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Click here to read about RF CafeView the YouTube RF Cafe Intro VideoKirt Blattenberger ... single-handedly redefining what an engineering website should be.

Carpe Diem!
(Seize the Day!)

5th MOB:
My USAF radar shop

Airplanes and Rockets:
My personal hobby website

Equine Kingdom:
My daughter Sally's horse riding website

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- Welcome to the RF Cafe Website -
"Successful technology is invisible. It gets out of the way and lets us live our lives." - Amber Case of Geoloqi

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Visions of 1946

Visions of 1946, December 1936, Radio-Craft - RF CafeDecember is traditionally the issue for magazines to sum up accomplishments of the ending year and make predictions for the next year. Radio-Craft was no exception, but in 1936 they went ten steps farther and prognosticated a decade into the future - all the way to 1946! It is actually a tongue-in-cheek reprint from Pathe News magazine. However, note the drawing of 'professor teaches 2 million pupils,' where he is instructing via television and the railroad company boss checking in on the conductors en route via wireless teleconferencing. It might have seemed like a pipe dream in 1936, but now it is commonplace. Not only do we now have live classroom broadcasts, but millions of YouTube videos of instruction for performing ...

ARDX V1.3 Arduino Experimentation Kit

ARDX V1.3 Arduino Experimentation Kit - RF CafeCyber Monday is just four days away, so why not use it as an excuse to buy yourself or significant other (wife, husband, teenager, college student) an introductory kit of components to join in on the Arduino craze? Per the sales pitch: "13 circuits to explore microcontroller basics. Covering LEDs, transistors, motors, integrated circuits, pushbuttons, variable resistors, photo resistors, temperature sensors & relays. Comes with an Arduino Uno (the latest Arduino) prototyping bundle to make constructing your circuits and future projects easy. Printed copy of the Arduino Experimenter's Guide."

Electrons Always Find a Quantum Way

Electrons Always Find a Quantum Way - RF CafeScientists from the University of Basel in Switzerland have demonstrated for the first time how electrons are transported from a superconductor through a quantum dot into a metal with normal conductivity. This transport process through a quantum dot had already been calculated theoretically in the nineties, but scientists at the University of Basel have now succeeded in proving the theory with measurements. Transport properties such as electrical conductivity play ...

Notable Quote: Lawrence Krauss

"What Einstein Got Wrong" September 2015 Sciam - RF Cafe"For most of us, the times when we go astray are happily forgettable. In Einstein's case, even the mistakes are noteworthy." - Lawrence M. Krauss, in What Einstein Got Wrong, appearing in the September 2015 issue of Scientific American.

2016 Obamacare Cost for RF Cafe

2016 Obamacare Cost for RF Cafe - RF CafeIt looks like again in 2016 Melanie and I will be without health insurance because of the prohibitive cost of the misnamed Affordable Care Act (aka Obamacare). Not only will we have no insurance, but we will be taxed at a rate of 2.5% of our Modified Adjusted Gross Income (MAGI*) for opting out. Our expected MAGI of about $60,000 amounts to $1,500 being added to our standard income tax - which already includes paying the full amount of the Social Security tax**. What follows is a brief synopsis of our decision-making rationale. Bear in mind while reading that tens of thousands of Americans are making similar decisions nowadays. Prior to 2014, we had ...

Author: Kirt Blattenberger on Google+ Author:
Kirt Blattenberger

Please Welcome Military Radar
Summit 2016 as a Sponsor

Military Radar Summit 2016 - RF CafeJoin us for the 9th annual Military Radar Summit! As the only event in the United States that focuses exclusively on Military Radar, we again will bring together experts and thought leaders responsible for advancing critical discussion on this narrow and deep subject. Whether by land, sea, or air, military radar is used everywhere and requires consistent reexamination to achieve maximum performance. Come ready to learn and engage as this community works towards developing the next generation of capabilities for this essential technology! February 29 - March 2, 2016 Washington, D.C.

79 GHz Frequency Band Approved for
Automotive Radar Applications Globally

79 GHz Frequency Band Approved for Automotive Radar Applications Globally - RF Cafe"Radio-frequency spectrum needed for the operation of short-range high-resolution automotive radar has been allocated in the 79 GHz frequency band. This decision was reached at the World Radiocommunication Conference (WRC-15) meeting in Geneva which tool place from 2 to 27 November. The allocation of the 79 GHz frequency band provides a globally harmonized regulatory framework for automotive radar to prevent collisions, which will improve vehicular safety and reduce traffic accidents. The allocation of the frequency band for automotive radar responds to the call by ..."

Oldest Electronics Companies
Crossword  for November 29, 2015

Oldest Electronics Companies Crossword Puzzle for November 29, 2015 - RF CafeThis week's engineering crossword puzzle features the names of some of the world's oldest electronics companies. Many of them began life with a primary business focus other than electronics, then ended up being known universally for their high tech products. If you're like me, until now you had no idea that one of the world's leading cellular equipment makers originally was a wood pulp mill, and another made playing cards. Clues with asterisks (*) are the featured companies ...

