HFU HF Underground

Technical Topics => Equipment => Topic started by: IQ_imbalance on November 18, 2018, 0147 UTC

Title: for all you LF lovers....
Post by: IQ_imbalance on November 18, 2018, 0147 UTC

https://www.facebook.com/225757590289/videos/528106897202190/

Title: Re: for all you LF lovers....
Post by: Josh on November 19, 2018, 2101 UTC

Neat! and more info;
https://en.wikipedia.org/wiki/Survivable_Low_Frequency_Communications_System