Today in Science History -
• as Spectrum Auction Delayed
• UK Warns
• Supercomputers Help
• , According to Science
• in Greater Numbers
• to Join Staff
• C-Band Legislation to
• Satellites Shifting to
Advanced Test 500彩票手机快三在线投注 Corporation (ATEC)announced it is now offering According to UK National Archives: "6,725 [V−1s] were launched at Britain. Of these, 2,340 hit London, causing 5,475 deaths, with 16,000 injured." Re the map: "This patch of English woodland near the village of Bromley Green, about eight miles from the Channel shore, was once a smoking crater. A - fired by Germany's Luftwaffe at London but shot down minutes before getting there - crashed and exploded here around eight o'clock in the morning on August 27, 1944, gouging a hole in the earth 10 feet deep and 20 feet across. The blast of its warhead and fuel lifted the nearest house, more than 600 feet away, off its foundations. Seventy-five years later, to the exact day, the old crater is the site of an archaeological investigation led by two brothers who grew up hearing stories of the terror wrought by Germany's V−1s. Colin and Sean Welch have searched for fragments of the flying bombs over the past 10 years..."
develops innovative and robust RF test and measurement solutions for engineers all over the world. Copper Mountain's extensive line of unique form factor include an RF measurement module and a software application which runs on any Windows PC, laptop or tablet, connecting to the measurement hardware via USB interface. The result is a lower cost, faster, more effective test process that fits into the modern workspace in lab, production, field and secure testing environments.
The world is full of geniuses who have ideas with the potential to introduce history-making products and services to mankind. Thankfully, many of them manage to draw the attention to themselves and make their contributions available. Some of those same people have the talent to prepare their inventions and concepts for distribution, while others require the know-how of others - nowadays known as manufacturing engineers - to figure out how to mass produce a product with enough efficiency to make things affordable. Thomas Edison, Henry Ford, George Westinghouse, Lee De Forest, and other recognizable inventors depended on assistance for ultimate success. I will soon be posting stories of De Forest's long, hard-fought path to success with his Audion tube which will make you500彩票手机快三在线投注 wonder how people can have the fortitude to continue...
Triad RF Systems, a leading designer and manufacturer of high performance RF/Microwave amplifiers and integrated radio systems, has recently announced the launch of a new brand identity and website. Founded in 2013 by three partners with decades of accumulated knowledge of RF/Microwave amplifier and integrated radio system design and manufacturing experience, Triad is making a strategic move to continue its dominance within high-performance radio system applications. Already respected by the military, defense, commercial radio, and UAV marketplace for making high quality, state-of-the-art RF/Microwave amplifiers and subsystems, their new logo and website is a move that clearly is intended to help further position them as leaders in their field. Visitors to their new website will discover Triad's track record of creating RF/microwave amplifier products...
Ode on a Power Supply? Well, maybe not really an ode, but this poem entitled, "Power Supply," written by Eileen V. Corridan, appeared in the September 1942 edition of the ARRL's QST magazine. It is really quite entertaining and instructive! It applies to the original tube-based circuit as well as to modern solid state versions. I somehow get the feeling that this poem will now be republished in many places...
"New program aims to develop wideband adaptive RF circuit technology to from external and self-generated signals. Today's electromagnetic (EM) spectrum is a scarce resource that is becoming increasingly congested and contested as friendly, unfriendly, and neutral entities vie for available spectrum resources at any given time, location, and frequency. Within the Department of Defense (DoD), radio frequency (RF) systems, such as communications networks and radar, must operate within this congested environment and contend with mission-compromising interference from both self- and externally generated signals. A desire to support wideband EM spectrum operations also adds to the burden, as current approaches to mitigating wideband receiver interference..."
ConductRF offers many lines of Lab & Production RF Test solutions for DC to 40 GHz. ERZIA serves critical aerospace and defense missions by designing and manufacturing , integrated assemblies operating from low frequencies up to 100 GHz, and by providing high reliable satellite communications. The company was founded in 2002 to become a worldwide reference of advanced engineering, performance, reliability and ruggedness. Their catalogue of standard amplifier modules comprises more than 100 different models, having also a high capacity of customization for amplifiers and integrated assemblies. Some of products have space heritage and are used in aerospace, commercial, military and scientific systems, having a wide range of final applications.
We're about due for another round of is a multinational RF communication equipment and engineering service company serving both commercial and government entities and their affiliates worldwide. Power amplifiers ranging from 10 kHz to 51 GHz with various output power levels and noise figure ranges, we fully support custom designs and manufacturing requirements for both small and large volume levels. decades of combined experience in the RF field for numerous applications including military jamming, communications, radar, EMI/EMC and various commercial projects with all designing and manufacturing of our HPA, MPA, and LNA products in-house.
In 1931, QST reader John H. Miller, Electrical Engineer, of the Jewell Electrical Instrument 500彩票手机快三在线投注, wrote to the editor regarding the story "What Is This Thing Called Decibel?," by James L McLaughlin and James J. Lamb, which appeared in the August issue of that year. Mr. Miller wished to inform (or remind) readers that the Dan F., of (CTT®), wrote to ask that his company be listed on the RF Cafe categorized vendor pages. Per their website, the founders of CTT have over 40 years of telemetry research experience between them. In 2007, when not satisfied with the current products on the market, they created Cellular Tracking Technologies in order to bring the newest innovations and highest levels of service to the wildlife research market. They offer a full complement of GPS / GSM / ARGOS and digitally coded radio products that can be used for tracking wildlife, pets, disabled family members, etc. All products can be fit into almost any case design, from standard backpacks to ultra-customized solutions. CTT is located in Rio Grande, NJ (who knew there was a Rio Grande in New Jersey?)
"In the race for ever smaller semiconductor structures, the chemical compounds indium selenide and gallium selenide are considered promising candidates. As extremely thin layers, they form two-dimensional semiconductors. So far however, they are hardly ever used because they change during production and through contact with air. A new technology makes it possible to integrate the sensitive materials into electronic components without losing any of their desired properties. A research group at the HZDR Institute for Ion Beam Physics and Materials Research in Dresden has succeeded in producing based on indium selenide and gallium selenide. The encapsulation technique protects the sensitive layers..."
Camouflaging amateur radio antennas and their mounts is not a new concept, although an increasingly large amount of prohibitions by community organizations and/or municipalities have made the lives of many hobbyists more difficult. The ARRL's QST magazine issues are replete with articles describing how desperate and determined Hams have managed to erect successful antennas in spite of imposed limitations. Flag poles have long been the means of disguising vertical antennas of the 1/4-wave, 1/2-wave, J-pole, and other formats that are constructed in a long, straight line. Some authors are just-the-facts types and aptly present all the required information for getting the job done. Others, like Roland McMahan, throw in a bit of humor to help take the bite out having such an otherwise unnecessary task imposed upon him - in this case at the "request" (pronounced "insistence") of his YL...