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Homepage Archive - March 2017 (page 1)

These archive pages are provided in order to make it easier for you to find items that you remember seeing on the RF Cafe homepage. Of course probably the easiest way to find anything on the website is to use the "Search RF Cafe" box at the top of every page.

Homepage Archive Pages

2017:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec
2016:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec
2015:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec
2014:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec
2013:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec

See Page 1 | 2 | 3 of the March 2017 homepage archives.

 

Friday 10

Carl & Jerry: The Blubber Banisher

Carl & Jerry: The Blubber Banisher, July 1959 Popular Electronics - RF CafeJohn Frye, as it turns out, was way ahead of his time. Many of the somewhat zany electronics devices his fictitious teenage experimenters cum hobbyists cum scientists cum Ham radio operators cum amateur sleuths Carl and Jerry came up with have turned out to products available and popular in today's consumer marketplace. This episode can be regarded as an early developmental version of a wearable calorie burner facilitation device. Jerry's "Blubber Burner" sports an un-politically-correct name and uses ...

St. Patrick's Day Activity Hopes to "Turn the Bands Green"

St. Patrick's Day Activity Hopes to "Turn the Bands Green" - RF Cafe"Radio amateurs around the world will celebrate Saint Patrick's Day on the air through the St. Patrick Award. 'We hope to turn the bands green,' the event's sponsors said. The St. Patrick Award activity will get under way at 1200 UTC on March 16 and continue until 1200 UTC on March 18. Radio amateurs or SWLs are invited to take part. Awards will be in four categories: SPD Station Award (for registered stations); Fixed Station Award; Mobile Station Award, and Short Wave Listener Award. Register to be an official participating ..."

Domain Name Valuation per Online Estimators

Domain Name Valuation per Online Estimators - RF CafeAs mentioned in the past, I put a fair amount of effort into making RF Cafe as user friendly and resourceful as possible while also providing a valuable venue for RF product and services companies to advertise. Reading articles on search engine optimization, effective user interface and user experience, webpage organization, navigation, page load speed and content organization are popular topics that the 'experts' have decided are most important to success. My ultimate philosophy has been to make RF Cafe the kind of website I enjoy visiting. A piece ...

Advanced Test Equipment Rentals Now Offers Latest in ESD Equipment

Advanced Test Equipment Rentals Now Offers Latest in ESD Equipment - RF CafeAdvanced Test Equipment Rentals (ATEC) - a leading provider of electronic test and measurement equipment rentals with products that stretch across industries from aerospace to electric, automotive and more – just upgraded its ESD equipment offerings. The ESD NX30 Electrostatic Discharge Simulator by EM Test is now available to rent from ATEC, and makes an impactful addition to ATEC's continuously growing fleet of EMC test equipment. As a leader ...

Your Chance to Win from Digi-Key Electronics

Your Chance to Win from Digi-Key Electronics - RF CafeDigi-Key extended their online contest. As a PartSim or PCBWeb user, they'd would like your feedback in discovering what is valuable and what needs improvement. The survey will take less than 2 minutes. Even if you've already registered, you're still eligible to win the new prizes. Grand Prize winner will receive a Digi-Key Insta-Lab Oscilloscope, Function Generator, Bench Power Supply and much ...

FCC to Consider How to Facilitate Mobile Broadband Deployment

FCC to Consider How to Facilitate Mobile Broadband Deployment - RF Cafe"As the new chairman of the FCC, Ajit Pai, settles into his role at the agency that regulates the telecom industry, he appears to be keen on finding ways to make sure that wireless technology will continue to advance. Specifically, the agency announced that it will consider cellular service reform during its next opening meeting, scheduled for March 23. 'The Commission will consider a Second Report and Order and Second Further Notice of Proposed Rulemaking that would facilitate mobile broadband deployment, including LTE, promote greater spectrum efficiency, and reduce regulatory burdens ..."

