Popular Electronics reader Frederic D.
Barber, Jr., was having none of the newfangled designations for standard
physical units as reported in the April 1966 issue. He, and evidently many others,
was not ready to accept the replacement of terms such as cycles per second (cps) with
Hertz (Hz), or seemingly any other change that included honoring a person by using his/her
name. We don't know whether ...
Making format changes to magazines after many years
of an established standard always ruffles the figurative feathers of a significant portion
of regular readers. Two magazines I read monthly, Model Aviation and QST,
recently underwent a format change - both of which I considered very nice. However, reader
comments in the aftermath showed a few who were not impressed. Popular Electronics
magazine in 1966 made announcements regarding plans to adopt some of the newer base units
for physical measurements, including this one for beginning to use "Hertz" (Hz), along
with its various ...
"When he's not on ham radio, Scott Tilley, VE7TIL,
an amateur astronomer, hunts spy satellites. Using an S-band radio from his home in Roberts
Creek, British Columbia, Tilley routinely scans the skies for radio signals from classified
objects orbiting Earth, according to a recent article on Spaceweather.com. Since starting
5 years ago, Tilley has located dozens of secret or unlisted satellites. Earlier this
month, while hunting for ZUMA - an undisclosed US government spacecraft lost in a January
8 launch mishap - when he saw the signature of
IMAGE (Imager for Magnetopause-to-Aurora Global Exploration) ..."
The metal-oxide-semiconductor field-effect transistor
was patented in its present form by Bell Labs in 1959, following the original patent
by inventor Julius Edgar Lilienfeld, in 1925. It had only been on the open market for
designers to use for a bit over a decade when this article appeared in Popular Electronics.
Adolph Mangieri wrote a number of articles for the magazine in the early 1970s introducing
readers to the many new types of semiconductor devices coming out of research laboratories
and into the commercial marketplace; e.g., "Understanding the Junction Field Effect Transistor."
MOSFET's are nowadays the primary building ...
Not everyone who visits RF Cafe is a seasoned
hobbyist, technician, or engineer. Some are newcomers to the realm and are in search
of knowledge to educate and encourage them. This 3-volume set of
Encyclopedia of Electronic Components is a contemporary printing
of modern day parts. All standard passive and active types are covered, as are topics
like sensors and human input, audio, heat, light, sound, and much more. A couple hundred
reviewers give the books 4.5 stars ...
"Millimeter wave signals were more found to be more robust than expected
and provided high speeds - although not gigabit speeds - at distances of several thousand
feet from a node, Signals Research Group found in recent testing of Verizon's 28 GHz
fixed wireless access network in Houston. 'Millimeter wave signals are far more resilient
than we expected, even at distances exceeding several thousand feet. Tree foliage, passing
school buses, buildings, glass ..."
Spark Kicks off 5G Era in New Zealand
with Live Trial
"New Zealand telecom operator Spark announced
what it claims to be the country's first
live 5G mobile test site in Wellington. The 5G trial used equipment
and technical support from Chinese vendor Huawei. It will test speeds, coverage and the
parameters of the spectrum in a real-world environment, and run throughout March connecting
equipment in a specialized vehicle drive-testing the streets of Wellington. 'We intend
to be at the forefront of deploying this technology in New Zealand once ..."
"It seems like the FCC's recent interest in doing
an in depth study of the growing RF spectrum
has taken a new twist. The FCC's apparent lack of real action in gathering the data needed
to make serious inroads into RF noise pollution has drawn the attention of the ARRL,
which voiced their concerns in a recent ARRL Letter as well as in their formal response
to the FCC. The ARRL 'took the opportunity to strongly urge the FCC to reinstate a 2016
TAC noise floor study, which, ARRL asserted, apparently was terminated before it even
got started.' It would seem ..."
"The head of U.S. Strategic Command said the nation
doesn't need a 'Space
Force' right now. 'I think that someday we'll have a Space Corps and Space Force
in this country. But I don't think the time is right for that right now,' STRATCOM's
Commander Gen. John Hyten said during a Senate Armed Services Committee hearing March
20 to discuss fiscal 2019 budget priorities. Hyten's response followed comments President
Donald Trump made earlier this month in a speech to the military in San Diego ..."
Three new application notes are available from Rohde &
Schwarz on the topics of:
Envelope Tracking and Digital Predistortion for RF Amplifiers,
Envelope and Doherty Transmitter T&M
Wideband mm−Wave Signal Generation and Analysis.
As always, they can be downloaded at no charge.
"It defies conventional wisdom about semiconductors.
It's baffling that it even works. It eludes physics models that try to explain it. This
newly tested class of
light-emitting semiconductors is so easy to produce from solution
that it could be painted onto surfaces to light up our future in myriad colors shining
from affordable lasers, LEDs, and even window glass. These materials are very radiant.
The nagging question of whether hybrid organic-inorganic perovskites (HOIPs) could really
work just ..."
Transient Specialists, a leader in electromagnetic
compatibility rentals for over 30 years, announces that they will be offering rentals
NSG 5500 by Teseq this coming May. This compact Automotive immunity transient test
generator allows for testing for to meet standards of ISO, SAE, DIN and JASO, and many
others. Transient Specialists, conveniently located in the mid-west, offers a variety
of EMC test equipment rentals to accommodate your testing needs. Our rentals include
technical support on the equipment, weekly and monthly ...
