beam transmitter
31Microwave transmission — The atmospheric attenuation of microwaves in dry air with a precipitable water vapor level of 0.001 mm. The downward spikes in the graph correspond to frequencies at which microwaves are absorbed more strongly, such as by oxygen molecules… …
32Battle of the Beams — The Battle of the Beams was a period in early World War II when bombers of the German Air Force ( Luftwaffe ) started using radio navigation for night bombing. British scientific intelligence at the Air Ministry fought back with a variety of… …
33List of World War II electronic warfare equipment — This is a List of World War II electronic warfare equipment and code words and tactics derived directly from the use of electronic equipment.Equipment and code words*AI (Airborne Interception) British night fighter radars *Airborne Cigar (A.B.C.) …
34Thinned array curse — The thinned array curse (sometimes, sparse array curse ) is a theorem in electromagnetic theory of transmitters. It states that a transmitting aperture which is synthesized by a coherent phased array of smaller apertures that are spaced apart… …
35Marconi Station — The New Brunswick Marconi Radio Station in Somerset, New Jersey, being toured in 1921 by some of the greatest physicists and scientists of the era, including Albert Einstein and Nikola Tesla. The Marconi Wireless Corporation operated numerous… …
36List of devices used by Doctor Doom — This article lists devices used by the Doctor Doom, a fictional supervillain of the Marvel Comics universe and enemy of the Fantastic Four. Over the course of his appearances, Doom has used over 100 devices, many of which he also invented.… …
37List of electronics topics — Alphabetization has been neglected in some parts of this article (the b section in particular). You can help by editing it. This is a list of communications, computers, electronic circuits, fiberoptics, microelectronics, medical electronics,… …
38High-gain antenna — The high gain antenna (HGA) is an antenna with a focused, narrow radiowave beam width. This narrow beam width allows more precise targeting of the radio signal also known as a directional antenna. Most commonly referred to during space missions,… …
39Direction finding — (DF) refers to the establishment of the direction from which a received signal was transmitted. This can refer to radio or other forms of wireless communication. By combining the direction information from two or more suitably spaced receivers… …
40XERF-AM — The call letters XERF AM are assigned to a licensed border blaster radio station that was located in Villa Acuña, Coahuila, (later renamed Ciudad Acuña) and that was operated under the laws of Mexico by Ramón D. Bósquez. Once world famous, XERF… …
