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Today in Science History

The Power FET

The Power FET, June 1969 Electronics World - RF CafeCrystalonics is not a name that immediately comes to mind when thinking about semiconductor manufacturers. They appear in this 1969 article in Electronics World magazine about power field effect transistors (FETs). Many semiconductor companies came and went in the last days of vacuum tube active devices. Surprisingly, a Google search revealed that Crystalonics is alive and well in Ronkonkoma, New York. Per their website: Formed in 1958, CRYSTALONICS is a broad line semiconductor manufacturer ...

Saelig Intros Teledyne LeCroy BPA Low Energy Bluetooth Protocol Analyzer

Saelig Intros BPA Low Energy Bluetooth Protocol Analyzer from Teledyne LeCroy - RF CafeSaelig Company, Inc. has announced the availability of the BPA low energy Bluetooth Protocol Analyzer from Teledyne LeCroy - a powerful, portable protocol analyzer for wireless transmissions that adhere to Bluetooth low energy specifications. Ideal for field or lab use, the BPA low energy analyzer is USB powered, eliminating the need for an external power supply. This analyzer supports all of the mandatory Bluetooth low energy features through Bluetooth version 4.2, and ships with Frontline ...

The Benefits of Antenna Testing

Antenna Test Lab Co Anechoic Chamber - RF CafeGlenn Robb, owner of Antenna Test Lab Company, wrote a white paper titled "The Benefits of Antenna Testing" which is now available on RF Cafe. Since 2001, AntennaTestLab.com has evaluated countless antennas and RF transmitter products. With a fully anechoic chamber, antennas can be quickly developed and RF products refined and deployed. The key phrase in the paper is "...risks of non-testing ... often lead to impaired wireless system performance and poor product reputations." That applies to stand-alone, surface mount, and printed antennas. Can you afford ..."

Troll Systems Intros 8-Input Diversity Receiver

Troll Systems Intros 8-Input Diversity Receiver and Remote Antenna Site IP -Based Controller - RF CafeShown for the first time at NAB Troll's DMR series receivers combines a multi-channel microwave receiver with a remote site diversity antenna controller. The combination provides a two (2) to eight (8) channel diversity receiver for remote Electronic News Gathering (ENG) or law enforcement antenna sites. The DMR processor performs video decryption, encryption, video and audio decoding for local monitoring and secure IP transport to remote control centers. The DMR's front panel touchscreen enables live video and audio preview, control and ...

Notable Tech Quote: Glenn Robb

Notable Tech Quote: Glenn Robb - RF Cafe"Wishful thinking is not a good system test practice." - Glenn Robb, owner of Antenna Test Lab Company of Raleigh, North Carolina. Glenn happened to use that line in a note to me, and I asked permission to use it as a Notable Quote ...

Please Welcome Axiom Test Equipment as a New Advertiser

Axiom Test Equipment - RF CafeAxiom Test Equipment allows you to rent or buy test equipment, repair test equipment, or sell or trade Axiom Test Equipmenttest equipment. They are committed to providing superior customer service and high quality electronic test equipment. Axiom offers customers several practical, efficient, and cost effective solutions for their projects' TE needs and is committed to providing superior customer service and high quality electronic test equipment. Please check out Axiom Test Equipment today! ...

Empower RF Systems Remote Live Demonstrations at IMS 2017

Visit Empower RF Systems at IMS 2017 Booth 1007 for Remote Live Demonstrations - RF CafeEmpower RF Systems is conducting remote live demonstrations of our broadband, high power 1 kW, 1 to 3 GHz amplifier, Booth 1007. The amplifier will be housed in Los Angeles and viewed in the Hawaii exhibit venue with live streaming video while remotely controlling the amplifier from the exhibit floor through a standard web browser. What you will see is a demonstration of remote operation of the Empower 2170 1 kW RF amplifier in a test setup that includes a signal generator ...

IC Frequency Dividers & Counters

IC Frequency Dividers & Counters, January 1969 Electronics World - RF CafeThe subject of IC-based digital circuits was relatively new in 1969 when this story was printed in Electronics World magazine and was probably considered expert knowledge. Note that it was written by a research engineer at the Lockheed Missiles and Space Company. Today, introductory digital logic courses begin with material presented here and advance rapidly into programmable logic, ASICs microprocessors, and beyond. Even if you have already taken courses on digital logic with counters and dividers, the knowledge might ...

Thanks to BBTLine for Their Continued Support!

BBTLine - BroadBand Transmission Line Products - RF CafeBBTLine offers a unique patented combiner / splitter design that allows for more compact devices while maintaining low insertion loss, excellent return loss and excellent amplitude/phase balance. These are not standard Wilkinson-style RF splitters. 2- and 4-way, broadband 0.5 - 6 GHz, low loss (0.7 dB @ 6 GHz), excellent amplitude / θ balance (±0.1 dB, ±1°), high power (20 W as splitter), surface mount & connectorized. Please visit BBTLine today to see how they can help your project ...

