See Page 1 |
2 |
3 |
4 | of the March 2023 homepage archives. Tuesday the 7th
 Three of the most popular topics for comics
back in the day when these appeared in Radio-Electronics magazine were
stereo system fanatics, the battle between television owners and servicemen, and
the notion that electronics product sales people were a bunch of charlatans. The
comic on page 98 is pretty funny, although it might be considered somewhat unacceptable
by today's easily offended population. Seeing the telephone number with a two-letter
prefix (e.g., Rick and Lucy Ricardo's MUrray Hill5-9975 meant their number was M[6]U[8]5-9975)
reminded me of the webpage I found explaining the system. It mentions that many
users opposed the elimination of the prefixes and going to all numbers, including
two organized groups - the Anti-Digit Dialing League and the
Committee of Ten Million to Oppose All-Number Calling. Coalitions of concerned
citizens for every conceivable issue has been around for a long time...
 £57k ($67k U.S.) was the
average engineering salary in 2022. That is down from £58k the previous
year. Factoring in inflation, the pay cut is even more pronounced. "Every year,
The Engineer asks professionals from across the world of UK engineering how much
they are earning, where in the UK they are based, what sector they work in and how
they're feeling about both their jobs and the broader challenges facing industry...
Little did our respondents know that a war in Europe, months of political chaos,
a self-inflicted economic meltdown [COVID hoax - KRB] and a recession would swiftly
put a dent in threat sense of optimism. With that in mind, we awaited the results
of this year's installment with some trepidation..." The entire report goes in to
greater detail.
 It is amazing to me how many times I read
an article, whether in a vintage magazine like this 1947 issue of Radio News,
or a current edition of QST, how when discussing maximum power transfer
from a source to a load, the author states merely that the load impedance must equal
the source impedance. The fact of the matter is that the
source and load impedances must be the complex conjugates of each other in order
for maximum power transfer to occur. That is to say that if the source has a complex
impedance of R + jX, then the load must have a complex impedance of R - jX
(and vice versa) in order for maximum power transfer to occur. If the source and
load are purely resistive, meaning there is no reactive component (X = 0)
to the impedance, technically that does not render the complex conjugate rule void,
merely not of consequence in that case since -j0 = j0...
 Electronic components suppliers like Newark
and Digi-Key can supply
custom pre-packaged parts kits for prototyping and production. "Myriad components
are necessary to produce electronic products and sourcing them separately can be
time-consuming and complicated. Startups and small businesses can benefit from sourcing
kits that include all components needed to complete a product. With so many components
required to produce electronic products, sourcing each part can waste time and complicate
the design process. In this second article in our series, we explore how developers
can benefit from sourcing kits that include all of the components needed to complete
a product -- from the design phase through to the prototype and low- to mid-volume
production. Above all else is the economic advantage. Outsourcing the purchasing
and packaging of components to a knowledgeable distributor simply saves money by
eliminating the complexities of sourcing ..."
 Before the ready availability of inexpensive,
accurate multimeters, obtaining a highly precise measurement of resistance required
something like a
Wheatstone bridge. According to Wikipedia, "The Wheatstone bridge was invented
by Samuel Hunter Christie in 1833 and improved and popularized by Sir Charles Wheatstone
in 1843. One of the Wheatstone bridge's initial uses was for the purpose of soils
analysis and comparison." This article from a 1972 issue of Popular Electronics
magazine discusses the operation of the Wheatstone bridge and includes a construction
project for anyone interested...
 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. If you need your company news to be seen, RF Cafe is the
place to be.
 Since 1996, ISOTEC has designed, developed
and manufactured an extensive line of RF/microwave connectors, between-series adapters, RF components
and filters for wireless service providers including non-magnetic connectors for
quantum computing and MRI equipments etc. ISOTEC's product line includes low-PIM
RF connectors components such as power dividers and directional couplers. Off-the-shelf
and customized products up to 40 GHz and our low-PIM products can meet -160 dBc
with 2 tones and 20 W test. Quick prototyping, advanced in-house testing and
high-performance. Designs that are cost effective practical and repeatable.