Thursday 9

AT&T, NTT DoCoMo, Vodafone, Nokia, Qualcomm for Unified 5G Standard

AT&T, China Mobile, NTT DoCoMo, Vodafone, Nokia, Qualcomm for Unified 5G Standard - RF Cafe"Consistent with its message that agreed-upon, industry-wide standards are the way to go with 5G, AT&T is among a slew of operators and vendors pledging to support a unified, global 5G standard achieved through 5G testing, trials and cooperation. During the Global 5G Test Summit here Wednesday, AT&T, China Mobile, NTT DOCOMO, Vodafone, Ericsson, Huawei, Intel, Keysight, MediaTek, Nokia, Qualcomm, Rohde & Schwarz, ZTE and Datang jointly declared a statement promoting unified, global 5G standards ..."

An Experiment with Gravity, January 1970 Popular Electronics - RF Cafe

An Experiment with Gravity, January 1970 Popular Electronics - RF CafeThis is pretty cool. If I owned a good receiver, I would definitely give it a try. In 1970 when this Popular Electronics article was written, a lot of Hams were still using tube receivers so the recommendation to let the equipment warm up for several hours prior to making the fine frequency adjustments was good advice. Unless I missed it, the author does not explicitly state that the frequency change measured over time is due to gravity acting on the mass of the crystal reference, but I suspect that is his intention since part of the experiment involves disconnecting ...

2016 Ig® Nobel 1st Annual Ceremony

2016 Ig® Nobel 1st Annual Ceremony - RF CafeIg Nobel Prizes are awarded by Improbable Research group. "The 2016 Ig Nobel Prizes were awarded on Thursday night, September 22, 2016 at the 26th First Annual Ig Nobel Prize Ceremony, at Harvard's Sanders Theatre." The 26th First Annual Ig Nobel Prize Ceremony will introduce ten new Ig Nobel Prize winners - Each has done something that makes people laugh then think. Winners travel to the ceremony, at their own expense, from around the world to receive their ..."

Tower Companies Healthy, but Consolidation Looms

Tower Companies Healthy, but Consolidation Looms - RF Cafe"The tower industry looks healthy heading into the second quarter, according to analysts, but the cloud of potential consolidation among wireless carriers continues to loom over the segment. Companies such as Crown Castle and American Tower have long been the foundation of the U.S. wireless industry, but Cowen and Company said in January that they've become 'everyone’s punching bag' as operators increasingly look to small cells, distributed antenna systems ..."

NuWaves Engineering Intros 20 W, C-Band Bidirectional Amplifier

NuWaves Engineering Intros 20 W, C-Band Bidirectional Amplifier - RF CafeNuWaves Engineering announced the development of their latest miniaturized C-band bidirectional amplifier (BDA) to their line of NuPower Xtender™ bidirectional amplifier products. The NuPower Xtender™ 06D05A BDA module, part number NW-BA-06D05A, follows the recent releases of both the C-band low noise amplifier (HILNA™ CX) and the C-band power amplifier (NuPower™ 06D05A). This BDA offers the performance of a traditional ...

Raspberry Pi's New Zero W Has Wi-Fi and Bluetooth

Raspberry Pi's New Zero W Has Wi-Fi and Bluetooth - RF Cafe"The Raspberry Pi foundation has launched the Raspberry Pi Zero W, a wireless-enabled version of the 65 x 30mm Zero launched in 2015. Costing $10, it gets the same Cypress CYW43438 wireless chip as Raspberry Pi 3 Model B to provide 802.11n wireless LAN and Bluetooth 4.0 connectivity. It also picks up a camera interface that was not on the original Zero. 'We imagine you’ll find all sorts of uses for Zero W,' said Foundation co-founder Eben Upton. 'It makes a better general-purpose computer because you're less ..."

