A tool called the Automatic Packet Reporting System (APRS) is fairly robust in the very high frequency (VHF) part of the amateur radio spectrum, but this solution still relies on a not ...

Learn about the reflection of high-frequency signals in 5G communications and how impedance discontinuities can influence ...

Anybody can develop high frequency hearing loss, but it becomes more common with age. Exposure to loud sounds or high frequency sounds are common causes of ear damage in younger people.

India's new advanced VHF radar enhances air defense by detecting stealth aircraft, ensuring continuous surveillance, and ...

A collision on Jan 29 night, between a Black Hawk military helicopter and an American Airlines subsidiary’s CRJ700 regional ...