Monday the 6th
 The April 1963 edition of Radio-Electronics
magazine had many notable items in its monthly News Briefs feature.
Radio communications was rapidly replacing wired communications was a primary
means of transferring information from point to point. A mere two decades earlier,
troops on the battlefield were unrolling spools of wire over the ground sometimes
for miles to facilitate phone systems at strategic locations. By the time this News
Briefs appeared, international and intercontinental communications radio was the
realm primarily of military, government, and amateur radio operators. A lack of
understanding of the upper atmosphere's physical properties, with their constantly
varying parameters based on solar activity, prevented a commitment to long distance
wireless. The International Geophysical Year (IGY) effort in the late 1950's saw
great leaps of knowledge which were being exploited at a rapid rate in order to
reduce reliance on extreme undersea and overground communications cable. An explosive
demand for TV programming was a big driver...
 Axiom Test Equipment allows you to
rent or
buy test equipment,
repair
test equipment, or sell or trade test equipment. They are committed to providing
superior customer service and high quality electronic test equipment. Axiom offers
customers several practical, efficient, and cost effective solutions for their projects'
TE needs and is committed to providing superior customer service and high quality
electronic test equipment. For anyone seeking a way to offload surplus or obsolete
equipment, they offer a trade-in program or they will buy the equipment from you.
Some vintage items are available fully calibrated. Please check out Axiom Test Equipment
today - and don't miss the blog articles!
 The first
facsimile (fax) machines for home use were receive only, and got their data
not from the telephone line but from a commercial broadcast radio receiver. Radio
Corporation of America (RCA) and Finch Telecommunications were two of the earliest
entrants into the realm. As opposed to modern digital fax machines, these analog
systems used a scanning raster light beam and a photodetector to read and encode
the original document image, and then a complimentary scanning method on the receiving
end literally burned the image into special thermal paper. The Radio Historian website
has an excellent article covering the history of radio facsimile, and how its being
was motivated by the newspaper industry fretting over market share being lost to
commercial AM and FM radio...
 Modelithics is pleased to announce the release
of version 23.0 of the
Modelithics COMPLETE+3D Library for use with Ansys HFSS. This library includes
Modelithics extensive collection of nearly 400 highly scalable Microwave Global
Models™ for capacitor, inductor, and resistor families from many popular vendors.
Also included is Modelithics' collection of over 500 3D electromagnetic (EM) geometry
models for inductors, capacitors, filters, packages, and connectors. With both circuit
and 3D EM models, the Modelithics COMPLETE+3D Library together represent over 26,000
individual components. Version 23.0 adds new substrate-scalable Microwave Global
Models for five ultra-broadband capacitors from KYOCERA-AVX. The models for the
550W103, 550Z104, and 550Z224 capacitors are validated to 110 GHz. Also included
in version 23.0 are new 3D Brick Models™ for the same five capacitors. These 3D
models are intended for full wave 3D electromagnetic (EM) simulations...
 Part 3 of this three-part "The Wavelength
Factor" series is titled "Choice
of Frequency Bands for Civil Defense and U.H.F." It appeared in the August 1952
issue of the American Radio Relay League (ARRL) QST magazine. Part 1 (Influence
of the Antenna of the Choice of Wavelength for Best Communication) debuted the series
in the February edition and Part 2 (Propagation, Modulation, and Receivers) in the
May edition. Author Yardley Beers provides a comprehensive review of transmitter
and receiver powers, antenna gain, and system range that can be expected based on
the presented equations...
/jobs.htm">![Engineering Job Board - RF Cafe]() 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 /jobs.htm">job openings. HR department employees and/or managers of hiring
companies are welcome to submit opportunities for posting at no charge. 3rd party
recruiters and temp agencies are not included so as to assure a high quality of
listings. Please read through the easy procedure to benefit from RF Cafe's high
quality visitors...
