Today in Science History
"Nokia has made a jump-start on the low-band 600 MHz spectrum,
through completing the first pre-standard
600 MHz LTE call using commercially-available hardware. The 600 MHz is an attractive
one to the FCC and operators primarily because of the range which it offers in terms of mobile broadband.
When you look at the vast expanse of the US and the number of rural communities which are currently
being underserved in an increasingly digital world, the band becomes even more attractive. The problem
arises in the fact this band is already being used by traditional broadcasters ..."
A major transition in the realm of test equipment readouts from
analog to digital was occurring during the 1970s. Prior to then, what few digital displays existed used
Nixie tubes, but the emergence of inexpensive LEDs, combined with equally inexpensive digital logic
ICs, made the change an easy decision.
D'Arsonval meter movements are prone to damage when even slightly overdriven or subject to physical
impact. Analog meter movements still have their place in a few ...
Triarchy's VSG6G1 is a very cost effective USB vector signal generator. Its capabilities
are comparable to the basic functions of a regular full size RF vector signal generator. VSG6G1 is miniature
and portable equipment, but it has more features and functions than full size analog RF signal generators,
with frequency range up to 6.2 GHz, frequency sweep, and frequency hopping using I&Q modulation
with arbitrary signal ...
How long will it be before someone flies an airplane through
it? "The race to build the world’s most spectacular skyscraper has reached new heights - and taken a
turn in direction. Designs for 'The Big Bend', a slender tower that would transform Manhattan's skyline, have been
unveiled. Described as the 'longest building in the world,' the project's concept drawings reveal a
skyscraper reaching an apex then curving back down. And featuring an elevator system that can travel
in curves, horizontally and in loops ..."
Radio-Camera Model A410 might be the world's first production camera-phone. The primary purpose
for developing the unit could have been for wartime field correspondents or forward reconnaissance.
I found two examples on the Internet. The one with the reddish-brown case is from the EarlyPhotography.org
website; it appears to be more for personal or commercial use. The on RadioMuseum.org is an green color
that would have been best for military use. A schematic is posted on the RadioMuseum.org page ...
Anokiwave is a fast growing fabless semiconductor company looking
for an ambitious, conscientious, and thorough
Staff RFIC Design Engineer to join the Anokiwave team. You will be responsible for designing highly-integrated microwave
and millimeter-wave RFICs in state of the art technologies. You will work with an incredible team of
IC design and test professionals developing state of the art products for 5G, SATCOM, and A&D markets.
You will learn circuit ...
For the sake of avid cruciverbalists amongst us, each week I
create a new
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 (3/20 - 3/24) "High Tech News" column on
the RF Cafe homepage (see the Headline Archives page for help). Enjoy! ...
Another chapter in American tradition has come to an end. Sears
Roebuck is likely going into bankruptcy and then disappear - thanks to poor management. Fortunately,
the Craftsman tool line has been sold to Stanley Black & Decker, so at least part
of the legacy will live on. Most of
my tools are Craftsman - motivated mostly by tradition and a desire to support American
companies. Plans call for establishing new Craftsman manufacturing facilities stateside. BTW, the Sears
store here in Erie closed last November.
a Reading, PA-based department store chain ...
Fairview Microwave, a supplier of on-demand microwave and RF components,
has introduced a new series of 8-bit programmable phase shifters that are adjustable over a full 360° range. These
three new models can produce a discrete set of phase states of up to 256 total steps in 1.4° increments
with superior accuracy and minimal phase shift error. These digitally controlled analog phase shifters
cover broadband microwave and millimeter wave frequencies. They are ideal ...
Notable Quote: "I link the abbreviation LTE to the
term Long Term Employment"
RF Cafe visitor
Bob Davis in a recent
e-mail alluded the quote, "LTE stands for Long Term Employment," which I have heard before. Based on
a not-too-extensive Internet research, earliest published instance I can find is a December 2010
ECN piece by Mr. Andreas
Roessler, of Rohde & Schwarz, where he states, "That's the reason why I link the abbreviation
LTE to the term Long Term Employment."
"In testing earlier this month, the laser - which has been developed
for the U.S. Army - produced a single beam of
58 kW, representing a world record for a laser of this type. Lockheed is now
is preparing to ship the system the US Army Space and Missile Defense Command / Army Forces Strategic
Command in Huntsville, Alabama. The system is based on combined fibre laser technology, meaning that
it brings together individual lasers, generated through fibre optics, to generate a single, intense
laser beam ..."
