Tuesday the 21st
 For some reason, the January 1975 issue
of Popular Electronics magazine, featuring the
Altair 8800 Minicomputer construction article, seems to be the most highly prized
of all editions ever published. They regularly sell on eBay for anywhere from $200
to $500, depending on the condition. If you happen to have one or find one at a
yard sale, hold on to it as an investment (or mail it to me and I will hold on to
it). Computers were still a sci-fi mystery type contraption to most people in the
mid-1970's, and were even considered a thing to fear. Movies about evil-minded nerds
hacking into critical databases and commandeering control of all aspects of life
were popular, and even computers like Hal (2001: A Space Odyssey) that usurped control
from its human inventors were giving the weak-hearted nightmares. Even without a
CRT terminal for an interface, the Altair 8800 was a welcome and somewhat affordable
($400, equivalent to about $2,244 in 2022 money) introduction to computer hardware
and programming. For that much money today, you can get a pretty high-power gaming
computer setup. Notice one of the recommended applications...
 It is common in electronics courses for
an analogy to be drawn between electrical and mechanical phenomena. In fact, a lot
of circuit analysis methods and equations apply directly to mechanics, and vice
versa. An LC (inductor-capacitor) oscillating tank circuit is akin to a spring and
dashpot. Resistance of a wire is likened to skin friction of water flowing through
a hose. Who among us can forget those lessons? This
Electronic Analogy Quiz from the November 1961 edition of Popular Electronics
magazine presents a challenge both because some not-so-familiar examples of analogies
are offered, and because some are a real stretch. Therefore, don't feel too bad
if you don't get a few. That's my way of saying that I didn't get all of them right
;-) Answers and explanations are at the bottom of the page...
 Quantum
Entanglement is a relatively new term in the public technology world, but has
been a physics concept since the days when Albert Einstein referred to to as "spooky
action at a distance. With quantum computers dominating news headlines the term
is seen regularly. IEEE's Spectrum magazine has an article which attempts
to explain it. "When pushed to explain why quantum computers can outspeed classical
computers, stories about quantum computing often invoke a mysterious property called
'entanglement.' Qubits, the reader is assured, can somehow be quantum mechanically
entangled such that they depend on one another. If more detail is needed, the reader
is told that entanglement links qubits no matter how far apart they are - so long
as the qubits are 'coherent.' For the reader, things are far from coherent. Sure,
entanglement is an important aspect of quantum computing. But what exactly is it?
In a few words, entanglement is when multiple objects - such as a pair of electrons
or photons - share a single quantum state..."
 This Radio Service Data Sheet for the
Clarion Model AC-160 A.V.C. Superhet radio "Replacement" Chassis, is an example
of the dozens of similar schematic and alignment instruction sheets that have been
posted on RF Cafe over the years. It appeared in a 1932 issue of Radio-Craft
magazine. "Of the estimated 17 million radio sets now in use in the United States,
the chasses of approximately 11 million are now obsolete, due to the rapid advance
in receiver design." It was likely a replacement for the c1930 Model AC−60. Obtaining
technical information on most things, even readily available items, prior to the
Internet era was often very difficult - if not impossible. Service centers had what
was need provided by manufacturers and distributors, but if you wanted to find a
part number or service data on a refrigerator, radio, lawn mower, garage door opener,
etc., and did not have the original paperwork, you were usually out of luck. Nowadays
a Web search will quite often get you what you need thanks to people...
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...
 PCB Directory is the largest directory of
Printed Circuit
Board (PCB) Manufacturers, Assembly houses, and Design Services on the Internet.
We have listed the leading printed circuit board manufacturers around the world
and made them searchable by their capabilities - Number of laminates used, Board
thicknesses supported, Number of layers supported, Types of substrates (FR-4, Rogers,
flexible, rigid), Geographical location (U.S., China), kinds of services (manufacturing,
fabrication, assembly, prototype), and more. Fast turn-around on quotations for
PCB fabrication and assembly.
