is not necessarily a familiar type of vacuum tube to most RF and microwave electronics practitioners unless they
happen to be involved in radar, imaging (x-ray), particle accelerators, etc. It is
basically a high speed, high current switch used in pulse forming networks for firing magnetrons
(via a high-voltage transformer). Both the S-band airport surveillance radar and
the X-band precision approach radar I worked on in the USAF employed thyratrons. The X-band radar had been modified
by the time I came on the scene to use a solid state thyratron (one of the earliest adaptations),
but the S-band radar still used its original vacuum tube thyratron. While I don't recall for certain, I believe
the thyratron in the thumbnail image is the one it used. The accompanying ruler is 12" long to give you an idea
of the size. They used to burn out and have to be replaced...
(personal anecdote included)
Material World is an independent distributor and market maker of PCB raw materials. They buy and sell
PCB raw materials such as copper clad laminates,
copper foil, drill backer and entry, among other items. They also buy surplus, obsolete, and offcut RF copper
clad laminates. PCB Material World has been with RF Cafe since 2009!
knew that a polyglot was a person who spoke many languages, but wasn't sure how it applied to patents. According
to Merriam-Webster, the second definition of 'polyglot' is, "a book containing versions of the same text in several
languages." The multilingual person is definition number one. Scientific American magazine ran an article
titled, "The Polyglot Patent Boom" that discusses how the number
of U.S. patents awarded to assignees in multiple countries is - and has been for a while - on the rise. A look
at the thumbnail of the stacked chart included in the article illustrates the phenomenon. It begins on the left
in 1985 and terminates on the right at 2010, and shows U.S. patents awarded with at least one assignee being a
citizen of China. Orange, red, and purple portions...
believe that opportunity looks a lot like hard work." - Ashton Kutcher re never having had a job below him,
at the 2013 Teen Choice Awards (see
Steve Gross has a nifty story from his time in the U.S. Navy as a shipboard electronics technician in this edition
of EDN's "Tales from the Cube." When at sea, access to spare parts is very limited so you often have to exercise
a combination of ingenuity and creativity (not necessarily mutually inclusive traits)
to get the job done. In his case it was the need to find a suitable replacement for a
Darlington pair transistor in a piece of specialized test equipment.
With the help of a visiting engineer, he came up with a working circuit.
reminds me of another of my own tales from earlier days as a technician, but only from the standpoint of constructing
a semiconductor component from pieces of others...
Solutions introduces five highly linear, active bias, low noise variable gain amplifiers for LTE and WCDMA infrastructure
systems. The SKY65369-11 (832–862 MHz), SKY65370-11 (814–849
MHz), SKY65371-11 (880–915 MHz), SKY65373-11 (1710–1785
MHz) and SKY65374-11 (1850–1915 MHz) receive modules are fully integrated,
high performance devices that combine several discrete components into a single, easy-to-use solution.
Industries, located in Austin, TX, manufactures
industrial cable assemblies
to be as dependable as every part of the equipment they control. To minimize downtime, maximize ROI and manage
your operations, you need a cabling system that provides complete control and provides the right data at the right
time. Phone: 866-844-6699
Inc. has earned a solid reputation as a reliable source for printed circuit boards. Our focus is to provide PCBs
for research and development as well as production requirements for business today. They have the unique ability
to adjust to the ever changing schedule in business today, where flexibility is the key to saving your company
time and money in the manufacturing cycle. From prototype to production, the ASC team will supply a quality product
on time. ASC is a reliable manufacturer that will be serving the electronics industry for many years to come.
is a manufacturer of reliable and effective inrush current limiting
thermistor solutions. Samples available. Located in Carson City, NV, you can contact them at 800-808-2434.
