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4 of the February 2022 homepage archives. Monday
the 21st
 In the early days of America's official involvement
in World War II (we were unofficially involved in supplying equipment and strategy
much earlier), much effort was expended in educating the public on the implements
and tactics of war. Doing so help engaged citizens and give them a sense of involvement.
Motivating young men (primarily) to volunteer to go far from home to fight an enemy
in places most had never heard of before was a tall order. Sure, a forced conscription
was implemented (the country's first peacetime draft beginning September 16, 1940),
but patriotic volunteers are generally preferred for leadership and long-term commitment
to achieving victory. That's not to say draftees were not likely to turn out being
leaders and career men. Interestingly, so many American men were volunteering for
duty that a presidential order was issued in December of 1942 banning volunteer
service; the government would be the sole determiner of who would be in the service.
...but I digress. This "Nitrogen
Makes High Explosives for Modern War" article...
 As is frequently the case, John T. Frye's
intrepid teenage technophile experimenters,
Carl Anderson and Jerry Bishop, find themselves in an unplanned adventure. Often
times they end up applying their electronics knowledge to bail themselves out of
trouble, but this time the pair - and a friend - ended up helping the police catch
some bad guys (an oft-occurring theme). As you will see after reading "All's Fair
--," the device used would some day (today) be used by automobile manufacturers,
at the behest of law enforcement agencies, to enable remote control of somebody
else's vehicle. This technodrama appeared in the September 1963 issue of Popular
Electronics magazine...
 This
news item appears on the Electronic Design website: "U.S.
Earmarks $5 Billion to Create National EV Charging Network." Fully electric
cars (EVs) have been around for more than a decade now and do not really appear
to be growing in popularity. Hybrid vehicles with both fuel and batteries can be
found since the cars will recharge their batteries without the need for waiting
long times at a charging station. The thumbnail image above is from my local Walmart
store, which partnered with Electrify America to install charging stations all over
the place. I have never seen a single car or truck charging there, and I always
look to see. The ED story begins, "The U.S. Departments of Transportation
and Energy announced that nearly $5 billion will be made available to build out
a national electric-vehicle (EV) charging network, an important step toward making
EV charging accessible to all Americans. This is the largest-ever U.S. investment
in EV charging...
 "The
International Astronomical Union (IAU) has announced details of its new IAU Centre
for the
Protection of the Dark and Quiet Sky from Satellite Constellation Interference.
As the name suggests, it will be concerned with coordinating action to help mitigate
the impact of satellite constellations on ground-based optical and radio astronomy
observations. Specifically, it will coordinate 'collaborative multidisciplinary
international efforts with institutions and individuals and works across multiple
geographic areas.' The IAU has selected the SKA Observatory (SKAO) and the U.S.'s
NSF's (National Science Foundation) NOIRLab as co-hosts of the new IAU Centre..."
 Billed at the time as the longest
microwave relay system in the world, this report on Bell Telephone Systems'
transcontinental installation came just a month after being put into commercial
service. At a cost of $40 million ($442 million in 2021 dollars per BLS Inflation
Calculator) when this article was published in Radio & Television News
magazine, the system relays telephone calls and radio and video program material
along a chain of 107 microwave towers, spaced approximately 30 miles apart. It was
a big deal to be able to watch a TV show from New York City in Los Angeles, and
vice versa; we take worldwide broadcasts for granted nowadays...
 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 stencil symbol has been built to fit proportionally on the included
A-, B-, and C-size drawing page templates (or use your own page if preferred). Components
are provided for system block diagrams, conceptual drawings, schematics, test equipment,
racks (EIA 19", ETSI 21"), and more. Test equipment and racks are built at a 1:1
scale so that measurements can be made directly using Visio built-in dimensioning
objects. Page templates are provided with a preset scale (changeable) for a good
presentation that can incorporate all provided symbols...
 Aegis Power Systems is a leading supplier
of AC-DC and
DC-DC power supplies for custom and special applications. Aegis has been designing
and building highly reliable custom power supplies since 1995. They offer a complete
line of switch mode power supplies and power converters for a variety of markets
including defense, industrial, aircraft, VME, and telecom. Supports military, aircraft,
EV, telecom, and embedded computing applications. Design and manufacture of custom
power supply solutions to meet each customer's exacting specifications. Please visit
Aegis Power Systems today.