Wednesday 8

Chemistry Startup Claims EUV Resist Breakthrough

Chemistry Startup Claims EUV Resist Breakthrough - RF Cafe"Startup company Irresistible Materials Ltd. (Birmingham, England) is set to claim a breakthrough in the development of resist material for extreme ultra violet (EUV) lithography at the SPIE Advanced Lithography conference in San Jose, California. Irresistible Materials (IM), a 2010 spin-off from the University of Birmingham, has developed a couple of photo-resist products for use with EUV lithography based on a novel type of resist chemistry known as a multi-trigger resist system. The resist is molecular rather than polymeric ..."

Eavesdropping on Satellites

Eavesdropping on Satellites, February 1963 Popular Electronics - RF Cafe1963 was five years since America's first communications satellite, Echo, was placed in orbit. Echo was a passive, spherical reflector that merely provided a good reflective surface for bouncing radio signals off of. By 1963, the space race was well underway and active communications satellites were being launched at a rapid pace. Spotting and tracking satellites has long been a popular pastime with two types of hobbyists: amateur astronomers using telescopes and binoculars, and amateur radio operators using antennas and receivers ...

Please Welcome ConductRF as a New Advertiser on RF Cafe!

ConductRF coaxial cables & connectors - RF CafeConductRF is continually innovating and developing new and improved solutions for RF Interconnect needs. See the latest TESTeCON RF Test Cables for labs. ConductRF makes production and test coax cable assemblies as well as standard & precision RF connectors. Over 1,000 solutions for low PIM in-building to choose from in the iBwave component library. They also provide custom coax solutions for applications where some standard just won't do. Please visit ConductRF today to see how they can help your project!

Barry Goldwater, K7UGA, May & June 1967 QST

Barry Goldwater, K7UGA, May & June 1967 QST - RF CafeA lot of famous people have been or are currently amateur radio operators. A 1958 edition of Popular Electronics published a story title "VIP's Are Hams Too!," which included Arthur Godfrey (9K4LIB), Herbert Hoover, Jr. (W6ZH), and Arthur Collins (W0CXX). I wrote an article on radio host Jean Shepherd (K2ORS), of "A Christmas Story" fame. Senator Barry Goldwater (K7UGA), of Arizona, was also an active Ham, as evidenced here in this June 1967 edition of the ARRL's QST magazine. Senator Goldwater also appeared in the May 1967 issue of QST ...

IPP Intros SMD 90° Coupler for 2-6 GHz, 150 W

IPP Intros SMD 90° Coupler for 2-6 GHz, 150 W - RF CafeInnovative Power Products introduces their newest Model IPP-7150. The IPP-7150 is 3dB, 90 degree surface mount hybrid coupler which operates from 2.0 – 6.0 GHz. at 150 watts CW and has improved Amplitude Balance of less than +/- 0.4 dB across the full band. The IPP-7150 will combine two signals up to 150 watts CW of total output power and is in a Surface Mount (SMD) package which is 1.250 x 0.200 x 0.208 inches. Insertion ...

Engineering Jobs & Salaries Keep Growing

Engineering Jobs and Salaries Keep Growing - RF Cafe"According to data from the Bureau of Labor Statistics (BLS), jobs for engineers are expanding, and so are salaries. The BLS figures are similar to results from the Design News study presented in the article, Engineering Career & Salary Survey – Are You Getting Paid Enough? . The average salary in our survey was $98,000, which is quite a bit higher than the average engineering salary of $85,000. The difference is likely because the Design News respondents included a preponderance of electrical and ..."

Google Project Loon Internet Balloon Crashed in Amazon

Google Project Loon Internet Balloon Crashed in Amazon - RF Cafe"A hot air balloon launched by Project Loon to one day bring the internet to remote villages in the Amazon has landed in the rainforest. The large balloon fell from the skies to the jungle floor following recent flight tests, to the surprise of the local community. The huge inflatable descended from 11 miles high, above a remote town in Brazil. X, an innovation lab under Google's parent company Alphabet and the group behind Project Loon, has apologised for 'surprising' locals in the Autazes area, in the north-central Brazilian state of Amazon ..."

