2017-05-13, 22:16
A 4G cell might be down in the 800 MHz band, though as you say not an issue for a Blitzortung receiver and 5 km is a long way.
Depending on where in France Kellogs is the VLF ransmitter near Rosnay might be more of a problem as it uses 18.3 kHz, 20.9 kHz & 21.7 kHz, possibly not all at the same time.
Any chance of that link pointing to a file on the web somewhere rather than a file on your local C:? Grounding of aerial downleads is not a global practice, doesn't happen in the UK. But the laws of physics don't change and if it reduces noise...
Depending on where in France Kellogs is the VLF ransmitter near Rosnay might be more of a problem as it uses 18.3 kHz, 20.9 kHz & 21.7 kHz, possibly not all at the same time.
Any chance of that link pointing to a file on the web somewhere rather than a file on your local C:? Grounding of aerial downleads is not a global practice, doesn't happen in the UK. But the laws of physics don't change and if it reduces noise...