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."
No, this is not a Jedi knight zapping a high voltage line. The metal threaded into this cloak creates a Faraday shield for the lineman as he works on a 500 kV transmission cable after being dropped off by a helicopter. Cool indeed!
We here at RF Cafe fully support law enforcement, and this video was made with the help of the Denver police force. Here, the news crew tests 3 products that are supposed to provide stealth to the automated traffic radars that snap photos of license plates, and then mail you your ticket. Some actually work!
Morse Code vs. Text Messaging (SMS) contest on Jay Leno. Which do you think won? The audience chose SMS. Here is an alternate source for the video. Thanks to Cornell D. for sending this.
Sure, it is a sales pitch for Blendtec
but what a great promo idea this "Will It Blend?" website is! Watch as a perfectly good iPhone is dropped
into a blender and then Smoothie button is pushed. You will be amazed at the outcome.
Honeywell's Micro Air Vehicle has a curious resemblance to the Imperial Probe Droids in Star Wars: The Empire Strikes Back. The MAV is basically a ducted fan with a 10,500 foot service ceiling, 50 kt airspeed, up to 100 waypoints.
I have never really understood why Macs languish so far behind PCs when they seem to be much more user friendly. I must admit, however, to having never owned one. That is primarily because PCs have dominated my places of work. Anyway, these Mac vs. PC commercials are extremely clever. If Macs really do suffer user assaults like PCs do, Apple does a good job of keeping it quiet.
This video of an overcharged lithium-polymer (Li-Po) battery will make you worry just a little about the one sitting inside your cellphone, camera, or laptop computer. I use them in my R/C airplanes. Li-Po cells are generally considered safer than lithium-ion (Li-Ion) cells, but they can - and do - still catch fire in the wrong conditions.
Meet Pedro the Voder - the world's first electronic speech synthesizer. Bell Telephone Laboratory's Voder was a sensation at the 1938 New York World's Fair. The "girls" who worked this modern wonder used hands and feet to generate vowels, consonants, stops, and inflections of any language. Listen here.