Extremely Low Frequencies
Summary
Extremely Low Frequencies is a historical and technical overview of naval ELF and VLF submarine communications. It covers early experiments, the development of long-wave techniques, major projects and sites (such as Sanguine, Seafarer, NSS, Cutler, and Wisconsin/Clam Lake), antenna designs (ground dipoles), and the political and environmental controversy that shaped the program, which ultimately ended in 2004.