Monday the 20th
 According to the statista.com website, there
are about 1.72 billion television sets in the world as of 2021. Radio-Electronics
magazine editor Hugo Gernsback claims there would be
53 million TV sets by 1960, eight years in the future from this 1952 issue.
If so, it would represent a 300% increase over the 1952 number, which would be about
13-14 million. From 14 million to 1.72 billion is more than a 121% increase in seven
decades. That's roughly a 7.1% growth (14E6 x 1.07170 = 1.70E9). How did I calculate
that, you might ask? Take the 70th root of 121 = 70√121 = 121(1/70) = 1.0709. To
check the answer, 1.070970 = 120.9. Consider also that the current TV set number
does not include watching television shows on a computer, tablet, or smartphone.
Similarly, if the number of radios in use in 1952 compared to today would not reflect
the streaming radio shows listened to via the Internet. This demonstrates how when
collecting statistics, the reporter needs to have enough knowledge of the big picture
to either include it in the numbers, or provide a note along with the numbers explaining
what the presentation's method and sources are...
 Theodore Audel, a pen name and company name
(Audel Publishers) used by Nehemiah Hawkins, published many technical handbooks
covering electronics, mechanics, electric motors, mill working, carpentry, machining,
plumbing, masonry, automotive, steam fitting, physical plant engineering, power
generation systems, hydraulics, home appliances, oil burners, sheet metal working,
refrigeration, and even gardening. I have a 1945 edition of Audels Carpenters and
Builders Guide #1 that came from my grandfather, who was a carpenter. It is chock
full of useful information, and I suppose the
Radiomans Guide is as well. The title page quote is, "By Hammer and Hand All
Things Do Stand." Do an eBay search on "audels radiomans guide" to pick up a hard
copy of the original volume for just a few dollars.
 Did
you even know there was such a thing as "World Wi-Fi Day?" Well,
there is, and it is today, June 20th. The World Broadband Alliance has thus declared.
Its website states: "Did you know there are more than 4 billion people around the
world with no internet access? World Wi-Fi Day takes place on June 20th each year,
and is a global initiative to help bridge the digital divide. Access to the internet
provides people in developed and developing countries the opportunity to increase
their economic growth, improve their social mobility and computer literacy as well
as enrich their education prospects." OK, fine. Since it seems anything can have
its "day," I hereby declare July 19th to be
RF Cafe Day, since
it was on that day in 1999 that I registered the rfcafe.com domain.
 The effort to block advertising on radio
broadcasts has been going on for about as long as advertising has been in use, as
evidenced by this 1934 article in Radio-Craft magazine where a "robot"
advertising silencer device is presented for removing "superfluous
advertising." Headlines from a few weeks ago announced Apple's program for blocking
ads that appear on websites, causing a big to-do about how all the "free" content
would be jeopardized since it is the advertisers who pay for the music and other
programming to be delivered to the user. Without the convenience and economy of
software to do the job in 1934, however, fairly complex discriminator circuits were
used to detect and mute the "garrulous announcer or advertiser" between regular
programming. It's pretty funny to read about how annoyed people were with the advertisements
- just like today...
 This has absolutely nothing to do with the
normal RF Cafe theme, but it might come in handy for someone out there who needs
to remove the protective plastic from a new appliance. We recently bought a refrigerator
that came with a protective
plastic film over the doors. It is applied at the factory before assembled,
so the plastic is captured at the interfaces. It therefore; cannot be simply peeled
off - a major pain in the posterior. A web search for advice on removal turned up
all kinds of tricks - chemicals, toothpicks, fingernails - but none worked well.
I then decided to try using a razor blade to run carefully along the interfaces.
The plastic is very thin and soft and scores with almost no pressure. Voila! The
plastic peeled right off leaving no trace or indication that it was ever there.
Try it the next time you need to remove that annoying plastic - you'll be glad you
did!
