"Entangled photon pairs have been separated and sent
to cities in China more than 1200 km apart. This is about 10 times further than had been achieved
previously. The feat was performed using pairs produced on board a Chinese satellite and could
lead to the development of long-distance
quantum cryptography. In August 2016, China launched the world's first
satellite dedicated to testing the fundamentals of quantum communication in space. On board
the $100M Quantum Experiments at Space Scale (QUESS) spacecraft ..."
Amateur radio operators take note: Heathkit, which
in years past was a prime supplier of homebuilt ham radio gear, has just announced plans to
manufacture its first piece of test equipment in three decades. "Now there's the Heathkit®
HM-1002: Intuitive, intelligent, affordable, accurate measurement. The next-generation
Heathkit® HM-1002 Precision RF Meter™ picks up where our venerable
SWR / wattmeters of yesteryear -- and everyone else's -- stopped. Incredible new features,
yet simple for beginners to assemble and understand. And you can build and maintain it yourself." ...
"On Tuesday, the
Radio Equipment Directive became mandatory throughout the European Union.
The R&TTE directive will no longer be used in the European market. The update was originally
published back in May of 2014. The update was published by ETSI, which is responsible for
globally-applicable standards in Information and Communications Technologies. It is officially
recognized as a European Standards Organization. ETSI has more than 800 member companies and
organizations from 68 companies, and is an independent, not-for-profit organization ..."
NuWaves Engineering, an international Radio Frequency
(RF) and Microwave solutions provider, announces the completion of the IRaD phase for their
miniaturized C-band bidirectional amplifier (BDA), to be added to their line of NuPower XtenderTM
bidirectional amplifier products. The NuPower Xtender™ C20RX01 BDA module, part number
NW-BA-C-20-RX01, follows the recent releases of both the C-Band Low Noise
Amplifier and the C-Band Power Amplifier (NuPowerTM C20R01) as NuWaves looks to push their
presence and expertise to higher-frequency ...
"If electric cars could recharge while driving down
a highway, it would virtually eliminate concerns about their range and lower their cost, perhaps
making electricity the standard fuel for vehicles. Scientists at Stanford University have
overcome a major hurdle to such a future by
wirelessly transmitting electricity to a nearby moving object. In addition
to advancing the wireless charging of vehicles and personal devices like cellphones, this
new technology may untether robotics in manufacturing, which are also on the move. Scientists
still need to ..."
crossword puzzle features a theme based on the products and services offered by one of
RF Cafe's supporting advertisers. Clues for words pertaining to the featured company are marked
with an asterisk (*). As is the case every week, the puzzle contains only words pertaining
to engineering, amateur radio, science, physics, mechanics, mathematics, etc. Contact me if
you would like a custom crossword puzzle for ...
BBTLine 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 ...
Where else on the Internet other than RF Cafe can you
go for a daily helping of electronics-related material that ranges from the very beginnings
of our chosen vocation through to the latest leading edge developments? That Q is rhetorical
of course - and self-serving to boot ;-) This handy-dandy trick for enhancing the signal
on your AM radio appeared in a 1969 issue of Electronics World. I remember doing
this magnet 'tuning' technique on my small, el cheapo pocket transistor radio that I carried
with me when wiring houses and buildings while working as an electrician many moons ...
Military & Aerospace Electronics magazine recently
published an interesting article titled
The Puzzle of RF Cosite Interference. "The military relies increasingly
on the RF spectrum for information throughput, sensors, and electronic warfare, yet growing
demands on RF technology can cause systems in close proximity to degrade each other's signals.
The modern military battlespace is overwhelmed with radio-frequency (RF) signals vying for
spectrum. Even without overt RF interference from enemy jamming, radio stations nearby, or
even from civilian cell ..."
