ISLAMABAD — Pakistan on Tuesday unveiled a very low frequency (VLF) communication facility that will enable it to communicate with deployed submarines. Mansoor Ahmed, a postdoctoral research fellow at ...
Recent mine disasters have shown the need for improved communications underground. While broadcasters face challenges getting signals into urban canyons, sending RF through a thousand feet of rock and ...
The barrier, which comes and goes, is the result of very low frequency radio communications interacting with particles in space, which results in a sort of shield protecting Earth from high energy ...
Narrow-band VLF transmitter waves originate from the powerful ground-based VLF transmitters for submarine communications, which are typically over the frequency range of 10–30 kHz. VLF transmitter ...
The Earth's atmosphere bears precious little resemblance to what it looked like at the start of the Industrial Revolution. As radio technology has advanced and spread, the signals that transmitters ...
When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Ever since I built a receiver more than 40 years ago to pick up RF frequencies around 15 kHz (it ...
This story originally appeared in TV Technology. While frequencies near the upper end of the RF spectrum — 60 GHz up to the terahertz range — are gaining attention due to their ability to transmit ...
Humans have long been shaping Earth's landscape, but now scientists know that we also can shape our near-space environment with radio communications, which have been found to interact with particles ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results