 A lot of tech news websites have 3rd-party
ads running that currently show an ad from a vintage magazine with a shocking title
about how companies used to get away with printing images and text in advertisements
that would never be tolerated today. I have seen many such ads in vintage electronics
and science magazines as I scan them for useful material, and have posted a few
of them on RF Cafe. Another example is this one run by the
Sangamo Electric Company in a 1949 issue of Radio and Television News.
As with the football team that goes by the same name, no offense was intended by
the name; in fact, it was a positive portrayal of the group's attributes that was
the inspiration...
 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.
 Empower RF Systems is a global leader in
power amplifier solutions. Empower RF Systems is an established and technologically
superior supplier of high power solid state RF & microwave amplifiers. Our offerings
include modules, intelligent rack-mount amplifiers, and multi-function RF Power
Amplifier solutions to 6 GHz in broadband and band specific designs. Output
power combinations range from tens of watts to multi-kilowatts. Unprecedented size,
weight and power reduction of our amplifiers is superior to anything in the market
at similar frequencies and power levels.
Sunday the 19th
 With few exceptions, I, RF Cafe webmaster
Kirt Blattenberger, have for more than two decades designed a custom crossword puzzle
every week for the benefit of website visitors. This
Electronics Theme Crossword Puzzle for was created for June 19th, 2022. All
crossword puzzles use a personally built dictionary of thousands of 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!
 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.
Friday the 17th
 Although the details about types of electronics
schools, locations, specific career goals, funding sources, etc., are a bit different
today than they were in 1952 when this "Selecting
the Right Radio School" article appeared in Radio−Electronics magazine,
the advice offered for consideration is still applicable. You are investing a significant
amount of resources - financially and commitment-wise - so the prudent approach
is to do as much up-front research as possible to help assure you will not regret
your decision. Of course there is always the chance that at some point you'll opt
for a different career - it happens to a lot of people. One big difference these
days is there is probably a lot more in the way of financial assistance available
than back in the 1950s. One of the best ways then and now is to enlist in the military
and take advantage of the schoolroom training and on the job training (OJT), while
collecting a paycheck and having some of the best medical coverage available...
 Synzen Precision Technology will be showcasing
their new range of miniature FPC antennas at this year's Embedded World trade fair
in Germany. The six ultra-compact flexible antennas which make up
Synzen's Constellation Class of antennas feature novel and elegant design solutions
that maintain superior performance, even in very small IoT devices. These antennas
are perfect for asset tracking, OBDII, smart home, smart city, ISM, and wearables.
Not only do they take up minimal space in modules, the antennas also display excellent
coexistence, which means that you can easily integrate more than one antenna into
your device. Furthermore, careful development of the range has ensured the best
isolation with no out-of-band spurious resonances. Synzen's Technical Director,
Chris Tomlin said: "Usually, smaller IoT devices cannot use off-the-shelf FPC antennas
because of lack of clearance and/or space. So, we made a more practical range of
antennas which enables quick integration without the need for expensive and time-consuming
custom designs...
 "Drones
aren't exactly new to wireless networks, but AT&T is claiming an industry first
with a 5G-driven drone launched in - of all places - a field in rural Missouri.
AT&T's drone team picked the field for the April launch of its flying COW (Cell
On Wings vs. the older land-based COWs, or cell on wheels) because it's so remote:
no trees, no houses and no wise-cracking humans. (At least, not until they heard
about it on Twitter.) Ethan Hunt, principal program manager of the AT&T Unmanned
Aircraft Systems (UAS), explained in a press release that AT&T had intermittent,
weak LTE signals at the flight location before they launched the 5G flying COW.
'We flew the drone up to about 300 feet, turned on the signal and it began transmitting
strong 5G coverage to approximately 10 square miles,' Hunt stated. What that means
is customers wit
 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.
 The Douglas DC-3 revolutionized commercial
air travel with its introduction in 1935, and the military version, the
C-47 Skytrain (aka Dakota, aka Gooneybird), proved an invaluable workhorse for
the U.S. Army Air Force during World War II. Without reliable and effective
radio communications, the aircraft's success would have been much less. Companies
like Bendix Radio led the way with rugged avionics that could take the harsh conditions
of flight that include vibration, shock, pressure changes, and temperature variations.
