1996 - 2016
BSEE - KB3UON
RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...
All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.
My Hobby Website:
These engineering, electronics, and technical websites provide a wealth of information.
Latest information on 3G wireless technology.
555 Timer Circuits
The 555 timer is a simple IC that can be used to make many different circuits. With this information you will learn how how the 555 works how to build some of the circuits presented.
+44 (0) 1784 455511 / Staines, England Expertise in technology from engineer and author Ian Poole. Technical journalism, training and electronics engineering services.
Amateur Television Quarterly (ATVQ)
Quarterly publication about amateur television and SSTV with construction articles, local activity, ATV repeater information, building of antennas, RF filters, helium balloons and R/C models with ATV and more.
American Institute of Physics
Journals, software, history of physics - very interesting.
American Museum of Radio
Where Discovery Sparks Imagination - located in Bellingham, Washington.
Antennas & Microwaves Resources
As a practicing Antenna engineer for some 14 years, this page probably comes under the heading “old habits die hard”. The contents are basically things that I have found interesting or useful over the years or that I am still tinkering with: Previous work; Test antennas; How to make a reference dipole (designs are best suited for the frequency range 800-3000 MHz); A few projects I have worked on; Planar Scanning (a practical look at the surface currents and voltages on some common antennas); Balanced measurements (calculating balanced impedances from single ended S-parameter measurements); Defining, evaluating and using coordinate transform matrices; VNA for WinSpice3
Antique Wireless Association
This is a great historical resource! The Antique Wireless Association is an organization of some 4,000 members linked by a common interest in the history of electrical and electronic communications.
ASTM International Website
American Society for Testing and Materials. ATCSCC
This is one of the most complete collections of BT info on the web.
Lots of good RF circuit design stuff here - including lots of software links!
Links to Digi-Key, Allied, etc.
Extensive collection of timelines and photos that trace the history of computers, processors, the Internet (beginning as Darpanet), memory storage and much more.
Circuit schematic/descriptions database, test equipment for sale, forum, & more...
A collection of 8000+ electronic circuits or schematics.
EE HomePage.com is targeted at electrical engineering professionals, educators and students. The site contains tools, reference materials and advice to assist EEs in improving their skill sets and managing and promoting their careers.
Categorized links of electronic component manufacturers and tools to help electrical engineers in their work.
EE Product Center
Editors report on the very latest IC and components to hit the streets, breaking product information first, helping you make design decisions faster.
EE Times Design Library
Contributors to the library are EEdesign, CommsDesign, Planet Analog, Embedded.com, EETimes UK and EETimes' In Focus section.
EEWeb is a premier electrical engineering community that strives to offer its members the best online resources for hardware designers. EEWeb is independently owned and operated by co-founders Cody Miller and Joe Wolin. We have partnered with Digi-Key Corporation as an exclusive sponsor of EEWeb.
EFG's Physical Scienc & Engineering References
Physical Sciences and Engineering collection of software and online demonstrations.
Electrical Engineering Sites
Institutions, organizations & labs, engineering related Corporations, engineering universities, product sites, misc.
Dedicated to the spread of electrical knowledge and expertise, by David Herres, NH Master Electrician License #11335M
Electronics and Radio Today
An e-zine resource for everyone interested in electronics and radio. The site gives a huge amount of information about electronics and radio topics and it is especially useful for anyone studying electronics. Included on the site are such topics and basic electronics and radio concepts, basic components, analogue circuits, logic circuits, radio, ham radio, constructional techniques and much more. By engineer/author Ian Poole.
Electronics circuits, plans, diagrams, forums & more.
Aggregation web site which links to selected Engineering News web pages from around the world. Engineering trivia (engcom.net/engineering/blogcategory/44/81) & a virtual slide rule (engcom.net/component/option,com_sliderule/Itemid,73).
Large collection of engineering courses, prototyping kits, and services.
Engineering Statistics Online Handbook
Directed towards teenagers, parents, journalists, and indeed, the general public. It gives a general idea of the challenging, exciting, and rewarding career one can expect as a Professional Engineer. Career-guidance teachers will also give you professional advice, if requested.
Electrostatic Discharge Association official website.
Find RF & microwave components, equipment and services - 153,871 RF & microwave products from over 425 companies listed in 180 categories. Download hundreds of vendor white papers.
FCC Office of Engineering & Technology
Manages the RF spectrum and provides leadership to create new opportunities for competitive technologies and services for the American public.
FCC RF Safety Page
FAQs, cell phone SAR, safety bulletins, facts sheets, guidelines.
Federation of American Scientists (FAS)
Focuses the resources of the scientific and technical community on some of our nation's most critical challenges.
