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Today in Science History

Tech Industry Headlines

Tech Industry Headlines - RF Cafe- Archive -

Telecoms Industry Not Expected to Fully Recover Until 2023

RadioShack Purchased by Online Retailer

France to Seek EU Riposte if U.S. Punishes French Digital Tax

• China’s Guangdong Province Reaches over 110,000 5G Base Stations

Moore's Law Overheated Not Broken

• IBM Stock Slides as Amazon "Lays Groundwork" for Own Quantum Computer

• The Current State of 5G Deployments in UK

M-Code-Capable GPS Receivers Now Available

• $43B: The Pandemic's Impact on Telecoms Sector

Get Your Custom-Designed RF Cafe Gear!

Custom-Designed RF-Themed Cups, T-Shirts, Mouse Pads, Clocks (Cafe Press) - RF CafeThis assortment of custom-designed themes by RF Cafe includes T-Shirts, Mouse Pads, Clocks, Tote Bags, Coffee Mugs and Steins, Purses, Sweatshirts, and Baseball Caps. Choose from amazingly clever "We Are the World's Matchmakers" Smith chart design or the "Engineer's Troubleshooting Flow Chart." My "Matchmaker's" design has been ripped off by other people and used on their products, so please be sure to purchase only official RF Cafe gear. My markup is only a paltry 50¢ per item - Cafe Press gets the rest of your purchase price. These would make excellent gifts for husbands, wives, kids, significant others, and for handing out at company events or as rewards for excellent service. It's a great way to help support RF Cafe. Thanks...

World's Smallest Atom-Memory Unit Created

World's Smallest Atom-Memory Unit Created - RF Cafe"Faster, smaller, smarter and more energy-efficient chips for everything from consumer electronics to big data to brain-inspired computing could soon be on the way after engineers at The University of Texas at Austin created the smallest memory device yet. And in the process, they figured out the physics dynamic that unlocks dense memory storage capabilities for these tiny devices. The research published recently in Nature Nanotechnology builds on a discovery from two years ago, when the researchers created what was then the thinnest memory storage device. In this new work, the researchers reduced the size even further, shrinking the cross section area down to just a single square nanometer..."

Not Such A Smooth Operator

Not Such A Smooth Operator (Kirt's Cogitations #228) - RF CafeSomething happened at work that reminded me of a funny event from way back during my time at Westinghouse Oceanic Division (now part of Northrop Grumman), in Annapolis, MD. There is a moral to this story. During my electronics technician days there, I spent the first couple years building PCBs, wiring harnesses, and system-level assemblies for Navy sonar systems. We had some really slick stuff like towed vehicles with transducer arrays along the sides, nose cones for smart torpedoes, flow sensors, proximity fuse elements, etc. One of my tasks for a while was to build the transducer arrays, which entailed building the hundreds of tiny transducer elements. The assemblies were made of a machined aluminum base plate, onto which a precisely cut low density foam block was attached. On the top of that was a set of two machined aluminum plates that sat on either side of a piezoelectric ceramic transducer element...

L3Harris Needs an Advanced Concept Engineer

L3Harris Needs a Scientist/Advanced Concept Engineer (ACE) - RF CafeL3Harris is dedicated to recruiting and developing diverse, high-performing talent who are passionate about what they do. We are in need of a Scientist, Advanced Concept Engineer (ACE) at our Van Nuys, CA location. L3Harris Technologies is an agile global aerospace and defense technology innovator, delivering end-to-end solutions that meet customers' mission-critical needs. The ACE will identify and/or define customers emerging needs and develop solutions to those needs. The ACE will maintain a macro view of existing and emerging products and technologies. The ideal candidate will have significant experience and knowledge in the Radar Engineering field. Although not a requirement, additional knowledge of Electronic Warfare (EW) or Electronic Support Measures (ESM) systems will be considered a plus. This position will focus on breadth rather than depth and will have technical interface to customers to discover, qualify, and pursue business opportunities...

Many Thanks to Anatech Electronics for Long-Time Support!

Anatech Electronics logo - RF CafeAnatech Electronics (AEI) manufactures and supplies RF and microwave filters for military and commercial communication systems, providing standard LP, HP, BP, BS, notch, diplexer, and custom RF filters, and RF products. Standard RF filter and cable assembly products are published in our website database for ease of procurement. Custom RF filters designs are used when a standard cannot be found, or the requirements dictate a custom approach for your military and commercial communications needs. Sam Benzacar's monthly newsletters address contemporary wireless subjects. Please visit Anatech today to see how they can help your project succeed. 

