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4 of the December 2021 homepage
archives. Tuesday the 7th
 When I first saw this photo of the
Cosmotron in a 1952 issue of Radio-Electronics magazine, I thought
maybe it was really a recovered crashed UFO from Area 51. Of course it couldn't
be since the image is very sharp and clear, and after a century of supposed UFO
sightings nobody has ever produced anything better than a poorly focused blob with
a few dim lights on it. The Cosmotron was a proton accelerator, the first of its
kind to impart energies in the gigaelectronvolt (GeV) range. Built at Brookhaven
National Laboratory by the U.S. Atomic Energy Commission in 1948, it reached full
energy in 1953 and it continued being used for research until 1966. Interestingly,
the Cosmotron used a Van de Graaff generator as a high voltage source for accelerating
protons. The first particle accelerators were physically linear - long pipes. They
were limited in how fast particles could go because greater acceleration requires
more distance. Eventually, circular structures were built to facilitate essentially
an endless path...
 "The STA8135GA is the first single-chip satellite-navigation
receiver to integrate a
triple-band positioning measurement engine. It manages all GNSS constellations.
Triple-band has historically been used in professional applications such as surveying,
mapping, and precision agriculture that demand millimeter accuracy with minimal
reliance on correction data. Only available in chipsets or modules up to now, which
are typically larger and more expensive than this single-chip solution, triple-band
enables the receiver to efficiently acquire and track the largest number of satellites
in multiple constellations simultaneously. This capability delivers superior performance
in difficult conditions such as in urban canyons and under tree cover..."
 Receiving information wirelessly or even
over a wire is taken for granted today, but 80 years ago it was considered a "miracle
of God" - that's what Alexander Graham Bell called it. Some regarded radio as being
of the devil. The same is true of today's omnipresent communications - some consider
it a blessing while others call it a curse. I'm somewhere in the middle. In 1934
when this
Radio
News & Shortwave magazine was published, the telecommunications world
was in its heyday of growth with a reported 17 million listeners of AM radio (no
FM yet). Radio dealers and servicemen were gearing up for customers with unbridled
enthusiasm for the fledgling commercial broadcast industry's offerings. Even in
the midst of the Great Depression, people were joining in on the wireless craze
in large numbers, and amateur radio operators were almost feared for their awesome
ability...
 This will forever change humankind's perception
of the night sky: "In order to find out how badly the night sky is going to be affected
by sunlight reflected from planned
satellite megaconstellations, we built an open-source computer model to predict
satellite brightnesses as seen from different places on Earth, at different times
of night, in different seasons. We also built a simple web app based on this simulation.
Our model uses 65,000 satellites on the orbits filed by four megaconstellation companies:
SpaceX Starlink and Amazon Kuiper (U.S.), OneWeb (UK) and StarNet/GW (China). We
calibrated our simulation to match telescope measurements of Starlink satellites,
since they are by far the most numerous. Starlink has so far made some strides toward
dimming their satellites since their first launch, but most are still visible to
the naked eye. Our simulations show that from everywhere in the world, in every
season, there will be dozens to hundreds of satellites visible for at least an hour
before sunrise and after sunset..."
 By 1970, the airwaves were really getting
crowded. Lots of high power commercial and military gear was online, and the radio
listening public was setting new record highs every year. As such, many new sources
for
radio interference (RFI) were being discovered, and sometimes the problems caused
went well beyond just a little noise being superimposed on top of Neil Diamond's
newly released Cracklin' Rosie or the lads from Liverpool's The Long and Winding
Road. Often, the interference was overwhelmingly annoying. The FCC was being flooded
with complaints. Digital computers were creating a whole new type of electronic
havoc, and leaky cable television cables and amplifiers caused all kinds of headaches
to over-the-air sets. Rusty bolts and chain link fences in the vicinity of high
power radio and TV towers - and even radar installations - manifested themselves
as detectors by virtue of their nonlinear nature. I remember when people at Robins
AFB, in Georgia, would sometimes complain to our radar shop because their radios
would blip once every four seconds as the search radar antenna swept past their
radios...