The home page of the finishing industry -- metal finishing, allied surface finishing, forum.
Includes LCD, LED, schematic symbols and more.
My goal is to make Fourier series and other difficult technical subjects come to life with interactive programs. By manipulating these programs, the equations in the textbooks become easier to understand. Also included are tutorials on Smith Chart, complex numbers, Fourier transforms, VSWR, and more.
Frank Potter's Science Gems
Great links to great science resources. For students, parents, teachers, scientists, engineers and mathematicians. More than 14,000 science resources sorted by category, subcategory, and grade level.
919-876-6220 / Raleigh, NC
Develops unique form, fit and function antennas for unique applications and requirements. Very simply, we design and manufacture antennas unlike any other antennas in the world. Custom designs available.
The Heathkit Virtual Museum
This commemorative virtual showcase takes you back to the Heathkit age which began in the late 1940's and lasted through the early 1990's. Revisit your favorite kits and experience once again that excitement of building your first kit -- and the hope that the equipment would work the first time you turned on the power.
High Technology Finland
Yearly profiles a broad cross-section of the exciting work being done by Finnish companies and researchers.
Easy-to-follow, menu-driven searches. Users can look for power design information as it relates to specific application areas, or narrow their searches by focusing on particular power supply functions, design disciplines, power converter topologies, component types, or environmental requirements. A popular topics search locates frequently sought-after design information on subjects such as energy efficiency, power factor correction, and LED lighting.
A resource for hobbyist, engineers, students, R&D persons & consultants, electronic projects, circuits, electronic tutorials, microcontrollers, diagrams, moving displays, transmitters, receivers, robotic arm, engineering projects, wide range of electronic materials and solutions.
GSM phone reviews - performance and features.
How Stuff Works
From the people that bring you the books by the same title.
Online database with over 50 million orderable parts.
International Engineering Consortium - a nonprofit organization dedicated to catalyzing technology and business progress worldwide in a range of high-technology industries and their university communities.
IET - Institution of Engineering and Technology
The Institution of Engineering and Technology is one of the world's leading professional societies for the engineering and technology community. The IET has more than 150,000 members in 127 countries and offices in Europe, North America and Asia-Pacific. The IET provides a global knowledge network to facilitate the exchange of ideas and promote the positive role of science, engineering and technology in the world.
Institute of Electrical and Electronics Engineers.
Standards, regulations and technical specifications.
The International Bureau of Weights and Measures
BIPM was set up by the Metre Convention and has its headquarters near Paris, France. It is financed jointly by the Member States of the Convention and operates under the exclusive supervision of the CIPM. Its mandate is to provide the basis for a single, coherent system of measurements throughout the world, traceable to the International System of Units (SI).
Institute of Interconnecting and Packaging Electronic Circuits.
International Organization for Standardization.
International Telecommunication Union website.
Jim Tonne (WB6BLD)
tonnesoftware.com | tonnesoftware.com/appnotes.html
A technically-oriented site for engineers, technicians and radio amateurs.
An extensive searchable database of material data sheets.
Microwave Product Digest
201-569-5870 / Englewood Cliffs, NJ A new product magazine devoted to information on components, equipment and subsystems for the RF, microwave and wireless industries.
Welcome to Microwaves101, your number-one source for microwave information since the previous unenlightened century. It's safe, effective, all natural, and it works! We're building a practical web resource covering the fundamental principles of microwave design, just for microwave engineers like you.
Specifications, standards for military components.
Mr Test Equipment
Free PDFdata sheets for electronic test equipment - technical documentation for Agilent, HP, Tektronix, Marconi, Acterna, Fluke, Rohde & Schwarz and LeCroy available. Specializes in sales of refurbished (reconditioned with full warranty) electronic test and measurement equipment like oscilloscopes, spectrum analyzers, network analyzers, signal generators, logic analyzers, etc.
Mobile Tech Today
News & product reviews for mobile tech users.
National Council of Examiners for Engineering and Surveying the PE licensing people.
National Physics Laboratory
The U.K.'s national measurement Laboratory.
National Science & Technology Education Partnership
Creating partnerships between the business and educational communities.
National Society of Professional Engineers
Creating partnerships between the business and educational communities.
NIST's Electronics and Electrical Engineering Lab
The EEEL provides the fundamental basis for all electrical measurements in the United States. In close consultation with industry, we tailor research and calibration programs to meet the most critical measurement needs for the manufacture and operation of electrical and electronic systems.
NIST's Microectronics Research Program
Goal - To develop techniques and standards that address critical metrology needs of the U.S. semiconductor industry, including those defined by industry roadmaps such as the Semiconductor Industry Association (SIA).