Sunday the 20th
 This custom made
Science & Scientists theme crossword puzzle for February 20th is provided
compliments of RF Cafe. All RF Cafe crossword puzzles are custom made
by me, Kirt Blattenberger, and have only words and clues related to RF, microwave,
and mm-wave engineering, optics, mathematics, chemistry, physics, and other technical
subjects. As always, this crossword puzzle 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!
 As you might know if you have been visiting
the RF Cafe website for a while, my specialty while in the U.S. Air Force was
an
Air Traffic Control Radar Repairman (AFSC 303x1). Technical school at Keesler
Air Force Base in Biloxi, Mississippi, included training on the USAF's primary fixed
and mobile radar systems at the time (late 1970s). After graduation, I was assigned
to the 5th Combat Communications Group at Robins AFB, Georgia. There, I worked on
AN/MPN-14 mobile radar system (2 to 3, depending on how many we happened to have
at the time). The AN/MPN-14 was essentially a modified AN/MPN-13 (utility and operations
trailers) with the addition of a large mobile RAPCON trailer. I have attempted over
the years to get hold of the schematics and troubleshooting and alignment technical
orders (TOs), but with no luck. If you happen to have copies of any of them, please
let me know and I will pay to have them mailed to me for scanning, then returned
to you...
 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 12,000 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.
 Berkeley Nucleonics Corporation (BNC) is
a leading manufacturer of precision electronic instrumentation for test, measurement,
and nuclear research. Founded in 1963, BNC initially developed custom pulse generators.
We became known for meeting the most stringent requirements for high precision and
stability, and for producing instruments of unsurpassed reliability and performance.
We continue to maintain a leadership position as a developer of custom pulse, signal,
light, and function generators. Our designs incorporate the latest innovations in
software and hardware engineering, surface mount production, and automated testing
procedures.
Friday the 18th
 If you are familiar with aircraft electronic
navigation systems, reading in this 1951 Radio-Electronics article's opening
paragraph about how "Omnirange
aircraft navigation will make air travel safe, dependable, and predictable regardless
of visibility, and volume of air traffic," really makes you realize how far we have
come in the last seven decades. The network VOR (VHF Omnidirectional Range) station
revolutionized aviation by enabling precision navigation using relatively simple,
reliable, and inexpensive equipment in the cockpit which enables pilots to fly from
waypoint to waypoint across the country. Eventually, five variations of VOR evolved
with ranges going from 25 nautical miles (~29 statute miles) up to 130 nm.
The addition of TACAN (TActiCal Air Navigation) provided slant distance information
to or from the VORTAC station. Since the introduction of full precision GPS, when
the U.S. government unclassified the "P-code"...
 Meet the "skyrmion" - a breakthrough tech
for cryptography and secure communications? It's been almost a decade since news
items began to appear about something in data storage called
skyrmions
- tiny, swirling magnetic spin patterns in thin films. These spinning magnetic swirls
had been proposed over 60 years ago by British physicist Tony Skyrme - from whom
the name derives - but suddenly they seemed a potential game changer for magnetic
data-storage systems. Now a team of researchers at Brown University have found a
novel way to use skyrmions for an entirely new application: generating true random
numbers...
 ConductRF FPA Cable Assemblies use a unique,
Low Loss, high performance
Semi-"FlexiForm" Cable that is formable, but flexible, providing system designers
with a versatile solution for High Frequency applications. The product also allows
for very tight phase matching to ±0.2º. Available in 3 common cable diameters, with
the benefits of higher operating frequencies, shielding effectiveness and stability
performance over traditional standard Hand Formable cables, these solutions enhance
any application requiring higher performance. ConductRF's FPA Cable Assemblies are
manufactured using the latest induction soldering techniques to best ensure the
highest quality and performance because, Results Count!