 Antenova Ltd, the UK-based manufacturer of
antennas and RF antenna modules for M2M and the IoT, is announcing
"Affini," part number SRFL064, which is a flexible printed circuit (FPC) antenna
for the LTE, 4G and 5G NR networks in global markets. This antenna covers all main
4G bands plus 617-698 MHz which offers 5G coverage and the popular Band 71.
The Affini antenna measures 78 mm x 17 mm x 0.15 mm, which is small,
yet it delivered high efficiency in tests. It has an I-PEX MHF1 connector, so it
is easily designed in and it suits small devices that need to operate across wide
areas...
 New Scheme rotates
all Banners in all locations on the page! RF Cafe typically receives 8,000-15,000
website visits each weekday.
RF Cafe is a favorite
of engineers, technicians, hobbyists, and students all over the world. With more
than 16,000 pages in the Google search index, RF Cafe returns in favorable
positions on many types of key searches, both for text and images. New content is
added on a daily basis, which keeps the major search engines interested enough to
spider it multiple times each day. Items added on the homepage often can be found
in a Google search within a few hours of being posted. I also re-broadcast homepage
items on LinkedIn. If you need your company news to be seen, RF Cafe is the
place to be.
 Anatech Electronics (AEI) manufactures and
supplies RF and microwave filters for military and commercial communication
systems, providing standard LP, HP, BP, BS, notch, diplexer, and custom RF filters,
and RF products. Standard RF filter and cable assembly products are published in
our website database for ease of procurement. Custom RF filters designs are used
when a standard cannot be found, or the requirements dictate a custom approach for
your military and commercial communications needs. Sam Benzacar's monthly newsletters
address contemporary wireless subjects. Please visit Anatech today to see how they
can help your project succeed.
Monday the 6th
 In May of 1961, Radio-Electronics
magazine began running a monthly quiz type feature called "What's Your EQ?" EQ stands
for Electronics Quotient. For the first year or so, solutions were provided in the
next month's issue, but, probably at the request of readers, solutions were printed
in the same month's issue. The EQ challenges were provided by readers who were paid
$10 when published. $10 in 1961 was the equivalent of about $93 in 2021 money, so
it wasn't chump change. "Black Box" problems were very popular, and arriving
at a workable solution (sometimes there was more than one) often took some creative
thinking. The box might contain relays, vacuum tubes, semiconductors, resistors,
capacitors, inductors, transformers, neon bulbs, etc. My approach is to say there
is an elf inside who...
 ARRL is seeking a ham with a professional
journalism background to handle
ARRL's news function
on a contract, remote basis. Candidates for ARRL News Editor should be plugged into
the ham radio community, with a broad awareness of the major players (past and present)
and the main issues (past, present, and potentially future) in the world of ham
radio. Ideally, candidates will have professional journalism experience - in particular,
having a well-developed sense of knowing a potential news story when they see one,
as well as how and where to research leads. The News Editor creates news stories
that are posted on ARRL's home page, and is responsible for publishing the weekly
e-newsletter...
 Website visitor Tommy Reed, whose article
entitled "17
Best RTL-SDR Software Defined Radio Dongles," I posted a link to earlier this
year, has recently added "21
Best DC Power Supplies for Any Lab Budget" to his website,
From DC to Daylight. He has
many topics on RF, test equipment, radios, power supplies, etc., in his blog repertoire.
"If there was a singular piece of test equipment that is absolutely vital, it would
have to be a great DC power supply. This humble little box was the topic of a recent
“Ultimate Guide to DC Power Supplies” post we did. At the end of that post, there
were a handful of top DC power supply options that are extremely powerful. Given
the importance and sheer range of options we wanted to do a dedicated list post
to cover a broader set of DC power supply options. To that end, we compiled a list
of 21 great DC power supply options below..."
 I suppose the term "Subminiature"
as it applies to electronics components is as relative as the word "Modern" is in
book titles. They might be accurate at the time of the writing, but passage of time
renders them ambiguous. Subminiature in 1957, when this Radio & TV News magazine
article appeared, meant anything other than full-size vacuum tubes, huge power transformers,
multi-layer wafer switches, and hookup wire larger than 20 AWG. The advent
of peanut tubes, very early versions of transistors and solid state diodes, and
ever-higher operational frequencies permitted component sizes to be shrunk by a
factor of two or more. Rather than using a pistol-style soldering gun or a soldering
iron designed for assembling copper guttering, a precision pencil-type iron could
be used and greasy tools from the garage no longer sufficed for turning screws and
nuts. A lot of the material in this article is still useful for hobbyists and even
electronics professionals in the lab...
