Frequency selective levelmeters, also known as frequency selective voltmeters, are commercially-built receivers used in the power utility industry for maintenance and troubleshooting. They have been ...

Ham radio operators are sounding the alarm over the latest threat to their beloved hobby—and this time, it is coming from Wall Street. A group of high-frequency trading firms is asking the Federal ...

that traveled nearly 200 miles, leveled towns, killed scores of people, and left widespread devastation. When emergency responders started hitting the scene, they heard amateur (ham) radio operators ...

SCARBOROUGH — While other people were paddling, swimming and biking over the weekend, some dedicated hams were huddled over their radios for a marathon test of emergency communication skills. They ...