 National Union Radio Corporation was ahead
of its time in terms of hiring women engineers. Admittedly, they and all other manufacturers
were dealing with a shortage of male engineers due to the ongoing need by the military
for fending off the scourges of fascism, Nazism, communism, socialism, and all the
other "isms" of the day that threatened to overtake the world. However, they should
receive due credit for going out of the way to promote the sciences as careers for
the fairer gender. The advertised positions required the successful applicant to
have earned a bona fide degree in physics, electrical engineering, chemical engineering,
mechanical engineering, mathematics or chemistry. According to a page on the Harvard
Business School website, "The National Union Radio Corporation was incorporated
in September 1929 to acquire...
RF Cascade Workbook 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 (click here for screen capture). 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...
 ASC designs and manufactures hybrid, surface
mount flange, open carrier and connectorized amplifiers for low, medium and high
power applications using gallium nitride (GaN), gallium arsenide (GaAs) and silicon
(Si) transistor technologies. ASC's thick film designs operate in the frequency
range of 300 kHz to 6 GHz. ASC offers thin film designs that operate up
to 20 GHz.
Thursday the 17th
 Samuel Milbourne, of Greenwood, Mississippi,
was a regular contributing author for Radio News magazine. His title was "Expert
Serviceman" and his columns' themes were - you guessed it - servicing electronics
products like radios, phonographs, tape recorders, and even some televisions. Being
the February 1942 issue, the United Stated had just been drawing into World War II
with the bombing of Pearl Harbor by Japan's naval air force. Prior to the attack,
which quickly made headlines across the nation and across the world, many people
did not know much about happenings "over there" in Europe and the South Pacific.
Most people were too busy minding their own business, working hard, and raising
families to be concerned with other peoples' problems - until those problems became
their problems too. The 24-hour news cycle had not been invented and a lack of Internet
ubiquitous and continuous information meant even when you got news it was likely
quite old...
 Of the 5 charts presented to "Help Demystify the
Global Chip Shortage," probably the most telling is the fourth (shown here).
It illustrates how whereas the U.S. significantly leads the way in design and application
realms, China utterly dominates the assembly, packaging, and testing of ICs. As
with just about every other critical resource that make the economy run, we are
totally dependent on China for our supply of chips. What isn't sitting offshore
in container ships waiting to be allowed into port for unloading is being prevented
from entering the supply chain by China - using the spike protein plandemic as a
excuse for buggering the world's progress. Other countries are making plans to decrease
dependence on China for ICs by building domestic capability. Another course of action
would be to dial back the ever-increasing amount of electronics being integrated
into new products. Refrigerators and coffee pots really do not need to be controlled
from your cellphone, and couldn't the world continue to turn if every car and truck
wheel didn't have a Bluetooth-connected
TPMS
device in it (further increasing cost)?
 You will not find the name Central Intelligence
Agency (CIA) mentioned anywhere in this WWII era (1945 Radio News magazine) story
reporting on the activities of the
Foreign Broadcast Intelligence Service (FBIS), since the CIA was not formally
established until 1947. FBIS became a branch of branch the CIA, however. Per
the CIA website "For nearly 70 years, the Foreign Broadcast Information Service
(FBIS) monitored the world's airwaves and other news outlets, transcribing and translating
selected contents into English and in the process creating a multi-million page
historical archive of the global news media." Equally surprising is that the British
Broadcasting Service (BBC) has a similar activity known as the Summary of World
Broadcasts (SWB). Together, their operators attempted to monitor every radio transmission
made worldwide in order to provide intelligence for the war effort. As with so many
forms of technology during the war years, intelligence gathering capability grew
rapidly and significantly. Listening to "chatter" amongst military personnel...
 KR Electronics designs and manufactures
high quality filters for both the commercial and military markets. KR Electronics'
line of filters
includes lowpass, highpass, bandpass, bandstop and individually synthesized filters
for special applications - both commercial and military. State of the art computer
synthesis, analysis and test methods are used to meet the most challenging specifications.
All common connector types and package form factors are available. Please visit
their website today to see how they might be of assistance. Products are designed
and manufactured in the USA.