Design Innovation Conference and Exhibition (EDI CON) USA, the first industry event to bring
together RF/microwave and high-speed digital design engineers and system integrators, announced
today the addition of a full day of training to its conference program at the Hynes Convention
Center, September 11-13 in Boston, MA. Organizers of EDI CON have invited industry experts
to teach 3-hour short courses
on relevant topics necessary for success in today's high-speed and high-frequency designs.
The day also includes sponsored 3-hour training ...
this is not a racial slur or tasteless joke. "Chinese authorities on June 20 issued a national
standard for the use of English in the public domain, eradicating poor translations that damage
the country's image. The standard, jointly issued by China's Standardization Administration
and General Administration of Quality Supervision, Inspection and Quarantine, aims to improve
the quality of English translations in 13 public arenas, including transportation, entertainment,
medicine and financial services. It will take effect on Dec. 1, 2017 ..."
"Its catalog was the
Boys' Life of electronics." - Tom Gallagher, NY2RF, CEO of ARRL,
regarding the second bankruptcy filing for
(May 2017 QST, p81) ...
Anatech Electronics, a manufacturer of RF and microwave
filters, has published its June newsletter. As always, it includes both company news and some
tidbits about relevant industry happenings. In it, Sam Benzacar discusses, among other topics,
the ever-increasing occurrence of RF interference in the IoT device population. Both long-occupied
and new areas of the electromagnetic spectrum are experiencing a rise in noise floors, necessitating
challenging filter designs. Anatech's business is to make certain that system and circuit
designers have capable filters available to assure ...
There is not much chance you will see an advertisement
Espey Manufacturing & Electronics now like this one from a 1948 issue of Radio
News magazine. Espey is still in the business of defense electronics, but their advertising
/ public relations group would be hauled into court if they produced copy like that today.
In fact, I hope as a result of my bringing up the subject that some overly sensitive snowflake
won't try to sue them for past offenses. Does this documented instance of former official
company policy suffice as legal proof of a corporate history ...
My alma mater is in the news! "A new use of
silver at the nanoscale could be the key to developing stretchable electronics such as smartphones,
tablets, and other electronic devices. Researchers at the
University of Vermont have discovered that working with silver at the
nanoscale allows them to create nanowires that have significant strength and the ability to
stretch. Frederic Sansoz, a professor of mechanical engineering at the university, said he
and his research team have been working with gold nanowires for several ..."
Triad RF Systems announces the availability of their
TTRM1109 - a Bi-Directional SSPA for domestic and foreign military and public safety wireless
links. It can handle any modulation and outputs 10 W typical BPSK and 3 W typical
64QAM OFDM. This class A GaAs module is designed for both military and commercial applications.
It is capable of supporting any signal type and modulation format, including but not limited
to 3-4G telecom, WLAN, OFDM, DVB ...
"As air-launched munitions get smarter, the Air Force
is creating a new class of weapon—a combination of
drones and missiles. But can they be advanced enough to work, yet cheap
enough that it's okay to lose a few in battle? It has advanced radar, forward-looking infrared
cameras, and laser rangefinders—all used to help the 13-man crew direct a barrage of lethal
fire to the ground from 12,000 feet. But for all of this advanced technology, the vision of
the U.S. Air Force Special Operations Command gunships can be thwarted by the threatening
adversary known as a cloudy sky. The USAF has a solution ..."
"In an extract from his new book, Brian Merchant reveals
how he gained access to Longhua, the vast complex where iPhones are made and where, in 2010,
unhappy workers started killing themselves. The sprawling factory compound, all grey dormitories
and weather-beaten warehouses, blends seamlessly into the outskirts of the Shenzhen megalopolis.
Foxconn's enormous Longhua plant is a major manufacturer of Apple products.
It might be the best-known factory in the world; it might also might be among the most secretive ..."
VNA RF Test Cables
to 18, 27 and 40 GHz. 18 GHz options include SMA, Type-N and TNC Higher Frequency
solutions include; 3.5mm, 2.92mm and 2.4mm. Also offered is ConductRF's Hi-Flex VNA Series
to 50 and 70 GHz phase stable & low loss professional series with light armor protection
and NMD head options. In-stock at
Visit ConductRF today for these and many other cabling options ...
