Might be great for passive radar.

   On Fri, Oct 15, 2021, 6:58 AM grarpamp <[1]grarpamp@gmail.com> wrote:

     Did someone's wallet just get lighter :)
     It's rx-only though... cpunks still need a way to communicate
     freely worldwide without using GovCorp infrastructure, passing
     beyond borders of jurisdictions and continents... via encrypted RF.
     Using both shorter HF P2P hops, but also reaching out as far
     as possible using whatever antenna you can manage to raise
     or lay down...
     [2]https://en.wikipedia.org/wiki/Extremely_low_frequency
     [3]https://en.wikipedia.org/wiki/Spark-gap_transmitter
     Jim may volunteer for the new quantum radio division...
     [4]https://duckduckgo.com/?q="quantum+radio"

References

   1. mailto:grarpamp@gmail.com
   2. https://en.wikipedia.org/wiki/Extremely_low_frequency
   3. https://en.wikipedia.org/wiki/Spark-gap_transmitter
   4. https://duckduckgo.com/?q=