Tuesday 7

TMS Touts Expanding Satcom Offerings at Satellite 2017 Show

At Satellite 2017, TMS Touts Expanding Satcom Offerings as Multiple Business Units Integrate Satcom Expertise - RF CafeThis week at Satellite 2017, Teledyne Microwave Solutions (TMS) is featuring a wide range of innovative Satcom offerings reflecting the company's ongoing integration of Satcom expertise across many business units. Each of the business units of TMS have long had Satcom capabilities and engineering expertise, including Teledyne Cougar, Teledyne MEC, Teledyne Defence & Space, Teledyne Paradise Datacom, Teledyne Labtech, and the former Teledyne Microwave and Teledyne KW Microwave. As a result of the operational consolidation ... 

Many Thanks to MECA Electronics for Their Long-Time Support!

MECA ElectronicsSince 1961, MECA (Microwave Electronic Components for America) has manufactured an extensive line of RF & microwave components for in-building, satellite, radar, radio, telemetry, mobile radio, aviation & ATC. Attenuators, directional & hybrid couplers, isolators & circulators, power MECA Electronics V-Line componentsdividers & combiners, loads, DC blocks, bias Ts and adapters & cables. MECA has long been the 'backbone' of high performance wired and air-interfaced networks such as. Please visit MECA today to learn how they can help with your projects ...

Understanding Frequency-Control Crystals

Understanding Frequency-Control Crystals, May 1964 Electronics World - RF CafeEven in this era of incredibly complex electronics, nearly every communications circuit, whether analog, digital, or a mix thereof has a crystal oscillator somewhere at its heart. Technology has advanced significantly in the design and manufacture of crystals, but fundamentally the key parameters of center frequency, phase noise, stability over temperature and time (aging), susceptibility to microphonics effects and magnetic fields, etc., are the same. This article is a good primer on crystals that explains how they work and how they are used ...

UC San Fran Lays off 79 IT Workers After They Train Offshore Replacements

UC San Fran Lays off 79 IT Workers After They Train Offshorers - RF Cafe"At the University of California's San Francisco campus, 79 IT employees lost their jobs this week, some of them after explaining to their replacements at Indian outsourcing firm HCL how to do their jobs. The union representing the employees, University Professional and Technical Employees CWA Local 9119, says it's the first time a public university has offshored American IT jobs. In a statement sent yesterday, UPTE-CWA says the layoffs could ..."

Anatech Electronics Intros New Cavity, Ceramic, Crystal Bandpass Filters

Anatech Electronics Product Update for February 28, 2017 - RF CafeAnatech Electronics offers the industry's largest portfolio of high-performance standard and customized RF and microwave filters and filter-related products for military, commercial, aerospace and defense, and industrial applications up to 40 GHz. Anatech has introduced 3 new filter designs: a 1059 MHz cavity bandpass filter with N type connectors, a surface mount 1.25 MHz crystal bandpass filter, and a surface mount 4,450 MHz ceramic bandpass filter. Custom designs are available on request ...

Lithium-Ion Battery Inventor Intros Fast-Charging, Noncombustible Batteries

Lithium-Ion Battery Inventor Intros Technology for Fast-Charging, Noncombustible Batteries - RF CafeIt sure would be nice to have batteries that don't pose a bigger risk of burning down your house, car, or cellphone than glow fuel. "A team of engineers led by 94-year-old John Goodenough [what a great name!], professor in the Cockrell School of Engineering at The University of Texas at Austin and co-inventor of the lithium-ion battery, has developed the first all-solid-state battery cells that could lead to safer, faster-charging, longer-lasting rechargeable batteries for handheld mobile devices, electric cars and stationary energy storage ..."

