Rauland (aka Rauland-Borg)
has today on its History webpage that it was founded in 1922 as the Rauland
Company, by inventor and
radio enthusiast E. Norman Rauland. Soon thereafter he became a pioneer in
the radio broadcast industry by launching the Chicago-based radio station, WENR
(which eventually became the well-known WLS). In 1941 Norm Rauland and George
Borg entered a partnership, and a year later acquired Baird Television of
America. Rauland developed cathode ray tubes (CRT) and became an important
supplier of communications and radar equipment during WWII. After the war,
Rauland began manufacturing CRTs for 10" and 12" televisions. They were so
successful that in 1948, Zenith Radio Corporation purchased them to get the CRT
technology. This circa 1953 Rauland advertisement ran in Radio-Electronics
magazine to pitch their breakthrough aluminizing process that produced CRTs with
brighter pictures and greater contrast with relatively low anode voltages, which
was a big deal at the time due to concern over high levels of x-rays...
Here is an excellent opportunity for engineers
and technicians to earn while working from home! PCBONLINE, a global supplier of
complex rigid and flex-rigid printed circuit boards (PCBs)，and one-stop production
with maximum flexibility ranging from prototype sample to mass production, is in
work-from-home technical writers. Candidates to be familiar with general electronic
knowledge, especially project engineering. It would be best if the candidates can
write interesting posts about how to get from schematics, to PCB layout, to Gerber
files, and PCB manufacturing. Responsibilities include writing and revising technical
articles according to the outlines about PCBs, PCBA, electronic components and other
Joel R. Hallas (W1ZR), ARRL QST magazine's
Doctor Is In" column writer, has written many notable quotes over the years
while responding to readers' questions. Most of the Q's and A's are about antennas,
transmission lines, and impedance matching. The October 2020 issue contains the
following statement which is profoundly important to remember, particularly where
antennas are concerned, "...but
ground is always somewhere." It might seem like a Captain Obvious statement,
but people not overly familiar with the effects of a ground plane - be it solid,
mesh, or an array of radials - can and does have a huge effect on the radiation
pattern and effective impedance of every kind of antenna. Mr. Hallas' middle
initial is given as "R," but is might as well be "E" - for
EZNEC - because of his masterful and frequent
use of it in analyzing antenna setups and which often includes pattern plots in
his answers. It just figures that since I mention it, EZNEC is not mentioned this
"You can feel it on your laptop and mobile
phone. It's behind your refrigerator and office copy machine. While heat is desirable
for appliances like a coffee maker, it can jeopardize the reliability and safety
of electronic systems in other devices, causing premature failure at best and explosions
at worst. Active control of heat transport, as with thermal switches and thermal
diodes, is important for a range of applications in heating and cooling, energy
conversion, materials processing, and data storage. In practice,
thermal diodes are highly desirable thermal components for many engineering
applications because they allow energy systems to transfer heat to designated areas..."
Artech House today announced the release
Designing Wireless Sensor Network Solutions for Tactical ISR, by Timothy D.
Cole. This comprehensive resource demonstrates how wireless sensor network (WSN)
systems, a key element of the Internet of Things (IoT), are designed and evaluated
to solve problems associated with autonomous sensing systems. Functional blocks
that form WSN-based systems are described, chapter by chapter, providing the reader
with a progressive learning path through all aspects of designing remote sensing
capabilities using a WSN-based system. The development and a full description of
fundamental performance equations and technological solutions required by these
real-time systems are included. New Release discount price available now...
Since 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.
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
Comics June 1951 Radio-Electronics
RF Cafe typically receives 8,000-15,000
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RF Cafe is a favorite of engineers, technicians, hobbyists, and students all
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RF 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...
With more than 1000
custom-built symbols, this has got to be the most comprehensive set of
Visio Symbols available for RF, analog, and digital system and schematic drawings!
Every object has been built to fit proportionally on the provided A-, B- and C-size
drawing page templates (or can use your own). Symbols are provided for equipment
racks and test equipment, system block diagrams, conceptual drawings, and schematics.
Unlike previous versions, these are NOT Stencils, but instead are all contained
on tabbed pages within a single Visio document. That puts everything in front of
you in its full glory. Just copy and paste what you need on your drawing. The file
format is XML so everything plays nicely with Visio 2013 and later...
This assortment of custom-designed themes
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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
RF Cafe's raison d'être is and always has
been to provide useful, quality content for engineers, technicians, engineering
managers, students, and hobbyists. Part of that mission is offering to post applicable
job openings. HR department employees
and/or managers of hiring companies are welcome to submit opportunities for posting
at no charge. 3rd party recruiters and temp agencies are not included so as to assure
a high quality of listings. Please read through the easy procedure to benefit from
RF Cafe's high quality visitors...
"EPFL physicists propose a new path to
detect infrared radiation
with outstanding sensitivity, allowing detection of signals as low as that of a
single quantum of light. When using our webcam or cell phone camera, we experience
the tremendous capabilities of cheap and compact sensors developed in the past decades
for the visible region of the electromagnetic spectrum. On the contrary, detection
of lower frequency radiation not visible to the human eye (such as mid- and far-infrared
radiation) requires complex and costly equipment. Lack of a compact technology impedes
widespread access to sensors for the recognition of molecules and the imaging of
thermal radiation naturally emitted by our bodies. A new conceptual breakthrough
in this field may therefore..."
"Two DARPA-developed technologies - a novel
decision aid for mission commanders and a rapid software integration tool - played
a critical role in the recent Air Force demonstration of the Advanced Battle Management
System (ABMS). The Adapting
Cross-domain Kill-webs (ACK) program and the System-of-systems Technology Integration
Tool Chain for Heterogeneous Electronic Systems (STITCHES) were among a number of
technologies employed in the Aug. 31 - Sep. 4 ABMS on-ramp demonstration, which
involved attacks using live aircraft, ships, air defense batteries, and other assets.
ACK is developing a decision aid for mission commanders to assist them with rapidly
identifying and selecting options for tasking - and re-tasking - assets within and
across organizational boundaries. Specifically, ACK assists users with selecting
European Space Agency Develops a Mesh Reflector for Shaped Radio Beams
Electron Hole, Meet Your Fractional Cousin
Smallest thermoelectric cooler, by 10,000 times