Fairview Microwave Low-PIM 4.3-10 Connectors and Adapters

Fairview Microwave Launches New Low-PIM 4.3-10 Connectors and Adapters - RF CafeFairview Microwave has released 18 new 4.3-10 connectors and adapters with low-PIM performance of -166 dBc typical and a maximum operating frequency of 6 GHz. Typical applications include wireless base stations, small cells, custom cable assemblies, antenna feeder cables, mobile communications systems and distributed antenna systems (DAS). Fairview's new 4.3-10 connectors and adapters deliver VSWR as low as 1.08:1 and low coupling torque. They feature silver-plated center contacts and a tri-metal finish. They feature silver-plated center contacts and a tri-metal finish on the body ...

Stable 1-dimensional Metallic Material Created

Stable 1-Dimensional Metallic Material Created - RF Cafe"Researchers have developed the world's thinnest metallic nanowire, which could be used to miniaturise many of the electronic components we use every day. The researchers, from the Universities of Cambridge and Warwick, have developed a wire made from a single string of tellurium atoms, making it a true one-dimensional material. These one-dimensional wires are produced inside extremely thin carbon nanotubes (CNTs) - hollow cylinders made of carbon atoms. The finished 'extreme nanowires' are less ..."

Many Thanks for Alliance Test Equipment's Support!

Alliance Test EquipmentAlliance Test sells used / refurbished test equipment, we offer short- and long-term rentals. We also offer repair, maintenance and calibration. Prices discounted up to 80% off list price. Agilent/HP, Allied Test Equipment Products - RF CafeTektronix, Anritsu, Fluke, R&S and other major brands. A global organization with ability to source hard to find equipment through our network of suppliers. Please visit Allied Test Equipment today to see how they can help your project ...

NASA Mission Uncovers Dance of Electrons in Space

NASA Mission Uncovers Dance of Electrons in Space - RF Cafe"You can't see them, but swarms of electrons are buzzing through the magnetic environment - the magnetosphere - around Earth. The electrons spiral and dive around the planet in a complex dance dictated by the magnetic and electric fields. When they penetrate into the magnetosphere close enough to Earth, the high-energy electrons can damage satellites in orbit and trigger auroras. Scientists with NASA's Magnetospheric Multiscale, or MMS, mission study the electrons' dynamics to better understand their behavior. A new study, published ..."

Radar Simulator to Characterize Debris Particles in Tornadoes

Radar Simulator to Aid Characterization of Scattering Debris Particles in Tornadoes - RF Cafe"A team of researchers from University of Oklahoma's Advanced Radar Research Center have jointly developed the world’s first numerical polarimetric radar simulator. The simulator will be used to study and characterize scattering mechanisms of debris particles in tornadoes. Scattering debris from a tornado is known to cause most of the damages. A tornado's debris characteristics are generally poorly understood even though the upgradation of the radar network to a dual polarimetric radar offers ..."

Written in the Stars

Written in the Stars, September 1953 QST - RF CafeRod Newkirk was a frequent contributor to the ARRL's QST magazine. In addition to writing the "How's DX?" column from 1947 to 1978, he occasionally had humorous short stories related to Hamdom. Here, Ms. Susie Sopenwater (a sort of 'soap and water' portmanteau; i.e., pure and clean) gets interested in amateur radio after winning the Miss America pageant and finds plenty of volunteers to help her earn her license and set up a 'shack.' Susie's call sign was, WN5P!P. My guess is that the WN5 part is an allusion ...

BrightSparks Trophies Make Their Mark

BrightSparks Trophies Make Their Mark - RF Cafe"An important element of any awards ceremony, of course, is the award itself. And BrightSparks 2017 would be no different. But to celebrate innovative and young winners we wanted to avoid familiar, tried and tested trophies and statuettes. Step forward Saar Drimer, a talented designer, who agreed to customise and create the BrightSparks trophies. A distinctively unique 'supra-component' of the awards ceremony! The trophies were certainly well received on the day. Comments we overheard ..."

USAF Electronic Weapons to Get an Electromagnetic Power Boost

USAF Electronic Weapons to Get an Electromagnetic Power Boost - RF Cafe"The Air Force is working with Raytheon to integrate high power electromagnetic (HPEM) capabilities with cyber and electronic warfare weapons systems to increase the effectiveness of EW weapons through higher energy pulses and the use of new methods of backdoor penetration. Raytheon, along with other industry developers, will experiment with and develop the most efficient and effective way to integrate HPEM technology with cyber and electronic warfare weapons systems. The goal is to identify the ideal radio frequency ..."

Engineering Career and Job Hunting Advice for May 2017

Engineering Career and Job Hunting Advice for May 2017 - RF CafeReports on which jobs are seeing the fastest growth in a particular state are to be read with a bit of skepticism because intentional or not, bias and error are always an integral part of the results. The Monster job website presents just such a survey, and it is worth looking at since it does give a good idea of what types of jobs are in demand overall. It might just be accurate to boot. Evidently electrical and electronics repairers are ...