Monday 6

Skyworks Unveils SkyOne® Ultra 3.0

Skyworks Unveils SkyOne® Ultra 3.0 - RF CafeSkyworks Solutions has introduced SkyOne® Ultra 3.0, a highly integrated front-end solution for premium mobile device and smartphone manufacturers worldwide utilizing Skyworks' powerful SkyBlue™ enabling technology for industry-leading efficiency. SkyOne® Ultra 3.0 is a fully optimized front-end system that incorporates all of the high performance RF and analog functionality including power amplification, duplex filtering and antenna switching into a single ...

Triboelectric Nanogenerators Boost Mass Spectrometry Performance

Triboelectric Nanogenerators Boost Mass Spectrometry Performance - RF Cafe"Triboelectric nanogenerators (TENG) convert mechanical energy harvested from the environment to electricity for powering small devices such as sensors or for recharging consumer electronics. Now, researchers have harnessed these devices to improve the charging of molecules in a way that dramatically boosts the sensitivity of a widely-used chemical analysis technique. Triboelectric nanogenerators (TENG) convert mechanical energy harvested from the environment to electricity ..."

ResearchGate: A Facebook-Style Shift in How Science Is Shared

ResearchGate: A Facebook-Style Shift in How Science Is Shared - RF Cafe"Ijad Madisch, a founder of ResearchGate, a social network, says it has signed up 12 million scientists, or roughly 60 percent of all such potential users worldwide. Calvin Coffey, a professor of surgery at the University of Limerick in Ireland, has a world of gadgetry, scientific equipment and medical tests at his disposal. Recently, he added another tool: social media. During a months-long project to prove that the mesentery - folded tissue that connects the intestines to the wall of the ..."

Electronics-Themed Comics, December 1949 Radio & Television News

Electronics-Themed Comics, December 1949 Radio & Television News - RF CafeComics in modern magazines are a rather rare phenomenon for some reason, but they were fairly regular features up until a couple decades ago. This set of electronics-themed comics is from the December 1949 edition of Radio & Television News. The first one would probably not make sense to someone not familiar with the extents to which some radio operators go to deploy antennas. During field day events and other mobile scenarios, Hams have been using kites and balloons to create 1/4-, 1/2-, or even full-wave vertical antennas with wires run ...

Saelig Intros GW Instek MFG-2000 Multi-Channel RF Function Generators

Saelig Intros GW Instek's New MFG-2000 Multi-channel RF Function Generators - RF CafeSaelig Company has introduced the new MFG-2000 Series Multi-channel Function Generators from GW Instek that includes the MFG-21XX entry-level models and the MFG-22XX advanced models with up to five functional channels. Channels 1 and 2 provide high-performance arbitrary function generators up to 60 MHz; Channel 3 - the RF signal generator channel, with output up to 320 MHz, is a full function signal source; identical to CH1/CH2, it can output sine, square, ramp, pulse, noise ...

The World Needs More Engineers Who Can Communicate

The World Needs More Engineers Who Can Communicate - RF Cafe"When it comes to engineers, we aren't known for our communication skills. This may seem standard with the introverted engineering stereotype, but communication is perhaps the most necessary skill an engineer can have - and we need more engineers that can communicate. I am of course not talking about engineers ability to speak a language or form basic words. Rather, too many times there have been incredibly smart engineers that simply can't communicate what is happening ..."

Sunday 5

RF Cafe Engineering Crossword Puzzle w/Weekly Headlines March 5, 2017

RF Cafe Engineering Crossword Puzzle w/Weekly Headlines March 5, 2017For the sake of avid cruciverbalists amongst us, each week I create a new crossword puzzle that has a theme related to engineering, mathematics, chemistry, physics, and other technical words. Clues in this puzzle with an asterisk (*) are pulled from this past week's (2/27 - 3/3) "High Tech News" column on the RF Cafe homepage (see the Headline Archives page for help) ...