Replacement parts were usually not conveniently on-hand and the radio operator often
needed to also be a trained electronics technician or engineer. "Necessity is the
mother of invention," never proved truer than during wartime as evidenced by the
many technology advances realized during the 1940s...
 To all our customers. Anatech electronics
website was cyber attacked and we had no choice but take it down since it was causing
damage to other parts of our server and computer systems. Be assure that we are
working diligently to remedy the problem which unfortunately will take a while sine
we will have to re-construct our website. A landing page is in the works to get
our visitors the essential links to communicate with us on RF and Microwave filter
product needs. We appreciate your understanding and we will diligently work as usual
to get you the solutions you are looking for.
 Believe it or not, there are people who
pay for vintage advertisements like these (no, I'm not trying to sell it). eBay
is chock full of auctions for original pages from the old magazines that contain
ads for products and services. Often, if you know where to look, you can buy the
entire magazine in which a particular ad appeared for only a little more. People
sometimes frame them and either hang them for decoration or present them to a parent
or grandparent as a memorial to their lives. Stranger things are done. This ad for
Detrola Radio appeared in the January 1945 edition of Radio News. Detrola,
as the name suggests, the company was located in Detroit, Michigan...
/jobs.htm" target="_top">
 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"
target="_top">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...
 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!
Thursday the 16th
 An ample supply of surplus coaxial cable
after the end of World War II provided an inexpensive and easy to use form
of transmission
line. Not having to worry about cable routing and unintentional radiation makes
transitions through walls, running along metal surfaces, and routing high power
transmission lines near habitable areas a no-brainer. Issues like power handling,
bend radius, and higher attenuation need more attention during the installation
design phase, but that pales in comparison to coaxial cable's advantages. In this
1947 issue of the ARRL's QST magazine, author Byron Goodman addresses some
of the issues Hams accustomed to using flat transmission lines (conductor pairs
separated by an insulator)...
 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.
 Now this
is my kind of government program title. It took a significant effort to come up
with the COFFEE name. "The Defense Advanced Research Project Agency (DARPA) has
selected research teams for their
COmpact Front-end Filters at the ElEment-level (COFFEE) program, which seeks
to create a new class of integrable, high-frequency filters with low loss, high-power
handling, and seamless uniformity. The selected teams will be led by Northrop Grumman,
Raytheon, Akoustis, BAE Systems, Metamagnetics, Georgia Institute of Technology,
Columbia University, Carnegie Mellon University, University of Michigan, University
of Texas at Austin and University of California at Los Angeles. The COFFEE program
will focus on creating an integrable filter technology to mitigate interference
and maximize performance across a challenging S-band through Ku-band (i.e., 2 GHz
to 18 GHz) frequency range. These filters must not only distill signals across the
expansive frequency range, but do so while physically bound within an 18 GHz half-wavelength
array pitch..."
 Sam Benzacar of Anatech Electronics, an
RF and microwave filter company, has published his May 2022 newsletter that features
his short op−ed entitled "The
Very Real Vulnerabilities of GPS," where he discusses the inherent vulnerabilities
of using the satellite-based system as a primary Positioning, Navigation, and Timing
(PNT) reference. The Achilles' Heel is how easily the signal can be overwhelmed
and/or spoofed with local transmitters. Alternative technologies are being researched
and developed, including highly accurate and robust inertial references, but to
date none are as precise as GPS. In time, though, a solution will be found. Necessity
is the mother of invention, as the saying goes. Also mentioned are private networks
on the upswing, the fast-growing phased-array radar market, Starlink no longer being
alone, and Dish and Space X duking it out...