 Modelithics, the leading RF and Microwave
simulation model provider, is pleased to welcome
IEH Corporation, a leader in hyperboloid PCB connector products, into the Modelithics
Vendor Partner (MVP) Program at the Sponsoring level. In addition to becoming a
Sponsoring MVP, IEH and Modelithics are collaborating to develop 3D models for the
HGM, HMK, HMM, HRM, and HVM hyperboloid PCB connector series. 3D models are also
in development for the HKC and HKX Hyperkinetic connectors, which are high-speed,
high-density hyperboloid modular interconnects. Through the MVP Program, these models
will be available for free extended 90-day trial use of all Modelithics models available
for IEH components to approved customers. The new 3D models for IEH connectors will
be available in the Modelithics COMPLETE+3D Library...
 With more than 1000
custom-built stencils, this has got to be the most comprehensive set of
Visio Stencils 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). Stencils 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...
 Centric RF is a company offering from stock
various RF and
Microwave coaxial components, including attenuators, adapters, cable assemblies,
terminations, power dividers, and more. We believe in offering high performance
parts from stock at a reasonable cost. Frequency ranges of 0-110 GHz at power
levels from 0.5-500 watts are available off the shelf. Order today, ship today!
Centric RF is currently looking for vendors to partner with them. Please visit Centric
RF today.
Sunday the 5th
 This
RF & Microwave themed crossword puzzle for December 5th contains only clues
and words are directly to RF, microwave, and mm-wave engineering, optics, mathematics,
chemistry, physics, and other science subjects. As always, this crossword contains
no names of politicians, mountain ranges, exotic foods or plants, movie stars, or
anything of the sort unless it/he/she is related to this puzzle's technology theme
(e.g., Reginald Denny or the Tunguska event in Siberia). The technically inclined
cruciverbalists amongst us will appreciate the effort. Enjoy!
 This assortment of custom-designed themes
by RF Cafe includes T-Shirts, Mouse Pads, Clocks, Tote Bags, Coffee Mugs and Steins,
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 Cafe. Thanks...
 ConductRF is continually innovating and
developing new and improved solutions for RF Interconnect needs. See the latest
TESTeCON RF Test
Cables for labs. ConductRF makes production and test coax cable assemblies for
amplitude and phased matched VNA applications as well as standard & precision
RF connectors. Over 1,000 solutions for low PIM in-building to choose from in the
iBwave component library. They also provide custom coax solutions for applications
where some standard just won't do. A partnership with Newark assures fast, reliable
access. Please visit ConductRF today to see how they can help your project!
Friday the 3rd
 Many of the technically-oriented magazines
in the pre-post-war era were going all out with advertisements promising training
for
careers for servicemen in the post-war era. This one by National Schools in
a 1945 issue of Radio News is a good example. By January of 1945, the attitude
of people in America and Europe was that the end of World War II was imminent,
and life would soon return to a peacetime normal state. There would be a lot of
rebuilding to do in Europe that would drain tech companies of some desperately needed
engineers, technicians, and assembly workers. In America, labor markets were flooded
with workers hoping to exploit the skills learned and practiced while beating back
the forces of Nazism, Fascism, Communism, Marxism, and other "isms." Institutions
like National Schools offered opportunities...
 "Emerging 5G wireless systems are designed
to support high-bandwidth and low-latency networks connecting everything from autonomous
robots to self-driving cars. But these large and complex communication networks
could also pose new security concerns. Encryption methods now used to
secure communications from eavesdroppers can be challenging to scale towards
such high-speed and ultra-low latency systems for 5G and beyond. This is because
the very nature of encryption requires exchange of information between sender and
receiver to encrypt and decrypt a message. This exchange makes the link vulnerable
to attacks; it also requires computing that increases latency..."
