Amplitude and Phase Data for VLF Transmitter Observed in Delaware

This data set includes the mixed down amplitude and phase of two VLF transmitters operated by the U. S. Navy. These are the NLK transmitter located in Jim Creek, WA (48.2 N, 121.9 W) radiating 250 kW at 24.8 kHz and the NML transmitter, located in LaMoure, ND (46.4 N, 98.3 W) radiating 500 kW at 25.2 kHz. The observation location is in Delaware (39.3N, 75.6 W). The time of the recordings corresponds to 12 atmospheric lightning events that created perturbations in these signals. The format is MATLAB version 4.