 Innovative Power Products has been designing
and manufacturing RF and Microwave passive components since 2005. We use the latest
design tools available to build our baluns, 90-degree couplers, directional couplers,
combiners/dividers, single-ended transformers, resistors, terminations, and custom
products. Applications in military, medical, industrial, and commercial markets
are serviced around the world. Products listed on the website link to detailed mechanical
drawings, electrical specifications, and performance data. If you cannot find a
product that meets your requirements on our website, contact us to speak with one
of our experienced design engineers about your project.
Sunday the 5th
 This week's
crossword puzzle for March 5, 2023 sports an electronics theme. 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 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, Hedy Lamarr, or the Tunguska event in Siberia). The technically
inclined cruciverbalists amongst us will appreciate the effort. Enjoy!
 TotalTemp Technologies has more than 40
years of combined experience providing thermal platforms.
Thermal Platforms
are available to provide temperatures between -100°C and +200°C for cryogenic cooling,
recirculating & circulating coolers, temperature chambers and temperature controllers,
thermal range safety controllers, space simulation chambers, hybrid benchtop chambers,
custom systems and platforms. Manual and automated configurations for laboratory
and production environments. Please contact TotalTemp Technologies today to learn
how they can help your project.
Friday the 3rd
 This brief biography of
Nikola Tesla was printed in a 1963 issue of Radio-Electronics magazine.
Tesla was considered an enigmatic and mysterious person. For someone deemed to be
a loner and recluse, he sure managed to accomplish a lot for the world of science
considering his humble beginnings in Yugoslavia as the son of a clergyman (a lot
of Europe's great scientists were in church service to some capacity). Tesla emigrated
to America in 1884 "with 4¢ in his pocket," which is the equivalent of about a buck
and a half today - basically nothing. Maybe he also had money in his shoe or suitcase
;-) As was the case with many highly successful inventors, he fought many legal,
publicity, and philosophical battles in his lifetime, the most famous of which was
"The War of the Currents," where he, in legion with George Westinghouse, had his
alternating current (AC) power distribution system pitted against none other than
Thomas Edison who promoted a direct current (DC) distribution system - and won...
 Axiom Test Equipment, Inc., an electronic
test equipment rental and sales company has published a new blog post entitled "Electrical
Safety Compliance Analyzers Helps Make More Reliable Designs" that covers how
electrical safety compliance testing is a method of checking the safety of a new
product as it enters its manufacturing phase. Requirements for the measurements
change according to geographic region and pertinent electrical safety standards,
calling for versatile test equipment capable of applying and measuring AC and DV
voltages. Electrical safety compliance testing is conducted according to standards
set by professional safety organizations, such as Underwriters Laboratories and
the American National Standards Institute in the United States. Measurements for
electrical safety compliance testing help find defects in a product as a result
of poor designs or manufacturing errors. Electrical safety testing of an electric
vehicle (EV), for example, ensures the safety of the vehicle's drivers and passengers
with powerful lithium-ion (Li-ion) batteries, whether...
 "Researchers in the US have created the first
high-performance, tuneable and
narrow-linewidth visible-light lasers that are small enough to fit on a photonic
chip. Developed by a team at the Columbia University School of Engineering and Applied
Science, the new lasers operate at wavelengths shorter than the red part of the
electromagnetic spectrum and could be employed in technologies such as quantum optics,
bioimaging and laser displays. 'Until now, lasers with performance similar to ones
we have developed were benchtop-sized and expensive, which made them unsuitable
for high impact technologies such as portable atomic clocks and AR/VR devices,'
explains Mateus Corato Zanarella, a member of Michal Lipson's nanophotonics group..."
 The
Amateur Radio Society of India (ARSI) and the National Institute of Amateur
Radio (NAIR) are two of India's largest amateur radio organizations today. This
story from a 1949 edition of Radio & Television News magazine reports
on the first two such established groups in India, named the Amateur Radio Club
of India (ARCI), and the Short-Wave League of India (SWLI). Neither appears to be
in existence now and I cannot locate any information on them (other than this story).
However, I got this from ChatGPT about ARCI. ChatGPT had nothing to say about SWLI.
