As Solar Cycle 25 peaks, learn how increased sunspots and ionospheric ionization are boosting shortwave radio propagation.

A mysterious shortwave radio signal that began broadcasting in the hours after the Iran war commenced has captured the ...

“Tavajoh! Tavajoh! Tavajoh!” a man’s voice announces, before going on to narrate a string of numbers in no apparent order, slowly and rhythmically. After nearly two hours, the calls of “Attention!” in ...

The broadcast repeats at regular time intervals. This eerie broadcast started on February 28, just hours after the United States and Israel launched military strikes on Iran. As the Iranian government ...

Over the years, I have owned and used many radios to tune into international shortwave radio broadcasts, including the iconic Panasonic RF-2200 from the 1980s. But few have impressed me as much as the ...