Friday 3

Many Thanks to Bittele Electronics for Continued Support!

Bittele Electronics PCB Fabrication - RF CafeSince 2003, Bittele Electronics has consistently provided low-volume, electronic contract manufacturing (ECM) and turnkey PCB assembly services. It specializes in board level turnkey PCB assembly for design engineers needing low volume or prototype multi-layer printed circuit boards. Free Passive Components: Bittele Electronics is taking one further step in its commitment of offering the best service to clients of its PCB assembly business. Bittele is now offering common passive components to its clients FREE of Charge ...

CPDH Report: "Cell Phones and Health"

CPDH Report: 'Cell Phones and Health' {Draft and Not for Public Release} - RF CafeA few days ago I posted a headline about a judge requiring the California Dept. of Public Health to release a "Cell Phones and Health" report. Today it appeared on a Google Drive - all 2 pages of it. Basically, it amounts to a simple fact sheet warning people that some studies have suggested a link between cell phone radiation and some forms of cancer, and offers tips on how to minimize exposure and reduce risk. This appears to be much ado about nothing, or the paper that was released is not the document sought, but is being passed off as it. How's that for a conspiracy theory? ...

Micro-Waves Span the English Channel

Micro-Waves Span the English Channel, September 1935 Short Wave Craft - RF CafeMost of us Baby Boomers remember a time when cell towers did not present a ubiquitous (and, frankly, ugly) presence across the landscape. Microwave relay towers for television and telephone links could be spotted sitting atop hilltops and mountain ridges in some areas, and giant television and radio station towers sat behind broadcast stations, and multi-element antennas dotted house rooftops everywhere. Our grandparents (Millennials' great grandparents) remember when even microwave relay towers were missing ...

Practical Digital Wireless Signals

Practical Digital Wireless Signals - RF CafePractical Digital Wireless Signals, by Earl McCune, answers the question, "Do you need to know what signal type to select for a wireless application?" Quickly develop a useful expertise in digital modulation with this practical guide, based on the author's experience of over thirty years in industrial design. You will understand the physical meaning behind the mathematics of wireless signals and learn the intricacies and tradeoffs in signal selection and design. Six modulation families and twelve modulation types are covered ...

MWC 2017: 5G - Who Wants It, Who'll Pay?

MWC 2017: 5G - Who Wants It, Who'll Pay? - RF Cafe"The hot topic at Mobile World Congress this year is not a new phone - apart from the Nokia 3110, they all look the same. Nor is it a new technology like virtual reality - compared with last year, there seem to be fewer VR headsets around. No, the biggest thing in Barcelona is something invisible that doesn't yet exist, 5G. The hype about the potential of the next generation of mobile networks has reached new heights, with every major company exhibiting here eager to explain how it will be at the cutting edge of the coming 5G ..."

Free Magazine Subscriptions to Qualified Engineers & Technicians

Engineering White Papers & Books, March 2017 - RF CafeThe free whitepapers, pamphlets, books, magazines, and chapter examples listed here are a small sample of a lot of new items that are offered for FREE through TradePub. The publishers make them available to qualifying people as a promotional campaign for their full line of offerings. Topics include careers, manufacturing, engineering, management, meetings and travel. Note: I earn a few pennies (literally) when you download one of these or the many other pubs available, so please help yourself.

BlackBerry is Back, Unveils KEYone Smartphone

BlackBerry is Back, Unveils KEYone Smartphone - RF Cafe"If you're getting sick of your touchscreen phone, there's good news - BlackBerry's latest device has revived the physical keyboard. TCL Communication has unveiled the BlackBerry KEYone at the Mobile World Congress in Barcelona this week. The device features a QWERTY keyboard alongside a touchscreen display, in the hopes of making the phone easier to use than standard touch-controlled phones. The phone has an aluminium frame and soft textured back, making it durable ..."