 Source Today website just posted
their ranking list of the
Top 50 Electronics Distributors for 2021. You will not be surprised to learn
that the top four positions are occupied by Arrow Electronics, Avnet, Future Electronics,
and Digi-Key, respectively. Mouser Electronics, shown on the page header graphic
as a Platinum Sponsor, came in at 7th place, which at least shows the survey is
not biased by sponsorship. Other distributors familiar to RF and microwave types
are Newark (in 9th place -- now known as Farnell), RFMW (22nd place), and Richardson
Electronics (25th place). No information is provided on the webpage regarding metrics
used for the rankings, but there is a
PDF file you can download if you fill in a form - which I did so that you don't
need to. A lot of info is provided on distribution issues in the past year and since
the beginning of the plandemic.
 It has been a while since I saw the
quotient rule for derivatives applied. Probably the last time was in a college
text book, because I'm pretty sure I haven't had the occasion to use it since then
- except maybe back in the days when I was writing my RF Workbench software and
needed to derive closed form solutions for group delay in filters. This 1933 article
from Radio News magazine presented the quotient rule as part of a discussion for
finding the impedance of a load for maximum power transfer. Pure resistances were
used in the example, but the method applies as well to complex impedances...
 Picocom, the 5G Open RAN baseband semiconductor
and software specialist, today announced the introduction of its
PC802 SoC (system on chip). The company's flexible, low power device empowers
the innovation of a new breed of 5G NR open small cell products. The PC802 is the
world's first 4G/5G device dedicated to developing small cells with integrated support
for Open RAN (Radio Access Networks) standards. It supports disaggregated 5G small
cell platforms, including indoor residential, enterprise and industrial networks,
neutral host networks and outdoor networks. "I am honoured to announce the PC802,
the culmination of three years' work and a milestone achievement for the company
by the whole Picocom Team," said Peter Claydon, President of Picocom. "We will deliver
product to our lead customers...
 If you need a cheap, quick
lightning arrestor for your antenna or just about any type of wired system,
this idea from Mr. Burgess Brownson looks like a good idea. He used an automotive
spare plug. Voltage breakover points can be set by varying the spark gap distance.
The old vacuum tube transmitters and receivers had a better of chance of surviving
a lightning strike because the components were able to handle much more of a shock
than our modern semiconductor sets with miniature, closely spaced components. Still,
the spark plug setup is better than nothing, if for no other reason than to protect
the shelter. it should suffice. This and many more "kinks" are offered in this 1935
issue of Short Wave Craft magazine...
New Scheme rotates
all Banners in all locations on the page! RF Cafe typically receives 8,000-15,000
website visits each weekday.
RF Cafe is a favorite
of engineers, technicians, hobbyists, and students all over the world. With more
than 16,000 pages in the Google search index, RF Cafe returns in favorable
positions on many types of key searches, both for text and images. New content is
added on a daily basis, which keeps the major search engines interested enough to
spider it multiple times each day. Items added on the homepage often can be found
in a Google search within a few hours of being posted. I also re-broadcast homepage
items on LinkedIn. If you need your company news to be seen, RF Cafe is the
place to be.
 Copper Mountain Technologies develops innovative
and robust RF test and measurement solutions for engineers all over the world. Copper
Mountain's extensive line of unique form factor
Vector
Network Analyzers include an RF measurement module and a software application
which runs on any Windows PC, laptop or tablet, connecting to the measurement hardware
via USB interface. The result is a lower cost, faster, more effective test process
that fits into the modern workspace in lab, production, field and secure testing
environments.
Thursday the 2nd
 When many people hear the name of
Bell Telephone Company, the first thing they think of is the court-directed
breakup of Bell System into what became known as "Baby Bells" after being sued for
monopolistic policies. What is too often forgotten - or more likely never realized
- is the immense role Bell played in the building of America into an industrial
and technology giant. Vintage magazines like this 1949 issue of Radio-Electronics
as well as many other types including The Saturday Evening Post, Popular
Mechanics, Family Circle, and many other publications commonly found
in homes, contained full-page advertisements by Bell Telephone Laboratories promoting
their work and reminding subscribers of how their hard-earned money was being invested
on improvements. Along with the Interstate Highway System, America's robust, dependable,
and high quality personal communications...