Dilks reported in the August 2013 edition of QST on his opportunity of a lifetime when he received a
call from a friend saying that the producers of the film Paranoia needed some really convincing vintage tube radios
as props. John is the author of the monthly "Vintage Radio" column in the ARRL's flagship publication, and owns
a huge collection of exactly the type of equipment being sought. Paranoia
is a saga starring Harrison Ford and Liam Hemsworth. Per IMDB, "An entry-level employee at a powerful corporation
finds himself occupying a corner office, but at a dangerous price: he must spy on his boss's old mentor to secure
for him a multi-billion dollar advantage." John, his son,
and friend Nick England...
week's crossword puzzle has
an electrical engineering theme with all the entries being selected from a personally hand-assembled list of words
and clues. Instead of being asked for the names of movie stars and botanical oddities, you need to know electronics,
physics, chemistry, mathematics, mechanics, and other technical stuff. BTW, even though the crossword puzzle titles
alternate with terms like 'electrical,' 'wireless,' and 'microwave,' they all use the same dictionary. I only
vary titles for SEO purposes.
If you were a radar technician in the U.S. Air Force anytime between the 1970s and 1990s, you'll probably want
to read Mike Skees' letter. It is so chock full of names, locations
and dates that you will almost certainly find at least one person you recognize. If your name is not yet on my
list of honored USAF radar techs, please send me an e-mail and I'll be glad
to add you.
Corporation, the innovation leader in high-frequency EDA software, announces that a full slate of activities
will be offering during EuMW 2013. Select software demonstrations to MicroApps to an EU User Group Meeting
as well as a PA design lunch and learn with Cree and a Customer Appreciation happy hour with National Instruments
are all in the works. AWR and its parent company of National Instruments will present seven MicroApps at the EuMW
2013 MicroApps Theater (Stand #109) throughout the week.
voltage standing wave ratio (VSWR) is a fairly common and simple operation these
days with readily available and relatively inexpensive test equipment. Inserting a power meter in series with
a signal to measuring the incident and reflected power, or even simpler, inserting a bidirectional power coupler
in series with the signal and measuring the difference between the forward and reverse ports is a routine matter
for even modestly equipped laboratories, Ham shacks, or field operations. Simply plug the two values into the
following equation for the answer: VSWR=(1 + β)/(1-β), where β=√(Prev/Pfwd).
What if all you have is an oscilloscope, then how would you make the measurement? Actually, the calculation is
Successive Detection Log Video Amplifiers (SDLVA) offers 65 dB Dynamic Range
over the frequency range of 315 to 362 MHz. This model offers a fast rise time of 35 nsec maximum
and a recovery time of less than 500 nsec. The unit is temperature compensated such that log accuracy
over temperature remains less than ±2.5 dB over the full operating temperature range of -33 to +77 °C.
SAE is a student design competition organized by SAE International, formerly known as the Society of Automotive
Engineers. Conceived of in 1978 at the University of Houston, the first organized competition was held at the
University of Texas at Austin in 1981 and included only 6 teams. Since then it’s grown into a major event including
well over 100 teams from all over the world. During development of the Electric Vehicle, the MIT team faced many
challenges including testing and optimizing their new electric motor powered drive train. They needed to characterize
their motors and turned to the experts at Interface for help developing an electric motor test stand. After consulting
Interface application engineer, the HRDT (High
Resolution Digital Torque Transducer) with integrated couplings was selected.
Test Equipment Corp is growing & expanding!! Established in 1981 ATEC is a worldwide Hi-Tech equipment Rental
company seeking energetic individuals to work in a fast pace environment. Open house will be WEDNESDAY OCTOBER
2nd 9:00am to NOON. All positions are Full-Time perm positions. For more information see our website at
- Inside Sales (Entry level and JR level positions)
- Accounts Receivable Billing Specialist
- Warehouse Shipping & Receiving Clerk
- Calibration Technicians
- SQL Writer
Technologies is pleased to announce its launch of the GM Series Global Navigation Satellite System (GNSS) receiver
module to market. The
GNSS receiver module is an autonomous, high-performance Global Satellite Navigation System receiver designed
for navigation, asset tracking and positioning applications of all kinds. Based on the MediaTek chipset, it can
simultaneously acquire and track several satellite constellations. These include the United States GPS system,
Europe’s GALILEO, Russia’s GLONASS and Japan’s QZSS.