 Having never owned a diesel-powered car or
truck, I can't say whether not having a high tension (voltage) ignition system eliminates
any possible interference with AM radio reception. Although not many people listen
to
AM radio these days, there was a time when it was still a popular option along
with FM, and a time before that when it was the only option. Diesels have long been
much more prevalent in Europe, so those of you who were around in the era might
recall whether you were contently listening to the BBC in static-free bliss while
your petrol-powered friends were fighting the ignition noise battle with chokes,
capacitors, and resistor wires. Ignition noise did not come only from the car you
were driving; often in high density city environments the interference from nearby
cars, trucks, and buses could render acceptable radio reception impossible no matter
how great the noise mitigation in your own vehicle was...
 Technology shows no signs of stopping - from
laptops and smartphones to crypto-mining and deep learning servers - and San Francisco
Circuits (SFC) is thrilled to contribute advanced PCB manufacturing and assembly
services to this rapidly growing industry. San Francisco Circuits has launched the
second industry focus page, centered on
PCB fabrication for high-performance computing. Printed circuit technology has
seen similar advancements to help propel this industry forward, with high density
SMD components, micro and buried vias, adhering to ever-evolving IPC standards.
Your PCB fabrication and assembly partner needs to stay on top of board technology
trends and meet industry standards for the highest level of computing possible.
SFC not only understands IPC standards for the computing industry, but we meet them,
stay ahead of the curve with trends, use best practices...
 Grid dip meters, aka grid dip oscillators
(GDO in this 1956 Popular Electronics magazine article), are extremely useful for
determining when a circuit is functioning at resonance. In the words of Sherlock
Holmes, "It is simplicity in itself" the way a GDO operates. The grid dip oscillator
emits power at a calibrated frequency which is absorbed (or not) to a degree depending
on how close to resonance the external circuit under test is to that frequency.
The nice thing about this type of instrument is that it does not need a wired or
other type of physical connection to the circuit. Of course modern day GDOs do not
use vacuum tubes with grids that register relative current levels as an indication
of resonance, but the nomenclature has persisted. Besides, there are still many
classic grid dip meters both in use and available for purchase at Ham swap meets
and on venues like eBay. In fact, the exact Heathkit model GD-1A featured here is
currently listed...
 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 ...
 LadyBug Technologies was founded in 2004
by two microwave engineers with a passion for quality microwave test instrumentation.
Our employees offer many years experience in the design and manufacture of the worlds
best vector network analyzers, spectrum analyzers, power meters and associated components.
The management team has additional experience in optical power testing, military
radar and a variety of programming environments including LabVIEW, VEE and other
languages often used in programmatic systems. Extensive experience in a broad spectrum
of demanding measurement applications. You can be assured that our Power Sensors
are designed, built, tested and calibrated without compromise.
Wednesday the 16th
 Although this "Algebra
in Electronic Design" article in the February 1952 issue of Radio-Electronics
magazine does not claim to be the second part of author Edmund Berkeley's "Light
Sensitive Electronic Beast" article from the previous December's issue, it does
help to know that the "Squee" mentioned here came from there. Squee is a Robot Squirrel
which has four sensing organs, three acting organs, and a small electronic and relay
brain. "Although Squee is not a very clever robot, he does have a small amount of
memory and of reasoning ability." Boolean logic (aka Boolean algrbra), a common
part of modern electronic circuits and systems, was a relatively new concept only
recently adopted from the field of theoretical mathematics for use in digital computers.
Applications were basic AND, OR, and NOT "gates" comprised of discrete diodes (and
vacuum tubes at that) since transistors and solid state diodes had only been commercially
available for a couple years. In fact, solid state diode schematic symbol appears
in the article along with vacuum tube diode symbols...
 At least for now, I am going to only scan
and post schematics & parts lists like this one featuring the
Garod model 5A1 "Ensign" tabletop radio in graphical format. It appeared in
the September 1947 issue of Radio News magazine. There are still many people
who restore and service these vintage radios, and often it can be difficult or impossible
to find schematics and/or tuning information. I will keep a running list of all
data sheets to facilitate a search...