 The December 1950 issue of Radio &
Television News magazine ran a series of articles on
Navy communications. This was a mere four years after the end of World War II
and right at the beginning days of the Korean War. Communist and fascist regimes
never give the world a moment's rest (some - not me - think just being nice to them
will cause them to be nice in return). Discussed here are issues still relevant
to modern outfitting of naval assets with new or updated communications equipment.
Unlike land-based systems, naval environments impose increased requirements for
ruggedness due to harsh vibration, impact, and corrosion issues. Weight added above
the waterline needs to be offset with weight below the water line to preserve stability.
Reliability and personnel training also need to be increased because being at sea
means access to replacement parts, operators, and service technicians are harder
to accommodate...
 "The trade of fake goods continues as the
COVID-19 pandemic, chip shortages and other events push more criminals to find new
ways to take advantage of unknowing buyers. Trading fake goods is bad for any industry,
but it's particularly dangerous in the industrial electronics sector, where counterfeit
components pose threats like short circuits, electrical shocks, fires, explosions
and equipment failures. 'Counterfeiters
work hard to mimic not only the product packaging but the actual product as well.
Distinguishing fakes from real parts becomes very hard for consumers..."
 Sam Benzacar of Anatech Electronics, an
RF and microwave filter company, has published his
November 2021 newsletter that features his short op-ed entitled "C-band and
Altimeters: Bad Company? ," where he notes that even though FCC concluded that the
AVSI study "does not demonstrate that harmful interference would likely result under
reasonable scenarios," there is enough concern in the non-standardized radar altimeter
realm to raise a red flag. As Sam points out, there is a full 500 MHz separation
between the C-band wireless band and radar altimeters. Sam also presents some relevant
industry news items as well, including Amazon planning to launch Kuiper satellite
prototypes, and the DoD funding research that combines 5G and optical sensors.
 When
color televisions hit the stores in 1954, most households could not afford one.
For that matter, most households could not afford a black and white TV, either.
By 1959 when this article appeared in Popular Electronics magazine, TV
in general was still a novelty to most people. It is amusing to read about how much
more lifelike everything would appear when broadcast in "living color." Well, duh.
It's as if it never occurred to anyone that the images previously did not contain
color like the real world did. I was born in 1958, and remember that my family's
was last of all the households I knew of to own a color television set. We never
even had a console floor model, just small tabletop pieces of junk. It was a big
deal the day I, at about age 16, bought and installed a remote rotor for the rooftop
antenna so we could receive more than three stations. There was no cable TV service
in our neighborhood...
 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...
 Atenlab has been operating in Taiwan for
more than a decade, and has sold and installed hundreds chambers around the world.
Holistic, affordable Over-the-Air
(OTA) measurement systems perform comprehensive measurement and test in a controlled
environment. Compact Antenna Test Range (CATR) with one-touch operation supports
multiple systems - 2G, 3G, 4G, 5G - and major instrument brands. [M]ulti-probe OTA
measurement systems offer reduced time measurements over single-probe systems.
Wednesday the 1st
  This
is indeed unexpected and sad news.
Joel Hallas, W1ZR, a long-time columnist for American Radio Relay League (ARRL)
publications and an author of multiple books, has left this old world after 79 years.
Since joining the ARRL in 2010 and receiving the monthly QST magazine,
his "The Doctor Is In" column was always the first thing I read. Mr. Hallas
was a master at using EZNEC (soon to be free)
antenna simulation software and used it often to answers readers' questions. Decades
of hands-on experience setting up, operating, troubleshooting, and teaching amateur
radio subject made him an encyclopedia of knowledge. Joel's family surely knows
how admired he was by the hundreds that knew him personally and the thousands of
us who knew him through his works. RIP, Joel Hallas.
 Those of us old enough to remember the classic
Simpson volt-ohmmeter (VOM) from the 1970s will look at this 1949 model appearing
in Radio-Electronics magazine and probably not notice much if any difference.
The basic case design is similar and it appears to be about the same physical size.