New Standards for TV Antennas

New Standards for TV Antennas, November 1954 Radio & Television News - RF CafeThe RETMA referenced in this 1954 Radio & Television News magazine article entitled "New Standards for TV Antennas" was commonly known back in the day, but not many would recognize it nowadays. RETMA, founded in 1953 at the dawn of the commercial television age, was the Radio Electron[ics] Television Manufacturing Association. It set standards for electronics components like resistors (e.g., the 1%, 2%, 5%, 10% series), capacitors, inductors, equipment racks, and antennas. After many name iterations, what began as the Radio Manufacturers Association (RMA), it changed to RETMA in 1953, then to Electronic Industries Association (EIA, well-known for its 19" rack standards) in 1957, and today it is known as the Consumer Technology Association (CTA). The cost of letterhead and promotional material changes over the years must have been enormous ;-) Tracing the full history is difficult, but between Wikipedia and the JEDEC websites you can get a pretty good picture. The "Antenna Section" spoken of here is the area of the RETMA manual pertaining to antennas...

Gowanda Launches More Broadband Conicals

Gowanda Launches More Broadband Conicals - RF CafeGowanda Electronics, a designer and manufacturer of precision electronic components for broadband radio frequency and power applications, announces the introduction of a new broadband microwave RF conical inductor series - C070 - available in Surface Mount (C070SM) and Flying Lead (C070FL) configurations to enhance utility for the electronic design community. Gowanda's new C070 series was developed to address market needs and industry trends calling for ever-increasing performance from broadband conical components. It was designed for use in communication applications for bias T's (filter signals, remove noise), broadband chip manufacturing, communication platforms, high frequency, microwave circuitry...

IEEE: 5G, IoT with AI/ML to Be Most Important 2021 Technologies

IEEE Survey: 5G, IoT with AI/ML to Be Most Important 2021 Technologies - RF Cafe"IEEE has released the results of a survey that they conducted with Chief Information Officers (CIOs) and Chief Technology Officers (CTOs) in the U.S., U.K., China, India and Brazil. The objective of the survey was to identify the most important technologies for 2021, understand the impact of the COVID-19 pandemic on the speed of their technology adoption and figure out which industries are expected to be most impacted by technology in the year ahead. Among total respondents, nearly one-third (32%) say AI and machine learning, followed by 5G (20%) and IoT (14%). Manufacturing (19%), healthcare (18%), financial services (15%) and education (13%) are the industries that most believe will be impacted..."

Radar Reaches the Moon

Radar Reaches the Moon, April 1946 Radio News - RF Cafe"These pulses speed toward the moon at the fantastic speed of light… through the ionosphere and on into the unknown void surrounding the earth's atmosphere." Hard as it might be to imagine nowadays, in 1946 there was no empirical data regarding the Earth's upper atmosphere other than the few instrumented sounding rockets that had been launched for studies. Orbiting man-made communications satellites were still a decade away when engineers at the Evans Signal Corps Engineering Laboratory in New Jersey made the first Earth-Moon-Earth (EME, aka "moon bounce") signal bounce using a massive radar and antenna that blasted 10 MW EIRP pulse at the lunar surface. It was a big deal then; it's no big deal today. Amateur radio hobbyists routinely conduct EME communications from the comfort of their home-based Ham shacks, using equipment vastly superior to and less expensive than the 1946 setup...

Heathkit: An Employee's Look Back

Heathkit: An Employee's Look Back - RF CafeRF Cafe website visitor and contributor Joseph B. sent me a note about this article by Lou Frenzel on the Electronic Design website entitled, "Heathkit: An Employee's Look Back." It begins: "For those of you who do not know or remember, Heath Company was the largest kit company in the world. Heath designed and put practically every type of electronic product into kit form. Its products, called Heathkits, were exceptionally popular and many are still in use today. Over the years, Electronic Design has published many Heathkit-related articles and blogs. Recently, I had a chance to talk with Chas Gilmore, who was a Heath executive. For those of you who fondly remember Heathkit and miss its products, here's a look back at this amazing company and the lessons it offers..."

RF Cascade Workbook 2018

RF Cascade Workbook 2018 Is Available Now! - RF CafeRF Cascade Workbook 2018 is the next phase in the evolution of RF Cafe's long-running series, RF Cascade Workbook. Chances are you have never used a spreadsheet quite like this. It is a full-featured RF system cascade parameter and frequency planner that includes filters and mixers for a mere $45. Built in MS Excel, using RF Cascade Workbook 2018 is a cinch and the format is entirely customizable. It is significantly easier and faster than using a multi-thousand dollar simulator when a high level system analysis is all that is needed. An intro video takes you through the main features...

Teledyne Defense Electronics Launches "Virtual Trade Show"

Teledyne Defense Electronics Launches "Virtual Trade Show" - RF CafeTeledyne Defense Electronics (TDE) this week unveiled a new interactive Virtual Trade Show online as a vehicle to promote key product lines and capabilities to customers in a permanent, ongoing manner. Once customers enter the Virtual Trade Show (VTS) they begin an immersive online experience, the perception of being physically present in a non-physical world. That experience includes a 360º panorama view that surrounds the VTS user, enabling customers to "look" left, right, up, down, and move freely from one area on the VTS floor to another navigating by a laptop mouse. This multi-media experience showcases the flagship offerings of TDE's 15 business units, each of whom have their own booth...

