Sunday, May 31, 2015




DHO38
DHO38, Rhauderfehn, Germany. Click on image for larger version. | Data
Sfreic Intensity 5-9kHz
24 Hour Average Sferic Level 5-9kHz (click graph for larger image) | Data
Hum Levels 24 Hr
24 Hour Average Hum Level (click graph for larger image) | Data

posted by YO9GJX at 5:51 AM 0 comments