RF Cafe visitor sent me a note about California Eastern Labs (CEL) shutting down some of their
GaAs IC line of components. If you are a user and need to have parts for future production and/or repair,
then now is the time to check in with them or your CEL supplier.
people adopt quite literally the expression 'shooting holes' in a theory, argument, or claim. That is definitely
the case for video blogger Richard Ryan, who takes aim at (another firearms expression)
an iPhone 5s with his Barrett M82A1 50 caliber sniper rifle.
I know from experience performing many teardowns of phones, wireless routers, Bluetooth devices, etc., that getting
the cases open can be challenging - particularly if your goal is to preserve the integrity of the product - but
Mr. Ryan's method does seem a bit extreme. His tactic is no more shocking than, say, dropping an iPhone 5
in a kitchen blender. The approach used by the folks at RCR Wireless, Design News, and Chipworks...
Technologies announces its new low frequency RF Power Sensor. The new
LB559A-LF1 Sensor adds coverage below 100 kHz
to LadyBug’s laboratory accuracy RF and microwave power sensor portfolio. Designed for calibration, medical and
test applications, the new LB559A-LF1 Sensor includes a powerful full featured Windows GUI application. . Options
include a variety of connector options, support for programmatic measurements, a recorder output, and hardware
triggering input and output. Measurement speed is up to 2,000 measurements per second and the dynamic range is
-55 to +20 dBm.
son-in-law, Matt Cochran,
who has a degree in microbiology and is a certified dog trainer,
also runs a disk jockey side business. He just wrote to ask for advice on how to embed playable song sample clips
into a web page so potential customers can listen to music that he has purchased for playing during his gigs.
Embedding an audio or video file is simple, but doing so without violating a copyright requires finding a legal,
linkable sample file to call from your own page. Amazon.com is the perfect source. Although there are undoubtedly
other, even better ways of accomplishing the objective, this one I devised is pretty much bulletproof...
have written in the past that I have always been a huge proponent of research and development into all sorts of
energy conversion systems, be they wind, solar, hydro, geothermal,
nuclear, hydrocarbon, biomass, chemical, or whatever. What I oppose and resent is the politicization of the system
where people and groups with agendas (that often includes schemes for enriching and empowering
themselves and their crones) feed fallacious and obfuscating data to the public in order to gain acceptance.
The generally tech-ignorant and celebrity-stunned public is sadly all too willing to fall in line, particularly
when convinced (a simple task) that they are being cheated by anyone with a little
bit more than they have, and therefore deserve to have that wealth redistributed...
10-question quiz is based on
the information presented in Chipless RFID Reader Architecture, by Nemai Chandra Karmakar, Randika V.
Koswatta, Prasanna Kalansuriya, and Rubayet E-Azim. Some of these books are
available as prizes in the monthly RF
Cafe Giveaway. Graciously provided by
Technologies, a leading provider of
radio frequency based products, systems, and services, today announced that is has acquired DeltaNode from
Scandinavian Health Ltd. for an undisclosed amount of cash. The transaction was completed on September 1. Founded
in 2005 by a group of engineers with decades of wireless experience, DeltaNode has since established a strong
presence in Europe, the U.S., and Canada, as a supplier of RF-over-fiber distributed antenna systems and repeaters
designed to enhance the coverage of commercial wireless and public safety communication systems. DeltaNode
will continue to operate from its facilities in Stockholm, Sweden.
of whether you call it a Lissajous pattern or 'quadrature art,'
there is a coolness about feeding signals into the X and Y axes of an oscilloscope and watching the patterns that
emerge on the CRT (or possibly LCD these days) display. Using static waveshapes can
create amazing-enough Etch-A-Sketch type drawings, but animating the on-screen patterns with time-varying signals
into one or both axes really spiffs up the results. This short article by Russ Williams on the EDN website presents
a few simple circuits for generating some of the quadrature art examples shown in the thumbnail below. A solderless
breadboard, quad opamp IC, and a handful of resistors, capacitors, and inductors will get you started. For test
equipment, a simple...