Thursday 2

Empower RF Systems Intros Pulsed L-Band Multi-kW Scalable Amps

Empower RF Systems Intros a Pulsed L-Band Multi-kW Scalable Amplifier - RF CafeEmpower RF announces the market release of the New Scalable Pulsed L Band Amplifier with an expandable system hardware architecture designed to save you money - "you buy only the power you need today" and add power amplifier blocks later when your test or application requires more output power. Adding 3U power amplifier blocks is accomplished easily and simply with no phase matching required. In addition to scalability, this amplifier offers an inherently rugged design and is based on patented ...

"Radio and the People's Railway", Classic Trains Magazine

Radio and the People's Railway, Classic Trains - RF CafeRF Cafe visitor and frequent e-mailer Joe Birsa (N3TTE) sent a note saying that the Spring 2017 issue of Classic Trains magazine contains an article titled "Radio and the People's Railway," by Greg Gormick. I do not have a copy on-hand, so I went to Wikipedia for some information on the Canadian National Railways Radio Department, where it says in part: "The Canadian National Railways Radio Department was the first national radio network in North America. It was developed, owned and operated by the Canadian National Railway between 1923 ..."

Short-Cuts in Radio

Short-Cuts in Radio, June 1936 Radio-Craft - RF CafeIt is hard to believe in 1936, a time when cars were huge and dashboards had almost nothing behind them except some heater ducts, that access to something as simple as a radio speaker would be difficult. Evidently it could be, according to the first-place winner of "Short-Cut" in Radio-Craft magazine. There was not then the rat's nest of wires, air bags, and control cables found in modern autos. Voluminous trunks back in the day, and engine compartments that you could almost stand in while changing spark ...

ConductRF Listing Added to Coaxial Cables & Connectors Pages

ConductRF coaxial cables & connectors - RF CafeConductRF is continually innovating and developing new and improved solutions for RF Interconnect needs. See the latest TESTeCON RF Test Cables for labs. ConductRF makes production and test coaxial cable assemblies as well as standard & precision RF connectors. Over 1,000 solutions for low PIM in-building to choose from in the iBwave component library. They also provide custom coax solutions for applications where some standard just won't do. ConductRF has been added to RF Cafe's Coaxial Cable Assemblies and the RF Connectors & Adapters vendor pages.

Midland Space Radar to Protect from Space Junk

Midland Space Radar to Protect from Space Junk - RF Cafe"Violent collisions with orbiting debris could await future travellers into space, if the growing problem of 'space junk' isn't solved. But one Californian firm believes it might have a solution to keeping tabs on some of the millions of objects believed to have amassed around the Earth. The recently constructed Midland Space Radar could help LeoLabs track up to 250,000 objects in low earth orbit - around 95% of the total, according to the company, which tracks debris in low Earth orbit (LOE) ..."

The 5G Frontier: Millimeter Wireless

The 5G Frontier: Millimeter Wireless - RF CafeIt has been a long time since I read a Robert Lucky article: "Almost limitless bandwidth beckons -if we can tame a wild region of the spectrum. There is an eternal quality to how technology evolves. As existing areas get overworked, new frontiers open up at the fringes. Then innovators rush in to occupy the new territory before it, in turn, becomes overworked. There is an example of such a frontier today in wireless communications. IEEE's 5G wireless initiative has the goal  ..."

Visit The DHTS Store for Obsolete and Hard-to-Find Parts

The DHTS Store - RF CafeThe DHTS Store, operated by Dave Hanley (that's the 'DH' part) out of Montreal, Canada, is devoted to bringing hard-to-find surplus, discontinued and vintage electronic components to the hobbyist, restorer or experimenter. Transistors, vacuum tubes, switches, cables, transformers, manuals, power supplies, TV tuners, and even grab bags of parts. Find small lots and unique parts on our eBay store. The DHTS Store has been added to RF Cafe's "Obsolete Components" vendor page.

