VLF Rx

VLF Receiver new Home – Back Online!

M0DTS VLF Rx in IO94IL 54.5N,1.29W – (DK7FC design) E-field Probe at 6m above ground

VLF Spectrograms.
You may have to use Shift-F5 to refresh correctly.
*** 31/7/2025 *** Using alternate remote site 200m away from house

Full 24KHz VLF

8.27KHz 200uHz resolution, 15min overlap at 5min intervals.

60min overlap and 15min interval:


5170Hz 60min overlap and 15min interval:




1480Hz Optical Beacon tests – 10km NLOS! 75mW to 1xLED no lens.