Today's Engineer Online is a monthly Web publication devoted to the issues affecting U.S.
IEEE members' careers, such as professionalism, management skills,
engineering performance, engineering skills and competencies, product development practices, project management
issues, innovation and entrepreneurship, business practices.
Where Are the Tech Jobs?
Managers: Prepare and
Thinking Inside the Box to
21st Century Engineering
- Wyoming Recognizes
of a Ph.D.
Corporation, the innovation leader in high-frequency EDA software, announces that for a limited time the company
will offer a free eBook download of
Chapter 18, “Wideband Amplifiers,” from the new second edition of engineering professor Michael Steer's textbook,
Microwave & RF Design: A Systems Approach. The eBook excerpt download also contains embedded video tutorials
of Professor Steer demonstrating key principles of design as they pertain to the wideband amplifier case study
contained within its pages. This second edition is a comprehensive treatment of RF and microwave design for advanced
undergraduate and graduate students (as well as professionals). A key feature of
this new edition is the introduction of real-world case studies developed with AWR’s popular Microwave Office®
circuit design software.
Engineering, an international
Radio Frequency (RF) and Embedded Systems solutions provider, announced today
that the company has added Castle Microwave as an authorized representative of its commercial off-the-shelf
(COTS) products and design services for the United Kingdom and Ireland. "As a specialist
electronics distributor in the UK and Ireland for over 30 years, Castle Microwave has an impressive track record
and a large sales and service footprint," said Jeff Wells, President and CEO of NuWaves Engineering.
(and its predecessor NACA), and private and public operators have been monitoring
solar events in the optical realm for many decades while attempting to correlate terrestrial phenomena with it.
Auroral light displays in the extreme polar regions have long been known to be caused by solar flare and
coronal mass ejections
(CME). With the advent of radio, the electrical nature of the upper atmosphere became
evident when static and long range propagation affected long range communications. Extreme CME activity eventually
was associated with behavior of the electrical power grid; indeed, massive blackouts and brownouts are to blame
for many. Last but not least came concern for sun-sourced electrons regarding satellites. More than one 'bird'
has been smoked by the sun's ejecta. This November, on Thanksgiving Day, actually, comet ISON...
2.0: 20 Years of Dilbert, by Scott Adams. This special slipcased collection - weighing in at more than ten
pounds with 600 pages and featuring almost 4,000 strips - takes readers behind the scenes and into the early days
of Scott Adams' life pre-Dilbert and on to the success that followed when Dilbert became an internationally syndicated
sensation. Divided into five different epochs, Dilbert 2.0 gives readers a glance at some of Adams's earliest
strips, like those created for Playboy, and a peek at an abundance of special content ranging from numerous rejection
letters to Adams' first cartooning check, and more. Adams personally selected the material for this collection
and offers original comments and humorous asides throughout.
was not all that long ago when virtually everything you bought was NOT designed to be thrown away when it broke.
Back when ICs, resistors, and capacitors had wire leads and cases were held together with straight-slot and Phillips
head screws rather than the microminiature 'security' type screws, it was possible for the able and willing repairman
to troubleshoot and repair a device or appliance. Now, in a world that bombards us with admonitions against not
being green, practically everything is meant to be thrown away after use - from cellphones and televisions to
clothing and the vast quantity of cardboard and Styrofoam packaging that contains our disposable goods. For those
of us who lived during the aforementioned times and/or those who dabble in vintage electronics either for hobby
or for career necessity, access to data books can
sometimes mean the difference...
economics is the theory that when consumers don't spend sufficiently, in the opinion of the government, then
the government should seize their money and spend it for them." - Steve Forbes
ExpertServices periodically sends out e-mails that highlight recent key court cases that can significantly affect
the effectiveness of expert testimony, both for the plaintiff and for the defendant. You probably remember seeing
headlines last year for "The Trial of the Century" involving Apple and Samsung. It turns out in the aftermath
that the judge ordered public disclosure of financial records from both parties - against the protestations of
both. A superior court ruled, after the
had been done of course, that the judge overstepped her authority. It happens way too often from the benches of
all levels. My question is whether the wronged parties are able to sue the judge and/or governing body for incompetence?