Interestingly, the SWLI group was set up for radio enthusiasts who were only listeners
- not broadcasters - and were not necessarily licensed. QRZ India still operates
as a licensed amateur radio operator database...
 Politicians
casually throw around figures in the millions and billions of
dollars
as if it was pocket change. Trillion dollar figures now have joined the parlance
in Congress. Government does not create any wealth on its own; it confiscates the
wealth of citizens under the threat of incarceration. They are the purveyors of
handouts to chosen groups as a solicitation for compensation, be it monetary, obligation
or promise of favor. I call them dealers of OPM (Other People's Money - pronounced
"opium"). As with the drug, addiction and dependency is almost guaranteed. How much
money is involved? Consider this relative to March 3, 2023: A person born a million
seconds ago would be about 12 days old. A person born a billion seconds ago would
have been come into the world in 1991. A person born a
trillion seconds ago would been born in the year 29666 BC, during the
Upper Paleolithic
period.
 Whenever I read the April issue of any magazine,
vintage or contemporary, lurking in my mind is whether it is an attempt at an April
Fools "gotcha." The article title is usually the first clue that the author is trying
to punk me at least provides a sporting chance. Take for instance this "Analog
Logic" piece in the April 1972 edition of Popular Electronics. It could
easily be a hoax, so I proceeded cautiously. It turns out to be completely legitimate.
James Hannas provides a few examples of how analog circuits can be used to perform
mathematical functions that are easily handled by logic circuits. Of course prior
to the introduction of readily available, inexpensive digital integrated circuits
only a few years earlier, all those mathematical functions were performed by analog
circuits, so this was nothing new to most readers. If you have never researched
the capabilities of both analog and mechanical computers, it would be worth your
time; you will be amazed. One example that always impresses me is the electromechanical
systems that pointed and stabilized the massive gun turrets on battleships during
World War II...
 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...
 Since 2003, Bittele Electronics has consistently
provided low-volume, electronic contract manufacturing (ECM) and turnkey PCB assembly
services. It specializes in board level turnkey
PCB assembly
for design engineers needing low volume or prototype multi-layer printed circuit
boards. Free Passive Components: Bittele
Electronics is taking one further step in its commitment of offering the best service
to clients of its PCB assembly business. Bittele is now offering common passive
components to its clients FREE of Charge.
Thursday the 2nd
 Back in the early 1960's when this advertisement
for
Sylvania vacuum tubes appeared in Radio-Electronics magazine, a sure
sign that pressures of competition was getting serious was when retailers offered
S&H Green Stamps. Collecting stamps of all sorts were in vogue at the time because
they could be redeemed for anything from a pencil and pen set to kitchen appliances
and bicycles. My parents, who both were heavy smokers (and each died at age 51 from
smoking-related diseases), collected stamps from Raleigh and Belair cigarettes.
My grandfather, father, his brothers, and I collected postal stamps. Stamp collecting,
except for rare varieties, is pretty much a dead hobby anymore. You can buy sheets
of some new, unused U.S. postage stamps on eBay for less than face value, so that
makes them a great deal for using on your snail mail (they are still good for postage)...
 The
Repo Man might soon
be out of work if Ford has its way. "Titled 'Systems
and Methods to Repossess a Vehicle,' the proposed system would be installed
on any future vehicle that includes a data connection that would disable the 'functionality
of one or more components of the vehicle,' which would include everything from the
engine, the air conditioning, fuel system, and more. The prices for new vehicles
have been steadily on the rise. These increased MSRPs can lead to higher monthly
payments, which in some cases, lead to the vehicle being repossessed by the bank.
With some customers unable to meet raised monthly payments, Ford's latest patent
(US20230055958A1)
could make the repossession process go a lot smoother by cutting the tow truck driver
out of the equation. A patent filed by Ford to the United States Patent Office details
a list of ways for the automaker to reclaim a vehicle from customers not making
the payments, which includes an automated system that tells the vehicle to drive
itself back to the dealership..."
