Shortwave radio operates within the high-frequency (HF) band, typically between 3 to 30 MHz. Unlike AM and FM signals, shortwave signals can bounce off the ionosphere, allowing them to reach distances ...

Noise issues of LED light fixtures. Learn about their conducted and radiated emissions and their impact on amateur radio and ...

The President's Emergency Plan for AIDS Relief has been the subject of a series of presidential orders and memos that have ...

The President's Emergency Plan for AIDS Relief received a waiver from the Trump administration's initial stop-work order for aid programs. What has that meant for the programs they fund?

Over radio’s first century of evolution as a broadcast medium, numerous innovations served to improve the efficiency of ...