 Anyone who used to watch television in the
days when
reception quality at any given time depended on whether your neighbor parked
in certain spot in the driveway, or put up a big metal utility shed or even a large
above-ground swimming pool, or if the air was exceptionally humid or a hammering
downpour of rain or a blizzard was occurring, knows the lengths to which people
would go to obtain a good picture. All sorts of tricks were used by those not familiar
with engineered type solutions as shown in this 1949 issue of Radio-Electronics
magazine. Whereas author Allan Lytel instructs on how to properly tune transmission
lines for optimal reception (including constructing shorting stubs and tuning them
with a razor blade), we uneducated (at the time) rubes resorted to adding lengths
of crumpled tin foil to rabbit ears, rolling the TV (if on a stand) around the room,
repositioning the 300-ohm twin lead cable from the roof-mounted antenna, and even
standing or sitting in certain places in the room to affect the best picture. Yes,
many of us did that, including yours truly. We didn't know why it often worked,
but it did. The same goes for radio reception...
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.
 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.
Wednesday the 15th
 These four
electronics-themed comics appeared in the April 1952 issue of Radio-Electronics
magazine. For those of you not around during the analog over-the-air broadcast era
that existed prior to the industry-wide switchover to all digital transmissions,
"snow" is the noise on the video portion of the composite signal. In areas of weak
signals, the snow could make the channel unusable. It was a big problem for a lot
of people, especially those with a poor TV receiver, an underrated antenna, an antenna
without a rotator for pointing in the direction of the strongest signal (not necessarily
directly toward the broadcast tower), poor lead-in cable, or in a location too far
away from the TV station or in an area blocked by obstacles. The equivalent of snow
in the digital signal world is the broken up, pixelated display when your signal
is low. I think the comic on page 64 is really clever, although it might trigger
a snowflake (whilst on the subject of snow in two of the other comics) out there
who happens to see it...
 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.
 This is a great idea! "A crucial part of
any satellite launched into orbit is its antenna. The challenge, however, is that
its (typically) dish-shaped antenna is big, heavy, and difficult to fit comfortably
into any reasonably-sized rocket fairing. So researchers at Mitsubishi Electric
Research Laboratories (MERL) in Cambridge, Mass., wondered, What if satellites simply
skip over the whole problem? That is, don't bring an entire, oversize antenna assembly
up into space with the satellite but instead 3D print it once the satellite reaches
orbit. MERL has in fact developed an on-orbit,
antenna
3D-printing technology that uses photosensitive resin, hardened by solar ultraviolet
light. The new technique, the researchers say, potentially allows the dish to achieve
high gain and wide bandwidth (which requires a large antenna), while still keeping
the satellite that's launched from Earth lightweight and small..."
 Anyone who has dealt with older electronics
equipment knows that one of the first kinds of components to go bad is the
electrolytic capacitor. Materials used at the time degraded fairly rapidly,
especially compared to modern materials, which facilitated leakage of stored charge
between the rolled up layers of conductive plates and interstitial insulating paper
(or other material) layers. As outlined in this 1957 article from Radio &
Television News magazine, symptoms of electrolytic capacitor malfunction in
radio and television are most often some form of audible noise, light or dark lines
within the picture scan, or outright power supply failure. Since electrolytics are
typically large valued capacitors, they are used in power supply circuits for filtering
the line 50 or 60 Hz (depending on your country) AC frequency (and their harmonics)
and for interstage AC coupling. This article presents a simple method for testing
leakage levels in electrolytic capacitors to determine whether they should be replaced.
Many restorers of old electronic equipment routinely replace all the original electrolytic
capacitors because it is almost certain that leakage will either...
 For many years, I have been scanning and
posting schematics & parts lists like this one for the
Crosley Model 56FC tabletop radio, which appeared in a 1947 issue of Radio
News magazine. Often, a description of the radio's operation and detailed tuning
instructions are provided - sort of like a Reader's Digest condensed version
of the Sams Photofact data pack. In this instance, only the schematic and parts
list are provided. When the textual content is also available, I usually OCR it
and post it along with the graphical stuff. 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 keep a running list of all data sheets
to facilitate a search...
 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!
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