The selector switches and potentiometer knobs look familiar as well. The primary
difference is what is inside - a vacuum tube rather than a field-effect transistor
(FET). The
Simpson Model 303 is a vacuum tube voltmeter (VTVM - actually a VTVOH). Prior
to the availability of FETs with their very high input impedance characteristic
(10 MΩ or greater), a vacuum tube input stage was needed to isolate the device
(or circuit) under test (DUT) from the relatively low impedance of the resistor-based
volt-ohm meter (VOM - as with the Simpson Model 260) meter circuitry. The problem
is that a low VOM impedance...
 A team of physicists and engineers at Lawrence
Berkeley National Laboratory successfully demonstrated the feasibility of low-cost
and high-performance radio frequency modules for qubit controls at room temperature.
They built a series of compact RF modules that mix signals to improve the reliability
of control systems for
superconducting quantum processors. Their tests proved that using modular design
methods reduces the cost and size of traditional RF control systems while still
delivering superior or comparable performance levels to those commercially available.
Their research, featured as noteworthy in the Review of Scientific Instruments and
selected as a Scilight by the American Institute of Physics..."
 ...During my last session on the cursed elliptical
machine, for some reason I was
contemplating
pi (π).
Pi has been an enigma in the realm of mathematics and physics since it was first
recognized as being irrational The fact that the ratio of a circle's circumference
to its diameter is an inexact number has caused enormous amounts of consternation
for dogged investigators of the aforementioned phenomenon. Pythagoras is believed
to have first noticed the irrationality of certain numerical ratios when even something
as basic as the corner-to-corner diagonal of a unit square could not be calculated
to a finite precision. In some religious circles even contemplating such thoughts
caused souls to be burned at the stake for daring to assert that such an imperfection
could exist in a perfectly created world. Recall that Galileo was excommunicated
for asserting that the earth was not the center of the universe...
 Rohde & Schwarz, together with ESG Elektroniksystem-
und Logistik-GmbH and representatives of the German armed forces (Bundeswehr), successfully
carried out stationary tests on the premises of the Bundeswehr Technical Center
for Aircraft and Aeronautical Equipment (WTD 61) in Manching. The
influence of rotors on radio waves was tested on two types of helicopters, operational
with the Bundeswehr, the CH53 and Tiger, as well as on the rotary wing UMAT R-350
UAV from ESG. Piloted and unpiloted rotary-wing aircraft of the Bundeswehr need
to be able to send data links through one or more rotor planes, where interference
can by caused by rotor blade modulation. The successfully completed tests demonstrated
how robust the radios are against level drops, phase shifts and diffraction at rotor
blades' edges; while digital voice and data transmission was possible at the highest
sensitivity. In addition, a comprehensive set of data was collected to develop robust
waveforms for broadband data transmission...
 The term "super-radar"
would be sort of meaningless these days since just about everything is "super" anymore,
especially with regard to military, space, or aerospace systems. Not so in 1957
when this Radio & TV News magazine article appeared. Lately, when I hear the
term "super-something," I think of a really funny radio commercial with a meeting
of super-geniuses. I don't recall the exact subjects, but the chairman asks his
members for items to add to their agenda of things to do. Someone pipes up with
an idea to solve world hunger, then another suggests they design a nuclear fusion
generator to power the world with clean energy, etc. Enthusiasm exudes from the
empaneled super geniuses. Finally, someone suggests that they do whatever it is
the commercial is trying to promote (I don't remember what it is), upon which silence
falls over the room and an incredulous person says, "We're super geniuses, but we're
not super super geniuses...
 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 (of course a gratuity will be graciously
accepted). 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 ...
 Triad RF Systems designs and manufactures
RF power amplifiers
and systems. Triad RF Systems comprises three partners
(hence 'Triad') with over 40 years of accumulated
knowledge of what is required to design, manufacture, market, sell and service RF/Microwave
amplifiers and amplifier systems. PA, LNA, bi-directional, and frequency translating
amplifiers are available, in formats including tower mount, benchtop, rack mount,
and chassis mount. "We view Triad more as a technology partner than a vendor for
our line-of-sight communications product line." Please check to see how they can
help your project.
These archive pages are provided in order to make it easier for you to find items
that you remember seeing on the RF Cafe homepage. Of course probably the easiest
way to find anything on the website is to use the "Search
RF Cafe" box at the top of every page.
About RF Cafe. I also
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