Nobel Prize Website
Official site of the Nobel Foundation. Among other things, links to articles written by Nobel laureates are available.
National Electrical Manufacturers Association.
National Institute of Standards and Technology, Boulder, CO.
The data source for Pb-free electronics assembly.
Mega parts locator search engine.
IBM, U.S., European patent research sites.
Very useful reports on cellphones, including technical specifications and photographs. Where applicable, a direct link into the FCC qualification database is provided.
Ian Poole, founder of Adrio Communications (adrio-communications.com) and prolific author of many technical books and articles, presents Radio-Electronics.com: The online resource centre for free radio and electronics tutorials, articles and data.
A website dedicated to the webmaster's father, Hans E. Hollmann, who is often referred to as "Father of Modern Radar and Microwave Technology." Lots of photos and text on early radar system development.
No, this is not just another website with a Java calculator for figuring relativistic speeds, lengths, or masses. It is a fairly comprehensive collection of all matters related to relativity. Topics like "The FitzGerald-Lorentz Solution to the Michelson-Morley Null Result," "Stationary vs. Moving Clocks," and "The Heart of Special Relativity: Lorentz Transformation Equations" are just a small sampling of what you will find there.
RF Design House
This site is only in the Korean language.
Premier RF & microwave engineering website. A VerticalNet company.
818-716-2734 / Los Angeles, CA RFID news weblog updated daily.
RFMW Design is a resource for the RF & Microwave Community providing Design Articles & Tutorials for RF/RFIC Circuit Design and Wireless Technologies. Lots of links and data on antennas, RFIC, VCOs, ZigBee, WiMax, Bluetooth, and more.
RF System Design
Free software tools, forum and other resources.
RF World is a resource site for electrical engineers. We are developing it as an engineering community site. RF related companies can have a page with their company info, publish press releases, and be linked through the components directory. Individuals can read the latest news, publish technical articles, start discussions, and view upcoming events.
Electronic Design's resource for keeping abreast of the RoHS Directive
Sam Barros' Power Labs
A great high voltage gadgetry and experimentation site.
"Your link to the latest research news".
Surface Mount Technology Association
Industry portal site bringing together providers and users of the products, services, and information related to electronics manufacturing.
Society of Broadcast Engineers
Like it says.
Society of Women Engineers (SWE)
Premier women's engineering organization.
Everything spread spectrum.
Technical Museum Links
Links to worldwide museums housing a variety of technical items of interest including amateur radio, computer history, electrical scientific apparatus, espionage, science, and more.
Articles and information on technology.
Electrical engineering education and information.
500,000 book titles; 10,000 publishers; 91,000 downloadable documents.
A uniquely valuable resource for IT professionals, offering the best of both worlds: A distinctive combination of top-notch original content and one-stop, contextual access to the resources of CMP's network of industry-leading technology publications.
About Temperature Sensors is a unique, free internet information/education Web site aimed directly at Engineers, Scientists, Technicians and Students to help them learn about temperature sensors and how to effectively use them.
The EE Compenduim
The EE Compendium is a resource for the working electronics engineer, with book and tool recommendations, microcontroller information, electronic projects, free source code, industry links, and much more.
The Engineer's Club
A "PLACE" for engineers and technical professionals around the world to find resources and links to other helpful sites.
TNT (TechNote Time) Electrical Trades Gift Store
352-522-0415 / Dunnellon, FL
Th premier Ohm's law and novelty gift store for electricians, the power lineman, electrical engineers, electrical contractors, apprentices/students and ham radio operators! - Hundreds of electrical themed gifts!
Dedicated to preserving the history of the greatest invention of the 20th Century.
TV History - the first 75 Years
Divided into eras and contains many photos of TV sets, past and present, with patents, magazines and timelines.
University of California @ Irvine Libraries
Huge collection of online data on everything imaginable.
News, info and facts.
University of Washington's Circuits Archive
This is a site devoted to expanding the availability of circuit designs to engineering students, and even engineering professionals.
University of San Diego EEE 171
Applied Engineering Electromagnetics,
RF & Microwave Engineering - lots of good course notes by professor Ernie Kim.
Electrical and electronics engineering.
802.11 standard provided by the IEEE.
Wireless Net DesignLine
Source for how-to information created for the engineering community by engineers. "Everything you need to know about wireless networking design." Libraries, blogs, product info and more for Bluetooth, WLAN, ZigBee, UWB, ISM.
World Science Website
This site is chock-full of good science news that covers astronomy, archaeology, medicine, physics, biology...
Yahoo! Electrical Engineering
Yahoo!'s collection of sites.
An association of companies working together to enable reliable, cost-effective, low-power, wirelessly networked, monitoring and control products based on an open global standard.