January 21, 1972 videotape of WWV time signal (shortwave radio) https://www.youtube.com/watch?fbclid=IwAR0IuSpYXmBeec5mL429BrTapnbveve0fPYCX0t-FILQot6PIEZCCgm3VqA&v=tP42qAiEY5I&feature=youtu.be
New quantum receiver the first to detect entire radio frequency spectrum https://phys.org/news/2021-02-quantum-entire-radio-frequency-spectrum.html
DX QUICK TIPS Guest Contributor: Ron Howard https://medxr.blogspot.com/2021/02/dx-quick-tips-guest-contributor-howard.html