Do the judges enjoy self-awarded unconstitutional protection against retribution? Attorney Robert Ambrogi weighs
in on the situation...
Well, to be honest they're not completely free. You do need to fill out an application, so some of your time
is required. Otherwise, though, the publishers pay the cost.
EE Times Europe
Design & Development
There is a huge list of free tech magazines to choose
from besides just these.
McCarthy is a name widely recognized for his efforts in the 1950s to expose Communist sympathizers in the
United States, be they common citizens or holders of high office. His exploits were routinely dismissed as folly
and he was accused of "finding a Commie behind every rock." The derisive term 'McCarthyism' was used to describe
anyone exhibiting supposedly paranoid obsession with investigating suspected wrong-doing. After many decades of
successful application of the charge to shut people up (like calling someone a racist today),
a misfortune befell its libelants. In 1995, the Venona papers (secret messages between Moscow
and its U.S. agents decrypted by our government), data from Soviet archives and executive-session transcripts
of Senate committees were finally opened after a 50-year ban. The information showed that McCarthy was justified
in his suspicions after all. This article, which I ran across while looking for interesting old stories and advertisements
relating to radio and electronics...
RF Systems is a global leader in RF power amplifier solutions
that are critical to defense, commercial, and industrial market applications. With origins in the design of broadband
and band-specific SSPAs, Empower continues to advance the science of RF power amplification to produce the toughest,
most efficient and cost-effective solutions in the industry. Their priority is to design and deliver high quality,
innovative products which solve customer systems and business requirements.
week, as with every week, the RF Cafe crossword
puzzle uses only words from a custom-built (by me) dictionary of only terms from
engineering, mathematics, chemistry, science, physics, aerospace, electronics, mechanics, astronomy, maritime,
sci-fi, and related fields and persons affiliated therewith. No numbnut clues for Hollywierd actors, fashion designers,
psychics, remote villages, etc., will ever be found. You can get those from the newspaper and practically all
online crossword puzzle websites.
has been helping deliver this website to you since 2008. Since 1994, leading wireless electronics companies have
relied on 3Gmetalworx to deliver cutting edge solutions for advanced
RF/EMI PCB-level shielding requirements. From prototyping
and design services to JIT manufacturing, 3Gmetalworx provides a seamless service pathway supporting entire product
lifecycle with basic shielding cans,
single-cavity shield sets, and
multi-cavity shield sets.
normally reserve the radio controlled (R/C) model news for my
AirplanesAndRockets hobby website, but this is
so cool that I know the many former and current military members who visit RF Cafe will appreciate it. For that
matter, so will a lot of non-military members. Here is a video of a very large scale R/C model of the USS Kitty
Hawk aircraft carrier being used as a launch platform for a radio controlled T-38 model airplane. Adding to the
cool factor is the use of an R/C tugboat for pushing the aircraft carrier away from the docks before it gets underway.
Per the YouTube website description, "Our 13-foot
USS Kitty Hawk replica launches her planes
to the beach in this RapidNadion adventure. Some aircraft never make it off the deck, and others crash into the
drink due to Kitty Hawk's prototype catapult system...
Electronics has published its September 2013 newsletter. As always, it includes both company news and some tidbits
about relevant industry events, regulations, and standards. This month
Sam Benzacar writes about Wi-Fi
encryption, the Land Mobile market, and a new study by the FCC on radio interference. He also has a short piece
titled, "And They Said Someday We Wouldn't Need Filters" (BTW, Anatech makes filters).
have probably heard the old (erroneous) adage, "Ground is ground the world around."