Directed Energy Atmospheric Lens Could Revolutionize Battlefields

Directed Energy Atmospheric Lens Could Revolutionise Future Battlefields - RF Cafe"Within the next fifty years, scientists at BAE Systems believe that battlefield commanders could deploy a new type of directed energy laser and lens system, called a Laser Developed Atmospheric Lens which is capable of enhancing commanders' ability to observe adversaries' activities over much greater distances than existing sensors. At the same time, the lens could be used as a form of 'deflector shield' to protect friendly aircraft, ships, land vehicles and troops from incoming attacks by high power laser weapons that could also become ..."

Wednesday 1

Judge Orders CA to Release Papers Discussing Risk of Cell Phone Use

Judge Orders CA to Release Papers Discussing Risk of Cell Phone Use - RF Cafe"A Superior Ct judge ordered the state to release papers discussing the risk of cell phone use. The documents were written by the state’s Environmental Health Investigations department and are believed to contain cell phone radiation warnings and recommendations for public use. But the state refused to hand them over when requested by a director at Univ of CA at Berkeley's School of Public Health. So Joel Moskowitz Phd sued the state below the CA Public Records Act. Moskowitz, the UC Berkeley School ..."

Short Waves at the Hauptmann Trial

Short Waves at the Hauptmann Trial, June 1935 Short Wave Craft - RF CafeFebruary 13, 1935 was probably the first case of a major news organization incorrectly reporting a courtroom verdict because of a radio communications fail - the birth of Fake News! The Associated Press (AP) thought it was being uniquely creative - and sneaky - during "The Trial of the Century" involving the kidnapping and murder of Charles Lindberg's young son. A reporter secreted in a miniature shortwave transmitter, concealed within a leather brief case. A receiver station above the courtroom stood ready ...

everything RF Intros RSS News Feeds

everything RF Intros RSS News Feeds - RF Cafeeverything RF has introduced three RSS (Rich Site Summary, aka Really Simple Syndication) news feeds that can be subscribed to for receiving the latest information automatically. The everything RF News RSS feed contains replicas of the industry news items and press relapses which appear on the homepage. The everything RF Products RSS feed highlights components added to their searchable database. The everything RF Products and News RSS feed combines the other two RSS feeds.

Can You Become an Engineer Without an Engineering Degree?

Can You Become an Engineer Without an Engineering Degree? - RF CafeThis writer thinks electrical engineering is the easiest field to get the title of 'engineer' without having a degree - compared to civil, mechanical, and chemical engineering. True or hogwash? "Engineering is a time-old field that used to require years of apprenticeship in the industry but now requires years of school just to become licensed. However, could you become an engineer without an engineering degree? If we are going to examine this question, we need to set some groundwork for who exactly we consider an engineer ..."

Qorvo Accelerates Race to 5G with Industry’s First 5G Front End

Qorvo Accelerates Race to 5G with Industry’s First 5G Front End - RF Cafe"Qorvo today announced the industry's first 5G RF front end for smartphones, laptops, tablets and other wireless mobile devices. Qorvo's highly integrated, high performance QM19000 RFFE delivers high linearity, ultra-low latency, and extremely high throughput to meet or exceed the developing requirements of upcoming 5G applications. Qorvo is paving a path to 5G by helping define 5G standards as a delegate to 3GPP and through close collaboration with the leading wireless infrastructure manufacturers, network ..."

3 Layers of Graphene Reveals New Kind of Magnet

3 Layers of Graphene Reveals New Kind of Magnet - RF Cafe"Scientists have discovered the magnetism of electrons in three layers of graphene. This study reveals a new kind of magnet and provides insight on how electronic devices using graphene could be made for fundamental studies as well as various applications. Metals have a large density of electrons and to be able to see the wave nature of electrons one has to make metallic wires that are only a few atoms wide. However, in graphene ..."

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Kirt Blattenberger - RF Cafe WebmasterCopyright
1996 - 2022
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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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