 RIGOL Technologies is transforming the Test
and Measurement Industry. Our premium line of products includes digital and mixed
signal oscilloscopes, spectrum analyzers, function / arbitrary waveform generators,
programmable power supplies and loads, digital multimeters, data acquisition systems,
and application software. Our test solutions combine uncompromised product performance,
quality, and advanced product features; all delivered at extremely attractive price
points. This combination provides our customers with unprecedented value for their
investment, reduces their overall cost of test, and helps speed time to completion
of their designs or projects.
 "Researchers in Japan have proposed a new
way of defining the
standard unit of electrical resistance that would do away with the need for
strong magnetic fields. The new proposal, which would create a standard based on
the quantum anomalous Hall effect instead of the ordinary quantum Hall effect, would
considerably simplify the experimental apparatus required to measure a single quantum
of resistance. Electrical resistance is a physical quantity that represents how
much a material opposes the flow of electrical current. It is measured in ohms (Ω),
and since 2019, when the base units of the International System of Units (SI) underwent
their most recent revision, the ohm has been defined in terms of the von Klitzing
constant h/e2, where h and e are the Planck constant and the charge on an electron,
respectively. To measure this resistance with high precision, scientists use the
fact that the von Klitzing constant is related to the quantized change in the Hall
resistance of a two-dimensional electron system..."
 Sam Benzacar of Anatech Electronics, an
RF and microwave filter company, has published his February 2022 newsletter that
features his short op-ed entitled "Wi-Fi
HaLow Takes Aim at Long-Range IoT," where he points out a serious limitation
to the evolving mm-wave craze that is synonymous with 5G and 6G (a major component
of IoT). The super wide bandwidths available with mm-wave are great, but the familiar
Friis equation governing free space path loss shows that power at the receiver (PRx)
decreases at a rate of 20 dB per decade as frequency increases. Wi-Fi HaLow
operates in the sub-1 GHz realm, so it naturally (literally) has a longer range
than even the 2.4 and 5 GHz ISM band WiFi systems. Also included in this newsletter
are a few stories on industry happenings like the FCC mandating specific specification
labels for WiFi products and mm-wave shoe screening at airports (underwear screening
comes next)...
 For a long time, I have been scanning and
posting Radio Service Data Sheets like this one featuring the
Emerson Model AZ-196 (Chassis AZ) tabletop radio. It appeared in the August
1938 issue of Radio-Craft magazine. There are still many people who restore and
service these vintage radios, and often it can be difficult or impossible to find
schematics and/or tuning information. Back in the day, both service shops and do-it-yourselfers
relied on these documents for making repairs and tweaking the performance since
manufacturers would not make the information available to anyone other than an authorized
dealer. A nicely restored example of the Emerson Model AZ-196 can be seen at the
left. A running list of all data sheets is at the bottom of the page to facilitate
a search.
 It was a lot of work, but I finally finished
a version of the "RF & Electronics Schematic & Block Diagram Symbols" that
works well with Microsoft Office™ programs Word™, Excel™, and Power Point™.
This is an equivalent of the extensive set of amplifier, mixer, filter, switch,
connector, waveguide, digital, analog, antenna, and other commonly used symbols
for system block diagrams and schematics created for Visio™. Each of the 1,000 or
so symbols was exported individually from Visio in the EMF file format, then imported
into Word on a Drawing Canvas. The EMF format allows an image to be scaled up or
down without becoming pixelated, so all the shapes can be resized in a document
and still look good. The imported symbols can also be UnGrouped into their original
constituent parts for editing. Check them out!
 Exodus Advanced Communications is a multinational
RF communication equipment and engineering service company serving both commercial
and government entities and their affiliates worldwide. Power amplifiers ranging
from 10 kHz to 51 GHz with various output power levels and noise figure
ranges, we fully support custom designs and manufacturing requirements for both
small and large volume levels. decades of combined experience in the RF field for
numerous applications including military jamming, communications, radar, EMI/EMC
and various commercial projects with all designing and manufacturing of our HPA,
MPA, and LNA products in-house.
