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.

A Washington, D.C.-area helicopter pilot says Army Black Hawk was flying published route and on appropriate radio frequency.

Such predictive analysis is very popular for short-term intraday trading. Speed is essential for success in high-frequency trading. Speed depends on the available network and computer ...

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

Via Monte Carlo simulations we show that in a world without microstructure noise, the best model is the one using the highest available frequency for the predictors. However, in the presence of ...

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