This article from a 1970 issue of Popular Electronics
is a timely mate to the monthly list of career-related resources I posted today since it discusses
jobs in electronics not necessarily at the degreed engineer level. Along with both diploma
and certificate programs by local colleges, home study courses in electronics have been around
since the early part of the last century.
Cleveland Institute of Electronics began offering courses by mail in 1934, and has been
running advertisements in trade and technology magazines for as long as I can remember. It
is still in business today ...
Visitors to RF Cafe cover a very broad spectrum of engineers,
technicians, students, managers, hobbyists, and researchers. That is why I included one particular
career story titled "10 High-Paying Blue-Collar Jobs." Having begun my lifelong pursuit of
all things involving controlled movement of electrons as an electrician, I know firsthand
that you do not have to earn a college degree in order to work in a high paying, technically
challenging job. Another article addresses a topic of growing interest -
changing careers in your 50s (and beyond). Per the author: "...about 40%
of Americans who were still working when they turned 62 had moved to a new ...
"Spending on RF high-power semiconductors for the wireless
infrastructure markets continues to flatten out this year, despite the fact that the overall
market hit well over $1.4B in 2016. While certain market and sub-market segments are showing
moderate growth, Gallium Nitride (GaN) is capturing meaningful market share of
RF high-power semiconductors, especially in wireless infrastructure. The
technology will drive Gallium Nitride's share of RF Power semiconductor revenues to more than
double between 2016 and 2022. According to a research ..."
of Plantsville, Connecticut, is a manufacturer of precision waveguide bends in sizes ranging from WR22 to WR137 and
can form thin wall waveguide in sizes ranging from WR28 to WR75. Also double-ridged waveguide
sizes WRD475, WRD750, WRD650, and WRD580. They stock many of these in aluminum and OFHC for
quick turnaround. Please contact Accubend at 860 378-0303. They have been added to the
Waveguide Vendors page on RF Cafe.
radio from Sparton has to be one of the most unique models of its era. It is one of six vintage
vacuum tube radios featured in a 1936 issue of Radio-Craft magazine. These schematics,
tuning instructions, and other data are reproduced from my collection of vintage radio and
electronics magazines. There are 199 Radio Service Data Sheets ...
RCA Victor Model M109 "De Luxe"
International Model 77 'Kadette'
Models 566 '"Bluebird'
Atwater Kent 776 Auto Radio
Stromberg-Carlson No. 61
Are Left-Handed People More Gifted Than Others?
Hmmm... I'm a southpaw and I never received more gifts
than my four sisters at Christmas or for my birthday, so probably not ;-) "The belief
that there is a link between talent and
left-handedness has a long history. Leonardo da Vinci was left-handed.
So were Mark Twain, Mozart, Marie Curie, Nicola Tesla and Aristotle. It's no different today
– former U.S. president Barack Obama is a left-hander, as is business leader Bill Gates and
footballer Lionel Messi. But is it really true that left-handers are more likely to be geniuses?
Let's take a look ..."
Being a great appreciator of good humor, and especially
technology-related humor, I made sure to scan these
tech-themed comics from the pages of vintage Radio-Electronics magazines. Some
of the same themes from half a century ago are still applicable today - like inventing a device
that will block television commercials. There are a couple huge differences between then and
now, though. For one thing, the percentage of each hour consumed by commercials has nearly
doubled since 1958 ...
Title: "Design Considerations and Tradeoffs for Microstrip, Coplanar and Stripline
Structures at Millimeter-Wave Frequencies"
June 20, 2017 11:00 am EDT
Info: "RF technology using Printed
Circuit Boards (PCBs) typically has several common basic structures which are manipulated
to accommodate the intent of the design. Some common structures used for RF PCB applications
are microstrip, coplanar and stripline circuit configurations. These ..."
