Ads
related to: programmable light controller for rv roof mount radio antennacampingworld.com has been visited by 100K+ users in the past month
Search results
Results from the WOW.Com Content Network
A reconfigurable antenna is an antenna capable of modifying its frequency and radiation properties dynamically, in a controlled and reversible manner. [2] In order to provide a dynamic response, reconfigurable antennas integrate an inner mechanism (such as RF switches, varactors, mechanical actuators or tunable materials) that enable the intentional redistribution of the RF currents over the ...
Radio Set for Forward Area, Manpack-Vehicle, FM, 3-5 Mile Range, replaced by AN/PRC-77: Electrospace Corp. AN/PRC-32: Survival radio operating at 243 MHz: AN/PRC-47: Portable radio, HF 100W AM/CW/USB/RTTY, powered by AC supply, battery or generator, transported in two boxes including all accessories for operation: AN/PRC-49: Survival radio: AN ...
Controlled reception pattern antennas (CRPA) are active antennas that are designed to resist radio jamming and spoofing. They are used in navigation applications to resist GPS spoofing attacks. [ 1 ] [ 2 ]
Land mobile radio systems use channels in the VHF or UHF bands, since the antennas used at these short wavelengths are small enough to mount on vehicles or handheld transceivers. Transmitter power is usually limited to a few watts, to provide a reliable working range on the order of 3 to 20 miles (4.8 to 32 km) depending on terrain.
TART-2 consists of 24 elements and is capable of continuous all-sky imaging, with the 'first light' image being taken in August 2015. TART-2 was upgraded into TART-2.1 with reduce costs and improved clock stability. TART-2.1 started operation in 2018. [5] TART-2 includes real-time correlation of the radio data from every pair of antennas.
An antenna rotator (or antenna rotor) is a device used to change the orientation, within the horizontal plane, of a directional antenna. Most antenna rotators have two parts, the rotator unit and the controller. The controller is normally placed near the equipment which the antenna is connected to, while the rotator is mounted on the antenna ...
Louis Varney (G5RV) invented this antenna in 1946. [4] It is very popular in the United States. [5] The antenna can be erected as horizontal dipole, as sloper, or an inverted-V antenna. With a transmatch, (antenna tuner) it can operate on all HF amateur radio bands (3.5–30 MHz). [5] [6]
A spatial light modulator (SLM) is a device that can control the intensity, phase, or polarization of light in a spatially varying manner. A simple example is an overhead projector transparency . Usually when the term SLM is used, it means that the transparency can be controlled by a computer .
Ads
related to: programmable light controller for rv roof mount radio antennacampingworld.com has been visited by 100K+ users in the past month