That might have been true prior to the advent of electronics, but it certainly isn't so anymore. Even in the vacuum
tube days it wasn't so. Once frequencies get high enough that reactance rivals resistance for dominance, you can
forget about simple grounding concepts for anything other than providing a measure of safety against electrical
shock. This latest installment of EDN's Sherlock Ohms series is an account by John Lombard on his experience in,
for Common Ground." He begins, "The term 'ground' should be used more carefully. In our equipment, we distinguish
between ground and DC common for good reason. Ground refers to chassis or safety ground to take errant AC voltage..."
is a brief primer on mutual inductance between inductors (aka coils).
Mutual inductance is
your circuit's friend if you want it to occur, as with a transformer, or it can be your circuit's mortal enemy
if you don't want it to occur, as when two inductors 'talk' to each other unintentionally because of proximity
and relative orientation. One form of mutual inductance not mentioned here but of utmost importance to radio is
that existing between elements in a directional antenna like a Yagi or log periodic configuration.
Solutions today announced that its highly integrated,
low noise amplifier
front-end modules are being leveraged by various OEMs to enable GPS and GNSS in smartphones, tablets and other
mobile devices in emerging markets. Skyworks' modules offer high linearity, excellent gain and an integrated
filter, providing manufacturers with cost-effective, high performance solutions in a compact footprint.
These devices are also the first semiconductors to support China's BeiDou navigation satellite system
(BDS), China's second-generation system that is enabling GPS in consumer platforms.
Foucault Pendulum doodle for today is an animation that shows
the current time according to pegs that have been knocked down by a swinging pendulum, in commemoration of Jean
Bernard Léon Foucault's birthday on September 18, 1819. It is very cool. After watching its motion over a period
of many minutes, the update appears to occur only when the web page is refreshed, rather than with real-time action.
I also noticed what looks like an error in the displayed position of the pendulum on the near side of the peg
array that is illustrated in the screen capture below. Unless the pendulum has just been released, it is impossible
for the path to lie between two standing pegs. The pendulum bob's path should never pass between two standing
pegs unless it had just been initially released. Probably most widely seen Foucault Pendulum is
announces a new RoHS compliant VCO model
V600ME45-LF ideal for satellite
communication applications. The V600ME45-LF operates from 3 to 6 GHz with a tuning voltage range of 0-24 Vdc.
This octave tuning VCO features a typical phase noise of -103 dBc/Hz @ 100 kHz offset and an average
tuning sensitivity of 147 MHz/V. The
V600ME45-LF is designed to
deliver a typical output power of 6 dBm into a 50 ohm load while operating from a 12 Vdc supply
and drawing only 24 mA. Second harmonic suppression better than -12 dBc.
personal anecdote is humorous only because I caught my typo
before it was too late to correct it. Whenever an advertiser makes a payment, I always try to remember to send
a thank-you note to let him or her know that payment has been received. The standard e-mail Subject line I use
is something like, "RF Cafe: Payment Received - Thanks!" Hunt-and-peckers like me (yeah,
intentional self-deprecation) bear the burden of having to look at the computer keyboard most of the time
whilst typing. Somehow, even with decades of sitting in front of a computer for hours on most days, the neurons
never quite fully connected between my fingers and the word processing region of my brain. Last week I was typing
the Subject line for one of the aforementioned e-mail genres while a Windows system file update was occurring
in the background. Maybe it doesn't happen on Macs, but on PCs...
original purpose of this note was to announce a couple post-WWI era
U.S. Air Force recruitment posters that I
ran across in Saturday Evening Post magazines of the day, but I got side-tracked. There is a plethora
of old posters available for viewing on the Internet, but I haven't seen these two, which are particularly directed
toward flight officers. Except maybe for a C-130, you probably won't see any propeller-driven aircraft in today's
USAF material. In fact, it was while I was looking for contemporary recruitment posters to test that hunch that
I ran across an entire section of regulations governing the proper - and only official - method of construction
the USAF's new (relatively) wings symbol. The official U.S. Air Force "signature" consists of...