Courtesy of Market
Saelig Company announces the availability of the
Mercury™ T2C USB 2.0 & Power Delivery Protocol Analyzer that offers the newest USB
Type-C connection. The Mercury T2C is a small and affordable hardware-based USB protocol analyzer.
It is the industry's first ultra-portable, hardware-based, USB and Power Delivery protocol
analyzer. It combines the de-facto standard CATC Trace™ display, comprehensive USB class decoding,
and PD 2.0 protocol analysis. The pocket-sized, bus-powered Mercury T2C sits in-line between
"Positivity over pay levels is tempered by concerns
over skills, diversity and Brexit in The Engineer's 2017 salary survey.
Salaries for UK engineers have increased by 6.6% on average over the last
twelve months, according to The Engineer's 2017 salary survey, which is published today. Whilst
the average salary for UK engineers stood at £45k in 2016, our 2017 report - which is based
on responses from 2743 engineers working across a range of sectors - shows an increase to
£48k. Despite general dissatisfaction amongst respondents with the levels of remuneration ..."
"Carbon's unique electron configuration - and ability
to therefore bond in various states — allows the formation of a range of materials: from three-dimensional,
super-hard diamonds to the two-dimensional
opaque graphite used in pencils. The Carnegie creation features a network
of bonds that are both diamond-like and graphite-like. The scientists, in collaboration with
China's Yanshan University, began with a rod of structurally disordered carbon: a material
that looks like black glass. After compressing the 'sp2-hybridized glassy carbon ..."
"T-Mobile urged the FCC to adopt changes for rules
regarding 3.5 GHz, echoing sentiments made by CTIA just a few days earlier. The FCC in 2015
proposed a three-tier sharing framework for the
Citizens Broadband Radio Service (CBRS) in the 3.5 GHz band in an effort
to maximize the use of those airwaves. In a Monday filing with the agency, the nation's third-largest
carrier pushed for the authorization of Priority Access Licenses (PALs) on 10-year terms 'with
renewal expectancy,' urged the FCC to use Partial Economic Areas (PEAs) ..."
"At a meeting in midtown Manhattan, Kris Myny picks
up what looks like an ordinary paper business card and, with little fanfare, holds it to his
smartphone. The details of the card appear almost immediately on the screen inside a custom
app. It's a simple demonstration, but Myny thinks it heralds an exciting future for flexible
circuitry. In January, he began a five-year project at the nanoelectronics research institute
Imec in Leuven, Belgium, to demonstrate that thin-film electronics has significant ..."
"The Pentagon's soon-to-be published
electronic warfare (EW) strategy calls for increased investment in advanced
EW technology designed to defend U.S. assets and use the electromagnetic spectrum to attack
enemies. Scout Warrior reports. The prospect for a 'first-of-its kind' DOD electronic warfare
strategy gained new urgency following Russia's use of advanced EW technologies in Ukraine,
and the pace of global technological progress in EW systems. Electronic weapons ..."
"High-power electromagnetics (HPEM) technology experts
at Verus Research in Albuquerque, NM, are helping the U.S. Air Force find ways of integrating
future electronics-killing HPEM technologies onto military weapons platforms. Officials of
the Officials of the Air Force Research Laboratory (AFRL) at Kirtland Air Force Base, N.M.,
announced a $2.3M contract Wednesday to Verus Research (formerly XL Scientific LLC) for part
High-Powered Electromagnetics (HPEM) Research Program. HPEM technology
describes a type of directed RF energy ..."
These 1930s vintage
vacuum tubes were actually the first examples of integrated circuits insofar as they
incorporated two or more different types of amplifiers, or amplifiers and diodes. Just as
with semiconductor integrated circuits, isolation between elements was a concern and
necessitated additional screen grids for that purpose. The triode hexode was developed
specifically to solve the issue of degenerative feedback squelching intended oscillations
in the newfangled higher frequency shortwave radio sets that were all the rage back in the