 I wonder why today's editions of the ARRL's
QST magazine does not have a column dedicated to the "YL" (Young Lady,
or female in general) contingent of the amateur radio realm? Ham radio, as most
- if not all - historically male-dominated hobbies has fairly significant outreach
efforts to try attracting women into activities. My Model Aviation magazine
has a monthly column written by a lady whose enthusiasm for model airplanes equals
that of most males - and she's funny to boot! - but it is not dedicated to female
modelers. If there is a girl or woman present at a competition, she is almost guaranteed
to receive coverage in the form of a photograph and/or mention in an article. Any
lack of other-than-male participation these days can only be attributed to a lesser
degree of interest by other than males. Could there really be a difference between
men and women (in general) after all?
 Anatech Electronics offers the industry's
largest portfolio of high-performance standard and customized
RF and microwave filters and filter-related products for military, commercial,
aerospace and defense, and industrial applications up to 40 GHz. Three new
filter models have been introduced - a 2258.5 MHz cavity bandpass filter with
a bandwidth of 6 MHz, a cavity bandpass filter with a center frequency of 2370 MHz
with a 40 MHz bandwidth, and a 7140 MHz cavity bandpass filter with 45 MHz
bandwidth. Custom RF power filter and directional couplers designs can be designed
and produced with required connector types when a standard cannot be found, or the
requirements are such that a custom approach is necessary...
 I spent a lot of time searching - to no
avail - on Google Images for a photo of "The
Radio Beginner" photo mosaic (see below) that, per this 1936 Radio-Craft
magazine article, used to be on display in the RCA License Laboratory in New York.
Author Washburne points out that, as with all areas of pursuit, be they technical,
artistic, or literary, everyone is at some point a "beginner." Each person progresses
at a different pace, and some not at all. It is hard to think of Thomas Edison,
Guglielmo Marconi, Alexander Graham Bell, or Lee de Forest as a beginner, but indeed
they were early on. In 1936, just about everyone was a beginner in the field of
radio communications compared to the current the state of the art...
 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!
 Windfreak Technologies designs, manufactures,
tests and sells high value USB powered and controlled radio frequency products
such as RF signal generators, RF synthesizers, RF power detectors, mixers, up /
downconverters. Since the conception of WFT, we have introduced products that have
been purchased by a wide range of customers, from hobbyists to education facilities
to government agencies. Worldwide customers include Europe, Australia, and Asia.
Please contact Windfreak today to learn how they might help you with your current
project.
Wednesday the 1st
 The January 1960 issue of Radio-Electronics
magazine had only two comics in it. There are usually at least three, and sometimes
as many as five or six. In the days when electronic products were actually serviceable
by skilled technicians, lots of comics and even skits on TV and in movies poked
fun at the often love-hate relationship between customers and repair shops. It is
the same sort of thing as you might have today in relation to your garage mechanic.
The page 52 comic reflects the
extreme level of competition that existed in the consumer electronics market
in the day. Combined with pressures to undercut prices of the shop across town or
down the street, manufacturers were requiring their authorized dealers to provide
and support warranties for which the sellers had to absorb the cost. That broke
the financial backs of a lot of retailers when a particular line of new radios or
TV's ended up being lemons...
 Mr. Peter K., owner of
Dexter's Corner Shop on Etsy, wrote to ask permission to use the schematic he
saw my Buick Sonomatic Auto Radio webpage with the Data Service Sheet from the January
1947 issue of Radio News magazine. He uses vintage line drawings to create
really nice framable images that would look great in a workshop, den, office cubicle,
meeting room, clubhouse, or other venues where such reminders of from whence our
hobbies and professions came are appreciated. I appreciate his bothering to ask
before using it, since there are many instances of people using my work without
credit. In this case, it is not my original creation, but I did scan and enhance
the image from a purchased copy of the magazine. Peter further manipulates the schematic
to render it in sepia tone. He provides the files in a variety of sizes, then you
print and frame it. The cost is a very reasonable $1.94 - barley worth the time
required to process the order, but as a Ham, he does it as a service. BTW, I really
like the "Caps Lock" poster!