RFID Reader Architecture, by Nemai Chandra Karmakar. In the era of information communication technology ,
RFID has been going through tremendous development. RFID technology has the potential of replacing barcodes due
to its large information carrying capacity, flexibility in operations, and applications. The deployment of RFID
has been hindered by its cost. However, with the advent of low powered ICs, energy scavenging techniques, and
low-cost chipless tags, RFID technology has achieved significant development. This book addresses the new reader
architecture, presents fundamentals of chipless RFID systems, and covers protocols. Published
by Artech House.
has been the trusted world leader in force measurement for half a century - from grams to millions of pounds,
in hundreds of configurations. We are the preeminent supplier to companies such as Boeing, Airbus, NASA, Ford,
GM, NIST and thousands of measurement labs. Our load
cells are complimented by highly accurate torque transducers, machine calibration systems,
digital indicators, software, and force measurement. Our in-house
recalibration and repair labs support a variety test standards.
has been supporting RF Cafe for five years. Comdel designs and manufactures
RF and DC power supplies and process instruments for the
semiconductor, solar cell/photovoltaics, flat panel, and industrial heating industries. Comdel products are in
use worldwide by the industry’s major equipment and IC fab manufacturers. Please consider them for your design
Bugorski has the distinction of being the only person known to have placed part of his body in the path of
a high energy proton particle beam ...and lived. At the time, he was working as a researcher at Russia's Institute
for High Energy Physics, on the U-70 synchrotron. While troubleshooting a malfunctioning piece of equipment on
13 July 1978, he stuck his head directly in the path of the proton beam. Mr. Bugorski reported that he saw a flash
"brighter than a thousand suns," but did not feel any pain. The scenario reminds me of the story I've told before
about a guy I worked with in the USAF who inadvertently put is head in front of a transmitting S-band radar antenna
feed horn and reported hearing a loud hum in his ears. In both cases safety interlocking mechanisms were believed
to have been properly...
cars are good business for electrical and electronics engineers from a multitude of standpoints, and since they
are being imposed upon us - ready or not - it might be a good idea to figure out how you can position yourself
to benefit from them career-wise. Power generation and distribution engineering has always been a well-paying,
challenging aspect of electrical engineering. Control systems, battery management, brushless motors, navigation
systems (including collision avoidance and self-navigation), and vehicle power and
signal distribution are all technical realms needed to make an electric vehicle fleet viable. All are in their
infancy relative to automobiles built for internal combustion engines. Many IC vendors are already designing products
specifically to address needs of electric vehicles. As an increasing number of electric-only cars
(compared to Prius types whose gasoline engine charges the battery) are put into
primary service, the nation's grid is going to feel the stress. In fact, our electricity generation and distribution
system is already under severe stress and it is only through impression, near super-human efforts of planners
and engineers that blackouts...
Engineering is a premier supplier of RF Systems, Subsystems,
RF Products and Engineering Design Services designed to
customer requirements. They are a turnkey provider for RF and microwave communication custom designs with full
project management and design responsibilities; taking ownership from the conceptual idea to production.
of you who are not particularly interested in
old electronic equipment will
please indulge those of us who are. I post these articles occasionally to remind people of from whence we have
come. Whether you are an amateur radio operator or just a cellphone user, appreciation is due to the pioneers
who took the metaphorical arrows for us so that we may enjoy the micro-size, low cost, high quality communications
available today. The full-height equipment racks in the photos were standard fare in the 1930s for long distance
(DX) shortwave operators - often only for CW (Morse
code). "User serviceable parts inside' was the rule rather than the exception. As much as I like waxing
nostalgic over tube-based hardware of yesteryear, I am quite grateful to be typing this note on a computer keyboard
and not on a massive teletype machine.
you have a truly new idea, you don't have to worry about people stealing it. You will have to pound it into their
heads." - John A. O'Keefe,
assistant chief of the Theoretical Division at NASA's Goddard Space Flight Center from 1958-1974.