VLF-radio monitoring VLF-radio method designed to detect electromagnetic pulse (EMP), which occur in the atmosphere and outer space as a result of strong electrical discharges, that can be caused due to nuclear explosions, storm activity and other geophysical phenomena.
They usually just send a short code and come to periscope depth to get intel from satellite downlinks. Didn’t you ever read “The Hunt for Red October?” :)
VLF-radio monitoring / Monitoring
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VLF-radio monitoring VLF-radio method designed to detect electromagnetic pulse (EMP), which occur in the atmosphere and outer space as a result of strong electrical discharges, that can be caused due to nuclear explosions, storm activity and other geophysical phenomena.
So basically, something is happening or something happened?
The data rate for VLF traffic is painfully slow.
They usually just send a short code and come to periscope depth to get intel from satellite downlinks. Didn’t you ever read “The Hunt for Red October?” :)
That's what I'm thinking.