 Temwell is a manufacturer of 5G wireless
communications filters for aerospace, satellite communication, AIoT, 5G networking,
IoV, drone, mining transmission, IoT, medical, military, laboratory, transportation,
energy, broadcasting (CATV), and etc. An RF helical
bandpass specialist since 1994, we have posted >5,000 completed spec sheets
online for all kinds of RF filters including helical, cavity, LC, and SMD. Standard
highpass, lowpass, bandpass, and bandstop, as well as duplexer/diplexer, multiplexer.
Also RF combiners, splitters, power dividers, attenuators, circulators, couplers,
PA, LNA, and obsolete coil & inductor solutions.
 These Carl & Jerry adventure tales are
the adventures of two teenage neighbors who share an interest in Ham radio and electronics
in general. They have a reputation as amateur detectives - and sometimes pranksters.
Carl Anderson and Jerry Bishop are the creation of John T. Frye, who published
monthly episodes in Popular Electronics magazine. Mr. Frye is also the author of
the Mac's Radio Service Shop series of instructional stories that ran in Radio &
Television News magazine. This adventure, whose title surely is a takeoff on the
old adage that says, "every dog has his day," is quite a digression from the typical
storyline in that the boys actually engage in a bit of deceit in order to save face
based on a bet made on how their dog (a mutt) could beat the other guy's dog (full-breed
bird dog) at finding a scented decoy. A homebrew transmitter and receiver is involved
in keeping with the overarching Carl & Jerry theme, but in the end the boys
never disclose their "secret" to the challenger after defeating him - and letting
him eat his hat...
 "EPFL researchers have come up with a new
approach to electronics that involves engineering
metastructures at the sub-wavelength scale. It could launch the next generation
of ultra-fast devices for exchanging massive amounts of data, with applications
in 6G communications and beyond. Until now, the ability to make electronic devices
faster has come down to a simple principle: scaling down transistors and other components.
But this approach is reaching its limit, as the benefits of shrinking are counterbalanced
by detrimental effects like resistance and decreased output power. Elison Matioli
of the Power and Wide-band-gap Electronics Research Lab (POWERlab) in EPFL's School
of Engineering explains that further miniaturization is therefore not a viable solution
to better electronics performance. 'New papers come out describing smaller and smaller
devices, but in the case of materials made from gallium nitride, the best devices
in terms of frequency were already published a few years back..."
 Here is the first of a two-part article
on
frequency modulation (FM). FM was a very welcome option for entertainment radio
listeners who had grown weary of static mixed in with their music and syndicated
adventure, drama, and comic programs like The Green Hornet, Lights Out, and The
Life of Riley, respectively. Amplitude modulation (AM) is susceptible to all sorts
of interference from car ignition systems, arcing in electric motors, light switches
being turned on and off, lightning, and a host of other sources. A commercial radio
with good noise and adjacent channel rejection was relatively expensive. Permanent
magnet speakers did not become a standard feature for first few decades of radio
(see my 1941 vintage Crosley radio speaker for an example), so the speaker coils
themselves ended up carrying a lot of the same static biases that the sound signals
contained. Combine far-away transmitters because of wide spacing between broadcasting
facilities with poor receiver sensitivity and the opportunities for interference
was large. FM solved most of the problem both because it inherently was immune to
amplitude modulation from noise...
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...
 Anritsu has been a global provider of innovative
communications test and measurement solutions for more than 120 years. Anritsu manufactures
a full line of innovative components and accessories for
RF and Microwave Test and Measurement
Equipment including attenuators & terminations; coaxial cables, connectors &
adapters; o-scopes; power meters & sensors; signal generators; antenna, signal,
spectrum, & vector network analyzers (VNAs); calibration kits; Bluetooth &
WLAN testers; PIM testers; amplifiers; power dividers; antennas. "We've Got You
Covered."
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
have an extensive list of
Recently Added topics.
Homepage Archive Pages
2024:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2023:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2022:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2021:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2020:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2019:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2018:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2017:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2016:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2015:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2014:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2013:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2012:
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 (no archives before 2012)
|
