Although ham radio offers a wide array of bands to transmit on, not to mention plenty of modes to communicate with, not everyone wants or needs to use all of this capability. For those needing ...

Imagine if your watch could sing to you. No, seriously, like a full-on mini symphony on demand. That’s the magic of minute repeater watches. Kind of. "Minute repeater watches are the rockstars of ...

Esophagitis is inflammation and irritation of the esophagus. The cause of esophagitis is usually acid reflux. In rare cases, it results from a herpes infection in the throat. The esophagus, or food ...

Gift 5 articles to anyone you choose each month when you subscribe. Paul Newman must shoulder part of the blame. In October 2017, the actor’s Rolex Daytona sold at ...

Cellular signal boosters use big antennas to improve the coverage in your home or car. These are the top signal boosters for apartments, houses, and vehicles. I’m one of PCMag’s mobile analysts. That ...

Herpesvirus is an infectious agent belonging to the virus family Herpesviridae that causes latent and lytic infections in a wide range of animals and humans. There are 8 herpesvirus types currently ...

Abstract: Interrupted-sampling repeater jamming (ISRJ) is coherent jamming based on digital radio frequency memory (DRFM) device, which repeatedly samples, stores, modulates, and retransmits part of ...

Abstract: Simplex-structured matrix factorization (SSMF) is a common task encountered in signal processing and machine learning. Minimum-volume constrained unmixing (MVCU) algorithms are among the ...