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:
This collection of video and a few audio files represents files that have been featured on the RF Cafe homepage. Every week or so a new file is added that should be of interest to RF Cafe visitors.
Please send me an e-mail if you have a good subject. Note: "Videos for Engineers" formerly went by the name "Cool Videos."
Human Tetris. Must be college students
- who else would have the time (and ability)?
Watch this amazing Star Wars X-Wing Fighter 1/2-size model rocket launch. The building skill is phenomenal. Skip to about the middle to see just the launch. According to reliable witnesses, here is what really happened.
Twin Tesla Coils played the Dance of the Sugar Plum Fairy at the Lawn Teslathon in Baraboo, WS. There are no speakers; the music comes from the coils.
It was on September 11, 1977 that David Bowie and Bing Crosby joined together at the Elstree Studios in London, England. Crosby was there to tape what would prove to be his final Christmas TV special (he died on October 14, 1977 — 33 days after taping the duet) and he invited Bowie to appear as a guest star.
A video that's worth a million words. This short film depicts the beauty of Möbius Transformations. The movie demonstrates how moving to a higher dimension can make such transformations easier to understand.
Brookhaven National Laboratory's Willy Higinbotham created this "Tennis for Two" precursor to "Pong" for "Visitor’s Day" in 1958. The video shows the controllers and circuit board - complete with mechanical relays that cause the sound.
"It's almost a shame that the Navy's electromagnetic railgun (EMRG) can
fire projectiles at targets up to 200 nautical miles away. If the enemy could see this thing fire, they'd
Here is a great practical demonstration of Lenz's Law. This is a fitting video for posting on Heinrich Lenz's birthday.
Here is an amazing piece of software that uses a light pen to allow the user to draw simple physical machines and set them in motion according to physical laws. You will want one.
Fabrication d'une Lampe Triode. Wow - thanks to Cornell for this! Here is a truly amazing video of a master craftsman building a triode vacuum tube from raw materials - including shaping the glass, assembling the electrodes and plates, pulling the vacuum, and finally plotting the transconductance. It nearly brought a tear to my eye.
He just can't help himself. Test & Measurement World's Martin Rowe has come up with yet another Top 16 dB* hit, "Electrical Heroes." This tribute to Volta, Ampere, Hertz, et al, should not be missed. *16 dB = x40
Custom brass sounder clacking out a Craigslist feed. This and other solenoids from the Steampunk Workshop are true works of art. If you appreciate a mix of technology and aesthetics, this is a must-see website.