Experiments in very low-frequency radio propagation
In an effort to extend experimentally determined data on the characteristics of very low-frequency radio waves, a vlf transmitting station (8.4 kc) was established at Shaver Lake, California. The establishment of this station permitted controlled experiments in long distance propagation, ionospheri...
Internet
https://thesis.library.caltech.edu/457/1/Golden_rm_1959.pdfGolden, Roger Morse (1959) Experiments in very low-frequency radio propagation. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/E1C7-K279. https://resolver.caltech.edu/CaltechETD:etd-02022006-091215 <https://resolver.caltech.edu/CaltechETD:etd-02022006-091215>