H-field antennas: 150 m long earth dipoles, EW = east-west 265°, SN = south-north 355°, active E-field probe: V = vertical
360° colour-DF with E and both H antennas (1 Hz FFT, 2 minute scroll)
180° colour-DF, using only the two H-field earth loops
VLF wideband, 1.95 Hz FFT resolution, 2 minute scrolling, upload every 10 minutes (top: EW, middle: SN, bottom: Vertical)
West cardioid, GBZ, NWC long path
East cardioid, NWC short path
Phase and amplitude plots for NAA 24 kHz (west) and NWC 19.8 kHz (east)
Alpha (RSDN-20) dashes (east cardioid, phase colour)
Alpha amplitude and phase plots (five minute complex averaging, daily 21 UT phase-steps removed)
Stations (top to bottom): Krasnodar (+10 dB), Novosibirsk, Khabarovsk, Revda (-40 dB)
Frequencies: red F1=11905 Hz, purple F4=12091 Hz, orange F2=12649 Hz, yellow F3=14881 Hz
JJY 40 kHz (Fukushima, 9142 km), 446.5 µHz FFT, 10 minute scroll (top: phase colour R-G-B-R, bottom: amplitude and phase plot)
8.27 kHz, 3.8 mHz, 1 minute scroll (top V, bottom EW)
5.17 kHz, 3.8 mHz, 1 minute scroll (top SN, bottom EW)
8.27 kHz 424 µHz Colour-DF
8.27 and 5.17 kHz, 424 µHz, 10 minute scroll (top: EW, middle: SN, bottom: V)
2.97 and 1.67 kHz, 424 µHz, 10 minute scroll (V)
8.27 kHz, 47.1 µHz FFT resolution, 1 hour scroll (W cardioid), previous image
ZEVS at 82 Hz: Snapshot of a fast transmission, using 10 second symbols (45.8 mHz FFT, 5 s scroll, Feb. 2018)
ZEVS phase, 81.999988 Hz reference, 424 µHz FFT, 10 minute scroll (top: colours R-G-B-R for advancing phase, bottom: plot)
ZEVS and ELF Schumann resonances, 7.63 mHz FFT, 1 minute scroll (E-field)
50 Hz grid frequency plots of 15 minutes and 30 hours, ELF antenna levels
60 Hz radiation from American power grids received in Europe (0.977 mHz FFT, 5 minute scroll)
Unspread spectral lines for Quebec (top until 24-11-14) or Western (top since 11-15) and Eastern (bottom) interconnect networks,
using grid frequency data from FNET/GridEye
World lightning map from WWLLN.net
European lightning map from Blitzortung.org
VLF grabbers: DF6NM DK7FC Paul Nicholson IK1QFK IW4DXW IZ7SLZ KL7L M0DTS RN3AUS SQ5BPF DL0AO (LF)