The Architecture of Radio Displays Your
Electromagnetic Field Environment

The Architecture of Radio - RF Cafe"The Architecture of Radio is a data visualization, based on global open datasets of cell tower, Wi-Fi and satellite locations. Based on your GPS location the app shows a 360 degree visualization of signals around you. The dataset includes almost 7 million cell towers, 19 million Wi-Fi routers and hundreds of satellites. A site specific version of the app includes wired communication infrastructure embedded in the exhibition space. It's aim is to provide a comprehensive window into the infosphere." Created by Richard Vijgen. The Architecture of Radio app is currently available for iOS! The Android version is set to follow early 2016.

Li-Fi Is the New Wi-Fi - 100x Faster

Li-Fi Is the New Wi-Fi - 100x Faster - RF Cafe"Step aside, Wi-Fi. Scientists have just taken to the streets with a new wireless technology called Li-Fi, and it's 100 times faster than current speeds. Li-Fi transmits data using visible light communication, and it's now being tested in offices and industrial environments in Tallinn, Estonia. This new wireless system hit speeds of 224 Gbps in the lab, and has the potential to revolutionize internet ..."

Ultra High Definition TV to Exceed
330M Units by 2019

Ultra High Definition TV Sets to Exceed 330M Units by 2019 - RF Cafe"TV manufacturers could have a very good holiday season, and the good times likely will continue through 2019. Sales of 4K or Ultra High Definition (UHD) TV sets will exceed 330M units by the end of 2019... However, while the price of those sets has fallen sharply and likely will continue to fall, a report released this month by the Natural Resources Defense Council contended that new UHD models use on average 30% more energy than their HD predecessors." AGW warriors  would be committing sacrilege by owning one of these ...

Heathkit Advertisement in the
December 2015 QST

Heathkit Advertisement in the December 2015 QST - RF CafeWhile perusing the December 2015 issue of QST magazine, I happened across this advertisement for Heathkit build-it-yourself electronics projects. It has been a couple decades since Heathkit ads have been seen. Hopefully, people will support Heathkit's effort to re-introduce hobbyists to the fun and satisfaction of assembling, aligning, and operating everyday-useful electronics projects. At this time it appears the sole new product offering is the Explorer Jr: TRF AM Radio Receiver Kit. Whether or not a renaissance occurs is largely dependent on how enthusiastically people support their business model ...

everything RF Adds Multiple-Vendor
Quotation Feature

everything RF Adds Multiple-Vendor Quotation Feature - RF Cafeeverything RF has launched a tool that makes it easy for engineers to request quotations for custom products. Users can select a category, enter their requirement and select the manufacturers from the list from who they would like a quotation. They can then, enter their requirement. The inquiry will be directed to the manufacturers who they select. This tool makes it easy to get quotations on custom products from RF & Microwave manufacturer. Try it out now at everything RF.

Mac's Service Shop:
Automation and the Technician

Mac's Service Shop: Automation and the Technician, July 1961 Electronics World - RF CafeOnce transistorized computers made desktop-sized systems a reality, the sure eventuality of humans being replaced by their electronic equivalents became a popular theme of media pundits. News reports and 'special features' on TV at the same time scared citizens concerned for their jobs and assured them that by the year 2000, humans wouldn't need to work anymore anyway because computers and robots would be doing everything for them. The millennium crossover occurred a decade and a half ago as 2015 draws to a close, and looking back it is true that computers and robots have usurped a lot of what used to be done manually, but, as Mac presciently predicts in this story ...

Cobham Launches 'Universal'
Spring Mount Antenna Range

Cobham Launches 'Universal' Spring Mount Antenna Range - RF CafeCobham Antenna Systems, a market-leading antenna solutions provider, is proud to announce the launch of a 'Universal' range of spring-mount omni-directional antennas. A brochure covering the full range is available on request.  Cobham has designed and manufactured spring mount antennas, for over 20 years, with a vast number of happy customers and proven results in the field ...

"As God As My Witness, I Thought
 Turkeys Could Fly"

WKRP in Cincinnati: "As God As My Witness, I Thought Turkeys Could Fly" - RF CafeAnyone who watched the WKRP in Cincinnati sitcom back in the 1970s has to remember what was one of the funniest episodes ever. Here is the 5 minutes that made Prime Time history. In this Thanksgiving episode, station owner Arthur Carlson decided he would do a surprise good deed - that doubled as a promotional stunt - and drop live turkeys from a helicopter for lucky shoppers at the local shopping mall. Watch the disaster unfold as Les Nessman reports live, and then hear Carlson's final comment that is still used or alluded to in many comic routines ...

Simple Radio Mathematics
for the Service Man

Simple Radio Mathematics for the Service Man, September 1930 Radio-Craft - RF CafeIncluded in this first of a series of the 'Simple Mathematics for the Serviceman' series that ran in Radio-Craft is another 'cheat sheet' full of oft-used formulas. It begins with basic Ohm's law, resistance, inductance, and capacitance, then builds from there. What was valid in 1930 is still valid in 2015. See October 1930 for the next installment that includes yet another handy-dandy cheat sheet of formulas ...