- 5 Ways to Open Your Next
    Business Presentation (unique)
- How Headhunters Use LinkedIn
    to Find Talented Candidates
- Engineering Dominates <more...>

Tech Industry Headlines

Tech Industry Headlines - RF Cafe- Archive -

Fake IC Battle Gets a New Weapon

General Dynamics Tests Military 4G Net for Broadband Capabilities over the Ocean

Google for Jobs Employs Machine Learning to Help People Find Work

China's Semiconductor Industry and 'Win-Win' Growth

U. Calgary in Canada Offers Masters Credit in Mars Architecture

Wireless Service Falls 13%, Biggest Decline in 16 Years

Skills Gap Widens in Electronics Manufacturing

Li-Ion Battery Inventor Intros Advanced Solid-State Rechargeable

FCC Issues Notice of Unlicensed Operation in Public Safety Interference Complaint

Webinar: EMSO Challenges for Military Radar and EW Systems

Webinar: EMSO Challenges for Military Radar and EW Systems - RF Cafe
Microwave Journal, R&S, and Wolfspeed present the free webinar titled Electromagnetic Spectrum Operations (EMSO) Challenges for Military Radar and Electronic Warfare Systems, on May 24 at 12:00 pm EST. Presented by Asif Anwar. "With the commercial market radio spectrum land grab continuing unabated, this webinar will look at the challenges for radar, EW and communications systems will include being able to operate effectively in an increasingly congested spectrum environment developing sharing mechanisms, while also combating new potential threats ...

ConductRF FPA Cable Assemblies, DC to 60 GHz

ConductRF FPA Cable Assemblies, DC to 60 GHz - RF CafeConductRF's FPA RF Cable Assemblies provide a cost effective high performance solution for applications typically supported by Semi-Rigid or high cost flexible precision cables. Our Multi-layer shielded cable provides both flexibility and form-ability by combining a flexible spiral foil over which is a tin plated copper braid which can be formed. This create a half-way situation, but with added benefits of lower costs, improved performance and enhanced shielding. FPA Cables are available on short lead-times with custom ...

Stanford Makes Biodegradable Semiconductor ICs

Stanford Makes Biodegradable Semiconductor ICs - RF Cafe"A Stanford University research group has created flexible, organic semiconductor devices that degrade on the addition of weak acid, such as vinegar (acetic acid). The results were published May 1 in the Proceedings of the National Academy of Sciences . The paper was co-authored with researchers from Hewlett Packard Enterprise and University of California Santa Barbara. The work is in part motivated by the need to reduce the production of electronic waste. The proliferation of electronic products, particularly smartphones on two-year upgrade cycles ..."

Neil Carleton's (VE3NCE) Radio Stamp Collection Auction May 23 & 24

Neil Carleton's (VE3NCE) Radio Stamp Collection Auction May 23 & 24 - RF CafeCanadian Ham radio operator Neil Carleton, a long-time member of the Almonte Amateur Radio Club, contacted me a few months ago about his amazing collection of radio-related stamps that has been a lifetime endeavor. Due to health issues, he has put his entire collection up for bid with Sparks Auctions, a prime handler of philatelic material. Neil's stamps are being offered on Tuesday, May 23 and Wednesday, May 24. These sets are bound in hand-designed albums and would make an excellent investment or gift for yourself, a deserving friend or relative, or even as a donation to a museum. Please take a look: Lot 846, Lots 1466, 1467, 1468, and Lot 1469 . Thanks!

Citizens Band and Business Radio Equipment

Citizens Band and Business Radio Equipment, March 1967 Electronics World - RF CafeBelieve it or not, there are still radio operators using Citizen Band (CB) and Business Radio (BR) equipment. That's right, cellphones (which are themselves radios) have not totally supplanted traditional radio for person-to-person communications. Prior to the widespread use of cellphones beginning in the mid-1990s, CB and BR were the only radios available for use by laymen without an individual license. When I worked as an electrician between high school and entering the USAF, my service truck was equipped with a radio dispatch transceiver in the LMRS band. I did not have an FCC ...

Upgrading Missile Defense Early Warning Radar

Upgrading Missile Defense Early Warning Radar - RF Cafe"Radar experts at BAE Systems will continue maintaining, upgrading, and operating a global distributed radar network that provides missile defense and early warning of enemy ballistic missile launches and potential threats in space. Officials of the U.S. Air Force 21st Contracting Squadron at Peterson Air Force Base, Colo., announced a $48.5 million contract modification Wednesday to the BAE Systems Technology Solutions & Services segment in Rockville, Md., to manage, operate, maintain and logistically support the Solid State Phased Array Radar Systems ..."

Quantum Refrigerator for Silicon Chips Discovered

Quantum Refrigerator for Silicon Chips Discovered - RF Cafe"Quantum physicist Mikko Mottonen and his team at Aalto University have invented a quantum-circuit refrigerator, which can reduce errors in quantum computing. The global race towards a functioning quantum computer is on. With future quantum computers, we will be able to solve previously impossible problems and develop, for example, complex medicines, fertilizers, or artificial intelligence. The research results published this week in the scientific journal, Nature Communications, suggest how harmful errors in ..."

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About RF Cafe

Kirt Blattenberger - RF Cafe WebmasterCopyright
1996 - 2022
Webmaster:
Kirt Blattenberger,
 BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

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