NASA NTRS · 19720004435
Dual frequency (20.0-19.9 kHz) VLF data
Abstract
Data are presented from 24 months of operation of radio station WWVL. Daily measurements of the 20.0 kHz and 20.0/19.9 kHz signal phase angles corrected in accordance with the NBS measurements are presented in tabular form. The 20.0/19.9 kHz data is a function of the phase angle of the 100 Hz information inherent in the 20.0/19.9 transmissions. This data can be used to resolve the 50 microsecond ambiguity inherent in 20.0 kHz single frequency transmissions.
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Looney, C. H.. 1968-06-01. Dual frequency (20.0-19.9 kHz) VLF data. https://ntrs.nasa.gov/citations/19720004435
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