There is also the https://en.wikipedia.org/wiki/United_States_National_Radio_Quiet_Zone https://en.wikipedia.org/wiki/United_States_National_Radio_Q... https:/

There is also the https://en.wikipedia.org/wiki/United_States_National_Radio_Quiet_Zone https://en.wikipedia.org/wiki/United_States_National_Radio_Q... https://wgme.com/news/nation-world/full-measure-the-no-fi-zone https://wgme.com/news/nation-world/full-measure-the-no-fi-zo...