Farnell today announces a new global distribution agreement with EAM, a leading manufacturer of
Precision RF & Microwave Interconnect Products. Under their ConductRF Brand, the company offers,
innovative & reliable performance interconnect products operating from DC to 110 GHz. ConductRF's
products are recognized for their excellent performance and cost effectiveness by engineers & technicians
in numerous demanding industries including; Defense, Aerospace, Industrial, Medical Infrastructure,
inner Van Allen
belt has less radiation than previously believed, according to a recent study. Observations from
NASA's Van Allen probes show the fastest, most energetic electrons in the inner radiation belt are actually
much rarer and harder to find than scientists expected. This is good news for spacecraft that are orbiting
in the region and can be damaged by high levels of radiation. The inner Van Allen belt has less radiation
than previously believed, according to a recent study in the Journal of Geophysical Research. Observations
from NASA's ..."
Anatech Electronics, a manufacturer of RF and microwave filters, has published its
February newsletter. As always, it includes both company news and some tidbits about relevant industry
happenings. In it, Sam Benzacar discusses, among other topics,
spectrum sharing, including
the ISM bands and a DARPA program called Shared Spectrum Access for Radar and Communications (SSPARC)
that has the goal of developing more advanced sharing technology so that radars and military and commercial
communications systems can cooperate in near real time ...
When I first as the title of this article, I thought it was going
to be a comical parody on how wives (YLs) of Ham radio operators (OMs) viewed their husbands' hobby.
It turned out to be a report on a nationwide survey. Many of wives of Hams were themselves licensed
operators which, at the time, required Morse code proficiency in addition to radio theory and regulations.
In 1966 the average cost of a Ham shack layout was about $1,000, which is equivalent to $7,518 in 2017.
As with most electronics ...
VidaRF offers a wide selection of 2-way through 64-way
designed to cover 100 MHz to 20 GHz with average power handling of 30 watts for narrow,
octave, dual and multi-octave band applications. Standard connector type: SMA female, other connectors
available upon request. VidaRF is a North Carolina based company that is focused on being a solutions
provider by building to customer specs and offering zero days lead time for custom parts through ...
Australia Couple are 1st Foreigners to Own U.S. Radio Stations
WikiLeaks Vault 7 Leak Claims CIA Bugs 'Factory Fresh' iPhones
American Tower Discloses $100M Deal, Buoying Tower Sector
Cuba Institutes New Amateur Radio Regulations
Organic Power Electronics Now a Reality
People Who Think They're 'Tech-Savvy' 18% More Likely to Be Hit by ID Theft
Apple to Start Making iPhones in India over Next 2 Months
Seeking Synergy with Maker Movement
Vie for Air Time
Electrocrystallization: Breakthrough in Gold Nanoparticle
"A research team as published a research study that demonstrates
how it is possible to obtain very high quality crystals formed of
The research on gold nanoparticles is a field of both fundamental and applied importance" explains Academy
Professor Kari Rissanen of the Department of Chemistry at the University of Jyväskylä. X-ray crystallography
is the most powerful method for molecular-structure determination of these nanosystems, but obtaining
good quality single crystals suitable for accurate X-ray ..."
NI (formerly AWR Corporation) continues
to proudly sponsor this year's 2017 IEEE International Microwave Symposium (IMS) thirteenth annual
Power Amplifier Student Design Competition (HEPA-SDC). The competition encourages student teams
from around the world to design and construct a power amplifier (PA) and bring it to IMS in Honolulu,
Hawaii, where industry experts will evaluate the performance of all entered PAs ...
In Millimeter Wave Wireless Communications, four of the field's pioneers, including
Theodore S. Rappaport, Robert W. Heath, Robert C. Daniels, and James N. Murdock, draw on their vast
experience to empower engineers at all levels to succeed with mmWave. They deliver fundamental, end-to-end
coverage of all aspects of future mmWave wireless communications systems. The authors explain new multi-Gigabit
per second products and applications, mmWave signal propagation, analog and digital circuit design,
mmWave antenna designs ...
military microelectronics experts are looking to GlobalFoundries U.S. 2 LLC in Hopewell
Junction, N.Y., to continue providing foundry and electronic chip fabrication services for crucial U.S.
military electronics systems. Officials of the Defense Microelectronics Activity (DMEA) in McClellan,
Calif., announced a $99.8 million contract modification to GlobalFoundries on Friday for option year
one for access to leading edge, current, and legacy microelectronics and trusted processes for the U.S.
Department of Defense (DOD) ..."
Anokiwave is a fast growing fabless semiconductor company looking
for an ambitious, conscientious, and thorough
Senior Test Engineer to join the Anokiwave team in Billerica, MA. The ideal candidate
should possess a strong working knowledge of mmW measurements, calibration methodologies, semiconductor
probing, and python script language. You will play an instrumental role in the growth and excellence
of Anokiwave and our commitment to satisfying our customers. The successful candidate should demonstrate
LDMOS amplifier operates at a frequency range of 2300 MHz to 2500 MHz and has a power
output of 25 watts, while still maintaining a compact form factor of 3.33 x 2.69 x 0.65 inches.
This unit also features internal protection against over/under voltage and excessive temperature conditions,
which coupled with its rugged construction, ensure fault-free operation in even the most extreme environments.
This class AB LDMOS module is designed for both military ...