Note on a multi-frequency automatic recorder of ionosphere heights

• 1 October 1933
• journal article
• Published by National Institute of Standards and Technology (NIST) in Bureau of Standards Journal of Research
• Vol. 11  (4) , 561
• https://doi.org/10.6028/jres.011.038

Abstract

Keywords

• IONOSPHERE HEIGHTS
• FREQUENCY AUTOMATIC
• AUTOMATIC RECORDER
• MULTI FREQUENCY