Twelve hours after the US and Israel began bombing Iran on February 28, 2026, a shortwave radio signal started broadcasting in Persian - a man's voice, counting random numbers, followed by the word ...

The ionosphere is of great importance to shortwave radio transmissions, since it allows radio waves to be refracted and ...

Sunspot region 4114 has unleashed its most powerful solar flare yet — an X1.9 class that erupted late June 19, triggering shortwave radio blackouts across the Pacific Ocean, including parts of Hawaii.

Despite an earlier announcement that Radio Martí was back on the air following a presidential executive order that suddenly halted the U.S.-funded radio broadcasting to Cuba, its signal is probably ...

In this handout photo provided by NASA, an MDI image shows giant sunspots 486 and 488. Credit: NASA via Getty Images Beyond their love of radio, amateur radio operators and shortwave radio ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. Scientists have searched the skies for alien radio signals for more than 60 years, but all ...

Even with the loss of the Voice of America, the international shortwave radio bands are still alive with stations worth listening to. But what can you do if you don’t have a shortwave radio receiver, ...