Please Thank Res-Net Microwave for Their Long-Time Support!

Res-Net Microwave Components - RF CafeRes-Net Microwave has a complete line of precision RF & microwave components including attenuators, terminations, resistors, and diode detectors for commercial, military, and space applications. Products range from the small flange type to large 2,000 watt connectorized power attenuators and/or terminations at frequencies up to 26.5 GHz. In-house photo etch and laser trim capability. The company is a leader in development and production of the films required for these type of RF/microwave components. Please check out Res-Net Microwave's website to see how they can help with your current project.

RCA Radiograms

RCA Radiograms, October 1947 Radio-Craft - RF CafeRadio Corporation of America (RCA) was not the inventor of the telegram, but it did decide that the status quo transmitting and delivery services available like the Marconigram were in need of improvement. Accordingly, in 1929 the company initiated its RCA Radiogram, as promoted in this 1947 issue of Radio-Craft magazine. A promotional brochure printed by RCA in 1950 entitled, "What it is - What it does," contrails a lot of detail about the radiogram, including many photos of the operational offices. RCA Radiograms initially could be sent from ship to shore, shore to shore, ship to ship, or shore to ship. No mention was made of being able to send them to/from aircraft. At the time, the cost was 21¢ per word. As with most things, authentic RCA Radiograms...

Radio Boys Book Series

Radio Boys Book Series, Kirt's Cogitations #323 - RF CafeFor many years Melanie and I have been collecting and reading The Radio Boys series of thirteen books, which were written in the 1920s by Allen Chapman. It was a time in history when the miracle of radio communications was capturing - even enrapturing - the public with its seemingly miraculous ability to convey messages across town and around the world without the need for wires, hence "wireless." The stories center around four teenage buddies, namely Bob Layton, Joe Atwood, Herb Fennington, and Jimmy Plummer (aka Doughnuts") who, with the assistance of a local pastor, Dr. Dale, took an avid interest in radio and built from scratch a successful crystal radio. Their enthusiasm compounds upon itself as adventures and experiences using wireless foster interest in building better receivers and then building transmitters for sending Morse code and audio ("phone"). In order to appeal to his intended audience - primarily young boys - villains, good guys, hapless bystanders, government agents, local law enforcement, family, and even the occasional damsel in distress...

Withwave High Performance Cable Assemblies to 110 GHz

Withwave High Performance Cable Assemblies to 110 GHz - RF CafeWithwave's W6 Series are complete line of high performance flexible microwave cable assemblies. Specially, W601 Series have low density PTFE structure to achieve velocity propagation of 80%. These series have excellent RF performance up to 110 GHz with 1.0 mm Connectors. Features include silver-plated copper  center conductor, low density PTFE dielectric, silver-plated copper outer conductors, and an FEP jacket. Please contact Withwave for your project's needs.

The Wavelength Factor - Part II

The Wavelength Factor - II, May 1952 QST - RF CafePart 1 of this 3-part article, titled "Influence of the Antenna of the Choice of Wavelength for Best Communications," appeared in the February 1952 issue of QST magazine. Unfortunately, I do not yet own that edition. However, I do have Part 3, which subsequently appeared in the August 1952 edition. It will eventually get posted here. QST does not have a publicly available archive, but if you happen to be an ARRL member, you can access Part 1 after signing in. In this series, author Yardley Beers discusses propagation effects, modulation systems, and receiver techniques. A particularly interesting topic included in this installment is that of using a form of pulse modulation in FM broadcasting in order to exploit the 'capture effect' whereby a signal in the presence of noise will tend to suppress the noise. I don't think modern stations use that method, possibly because of incompatibility with stereo channels and data added for digital readouts...

Salary & Career Survey 2020 Onshoring

Salary & Career Survey 2020 Onshoring (SourceToday) - RF CafeThe SourceToday website has posted their 2020 Salary & Career Trends survey. It is broken out into five different sections: The Impact of Onshoring on American Manufacturers, How Automation is Affecting the Purchasing Profession, Key Demographic Trends Impacting Purchasing Professionals, Compensation Trends for the Purchasing Profession and Workforce Dynamic Trends. A slideshow summary of results is openly accessible, but you will need to register to download the full report..."

Qorvo / Custom MMIC CMD242K4 GaAs Distributed Amplifier - RF Cafe MPDevice microwave devices - RF Cafe
Windfreak Technologies Berkeley Nucleonics Model 865 Signal Generator - RF Cafe
About RF Cafe
Kirt Blattenberger - RF Cafe Webmaster
Copyright: 1996 - 2024
    Kirt Blattenberger,

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 World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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