Tuesday the 15th
 Sylvania Electric Products was born out of
Hygrade Sylvania Corporation in 1942, and continued until 1959 when it merged with
General Telephone to form General Telephone and Electronics (GTE). That puts this
1951 promotion in Radio-Electronics magazine smack dab in the middle of
their existence. Sylvania, like most major electronics products companies of the
era, made vacuum tubes, CRTs, incandescent lamps, radios, even proximity fuses for
warheads during World War II. In the 1960s and 70s, Sylvania produced semiconductor
components and computers. Brick-and-mortar stores, whose primary competitors were
mail-order businesses back then, were typically replete with sales promotions like
this one featured in Radio-Electronics. Sylvania is now part of the LEDVANCE
brand, owned by Chinese lighting company MLS. Is there any real American anything
left anymore? Here is the Archive.org page on Sylvania's history, and here is an
interesting piece on founder Frank Poor (who wasn't so poor following the company's
immense success)...
 In the 1930s, electricity and electronics
were mysteries to most of the population. The concepts were relatively new and few
had a firm grasp on the technology. That reality was exploited by Hugo Gernsback
during the
1934 Electrical Exposition to challenge attendees to discover how the radio
receiver sitting on the top of an empty, clear glass case was being powered. It
was a clever ruse that reportedly stumped most people. The secret is revealed here
in this 1934 issue of his Radio-Craft magazine. BTW, my guess is that an
even smaller proportion of our current citizens would be able to figure it out,
or for that matter even realize that maybe there should be a power source of some
sort...
 Covering 24 to 40 GHz, the versatile portfolio
showcases an integrated module and discrete beamforming and up-down converter RFICs.
pSemi Corporation, a Murata company focused on semiconductor integration, announces
the expansion of its millimeter wave (mmWave)
RF front-end portfolio for 5G wireless infrastructure applications. The new
pin-to-pin compatible products, including three beamforming ICs and two up-down
converters, offer flexibility to interchange ICs for full IF-to-RF coverage across
the n257, n258 and n260 bands. This modular approach, combined with on-chip calibration
and digital correction, allows system teams to simplify their design cycles and
quickly adapt to different active antenna design configurations. Available as discrete
RFICs or as part of the Murata 28 GHz antenna-integrated module...
 San Francisco Circuits (SFC) has launched
a new industry focus practice, highlighting PCB fabrication and assembly for high-tech
industries. The first details
PCB production for the medical and device/instrumentation industry. The
new industry focus page on medical PCB fabrication and assembly covers common use
cases, best practices, capabilities, testing/inspection guidelines, and industry
standards. Medical device standards are important to consider when working with
a PCB supplier. The largest governing bodies of medical device standards includes
the IEC, ISO, the FDA, and the FCC. Typically, all medical devices will be compliant
with ISO 13485 (used by organizations involved in the design, production, installation
and servicing of medical devices. ISO 13485 is the FDA's mandatory quality management
system for medical devices)...
 Here is a perfect example of setting up a
"straw man" in order to knock it down. Per Merriam Webster, a "straw man" is, "A
weak or imaginary argument or opponent that is set up to be easily defeated." The
advertising team didn't even do a very good job of it since nowhere in the copy
is there a reference to why the
Indian Rope Trick in particular is alluded to regarding Mallory capacitors.
It mentions a "trick," but that's all. Ah, I just figured it out - they hanged themselves
professionally with the rope! BTW, type "FP" supposedly stands for "Formed Plate,"
a special method Mallory used to increase the surface area of metal layers to get
higher capacitance densities...
RF Cascade Workbook 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 (click here for screen capture). 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...
 Withwave manufactures an extensive line of
metrology quality coaxial test cable assemblies, connectors (wave-, end-, vertical-launch,
board edge, panel mount), calibration kits (SOLT), a
fully automated
4-port vector network analyzer (VNA) calibrator, between- and in-series connector
adaptors, attenuators, terminations, DC blocks, torque wrenches, test probes &
probe positioner. Special test fixtures for calibration and multicoax cable assemblies.
Frequency ranges from DC through 110 GHz. Please contact Withwave today to
see how they can help your project succeed.
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.
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2012:
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13 (no archives before 2012)
- Christmas-themed
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