[DXCommander] shows us his 40 meter two-element vertical antenna build in the video below. A typical Yagi is just a dipole with some slightly longer or shorter elements to direct or reflect the ...

Most readers will be aware that a good way to extend WiFi range is to use a better antenna for those 2.4 GHz signals ... that reputation to the test by building a helical WiFi antenna — and ...

A parabolic antenna brings radio waves from a particular ... For the ATA, with 6.1 meter dishes, the FOV at a wavelength of 21 cm is 0.04 radians or 2.5 degrees (five times the angular width of the ...

Did you know the Eiffel Tower can grow up to 15 centimeters taller in summer? This change is mainly due to thermal expansion.

Scientists theorized gravitational waves as far back as the late 19th century, but they were not confirmed until 2015 when ...

On Wednesday, the agency showed off its mock-ups of the LISA spacecraft, called the Engineering Development Unit Telescope.

KOGA, Ibaraki Prefecture--Standing tall and proud over an area of 1 million square meters or so ... 1941. The main building still retains a prewar ambience. Shortwave radios were the primary ...

"Reflectivity" is the amount of transmitted power returned to the radar receiver after hitting precipitation, compared to a reference power density at a distance of 1 meter from the radar antenna.

The Medic in Remnant 2 is more than able to solve problems on its own. Here's a build that's all about doing ... chance for every 1% or the charge meter filled upon firing. That, combined with ...

Saipem, the Italian energy industry services company, has secured offshore oil and gas field construction contracts in Guyana and Egypt worth some US$ 1.2 billion in total In Guyana, the U.S. oil ...

All models include 802.11n Wi-Fi support, as well as Bluetooth 4.2 connectivity. The device is also water-resistant to 50 meters ... display also doubles as the antenna for the Apple Watch ...