of sources, including a growing...
a newthe radioresourcecatalogingspectrum