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The inventions and products featured on these pages were chosen either for their uniqueness in the RF engineering realm, or are simply awesome (or ridiculous) enough to warrant an appearance.

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As of this writing, AR RF/Microwave Instrumentation is now offering a few wall posters designs at no charge. Among the themes are " RF and EMC Formulas and Charts," "Mathematical Tools of the Trade," and "Radiated And Conducted Immunity Test Requirements & Solutions."

Wall Posters by AR RF/Microwave Instrumentation - RF Cafe Cool Product

Wall Posters by AR RF/Microwave Instrumentation

Wall posters used to be a common sight decorating engineering labs and engineers' and technicians' cubicles, but since the smartphone boom began, fewer and fewer of them have been made available. Even with apps for just about every imaginable topic available literally at your fingertips, sometimes it is handy to look at a large size printed chart for quick reference.

If you would like one of these posters you had better put in your request now because they could be gone at any time. 


About AR RF/Microwave Instrumentation

It all began in 1969 with two men in a cellar. They saw a market for their skills in designing amplifiers for test applications. "We started the company in my basement. Because the only place we could go from there was up." – Don Shepherd

AR RF/Microwave Instrumentation is the World-Class Source For: Broadband High Power, Solid State, RF Amplifiers and Microwave Amplifiers … TWT Amplifiers …Log Periodic Antennas and High-Gain Horn Antennas … EMC Test Equipment … Hybrid RF Power Amplifier Modules and Software, Field Probes and Monitors AR RF/Microwave Instrumentation as part of the AR family, which also includes AR Modular RF, we are recognized around the globe for products that deliver both outstanding quality and exceptional value.


Contact Info

AR RF Microwave Instruments
160 Schoolhouse Rd.
Souderton PA 18964-9990 USA
Phone: 1-215-723-8181

Web: arworld.us

E-Mail:  info@arworld.us



Posted June 1, 2022

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    Kirt Blattenberger,


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 World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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