Believe it or not
Radio Shack is still open for
business both online and in some brick and mortar locations. They have some really good
prices on clearance (aka going out of business) parts that you might need. I just ordered
some connector adapters, coin cell batteries, and antenna mount kit for dirt cheap. Shipping
is free for a minimum $39 purchase. Use coupon code RADIO15 to get an additional 15%
Anatech Electronics, a manufacturer of RF and microwave
filters, has published its February newsletter. In it, Sam Benzacar notes the impressive
of rapid transformation of T-Mobile from virtual insignificance in the wireless world
to the top of the hill. He cites Open Signal's January 2018 report titled, "State of
the Networks: USA" as evidence. Sam offers his take on the reason for T-Mobile's success
and for why Verizon and AT&T fell behind. As usual, it's a worthwhile read ...
Admittedly, I needed to look up the meaning of
when seeing the title of this tongue-in-cheek article by Carl Kohler in the July 1969
issue of Popular Electronics magazine. Nobody knows for sure whether the over-enthusiastic
starring male in the series of techie stories that ran in Popular Electronics magazine
in the 1950s was actually Carl himself or an alter ego version of himself. Carl was also
the artist of numerous tech-related comics. This episode deviates a bit from the already-married
type to report on the exploits of born loser Otto Tronix ...
The available bandwidth of RF channels are often
limited by the bandpass characteristic of filters, amplifiers and mixers. Detecting amplitude
flatness and phase distortion is crucial in characterizing the quality of a transmission
channel. The amplitude flatness within the used bandwidth may have an influence on the
signal quality. Knowledge about phase distortion is essential to maintain low bit error
rates in data transmissions and VNAs commonly perform amplitude flatness and phase distortion
5G Could Bring $6B Savings Per Year for UK Government
Space Radiation More Hazardous Than Though for Satellites & Astronauts
Egyptian Jamming of ISIS Terrorists Disrupts Phones in Israel
The Federal 100: Profiles of 2018's Defense Contract Winners
5G Standards Work Continues as 3GPP Plenary Meets in India
Mayors vs. the
International Space Station Astronauts Calling "CQ Students"
AT&T Deal Raises Questions About Value of 5G Spectrum
Southwire Recalls Wi-Fi Switches Due to Fire Hazard
"In a new study, researchers from the U.S. Department
of Energy's (DOE) Argonne and Brookhaven National Laboratories observed the formation
of two kinds of defects in individual
nanowires, which are smaller in diameter than a human hair. These
nanowires, made of indium gallium arsenide, could be useful for a wide range of applications
in a field scientists have termed optoelectronics, which encompasses devices that work
by converting light energy into electrical impulses. Fiber optic relays are a good example ..."
"Narrowband Internet of Things (NB-IoT) has reached
critical mass as network operators all over the world have announced their deployment
plans. Last year, the NB-IoT market was driven by a handful of operators, primarily in
Asia and Europe. U.S. operators Verizon, Sprint and T-Mobile have started to fast track their
NB-IoT development. By the end of 2018, most of the U.S., Europe
and Asia Pacific will be covered by at least one NB-IoT network. Despite the early lead
by unlicensed Low Power Wide Area ..."
"Miniature MEMS-based speakers could revolutionize
speech and music reproduction in mobile communication devices. They combine the advantages
of a large frequency bandwidth and high acoustic quality with the ability to generate
very high sound levels. Nevertheless, they are so tiny that they can be integrated into
headphones. Such micro-loudspeakers were developed by the Fraunhofer Institutes for Digital
Media Technology (IDMT) and Silicon Technology (ISIT). MEMS technology stands for microelectromechanical
systems and combines classical ..."
Microwave Journal is conducting along with National
Instruments and Wolfspeed a webinar titled, "Introduction to Radar," on Wednesday, March 28, 2018, at 11:00 AM.
Mr. Scott Bullock presents on the topics of radar detection and ranging, pulse vs. CW,
radar modulation, radar path budget, basic radar equation, radar range equation, range
ambiguity and mitigation, maximum and minimum detectable range, and more ...
Here is a brand new book being offered by the ARRL:
Receiving Antennas for the Radio Amateur, by Eric P Nichols
(KL7AJ). "Although the fundamental characteristics of antennas apply to both transmission
and reception, the requirements and priorities of receiving antennas can be vastly different
from those of transmitting antennas. Receiving Antennas for the Radio Amateur focuses
entirely on active and passive receiving antennas and their associated circuits. There
are relatively few cases where a radio amateur ..."
"While the mobile industry is done with its annual
Mobile World lovefest - held last month in Barcelona - tech suppliers, system OEMs, and
mobile operators now face a host of 5G obstacles not yet overcome. In fact, they’re just
getting started. The technical issues of 5G are manifold. Among them, smart antennas
front ends for 5G mmWave - typically expected to operate at frequencies such as 28
GHz, 39 GHz, or 60 GHz - could seriously affect the performance of yet-to-emerge 5G mmWave
mobile phones ..."