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About RF Cafe

Kirt Blattenberger - RF Cafe WebmasterCopyright
1996 - 2016
Webmaster:
Kirt Blattenberger,
 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.

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Man and Son Launch Cellphone and GPS to 100,000'
Videos for Engineers

RF Cafe Videos for Engineers - Man and Son Launch Cellphone and GPS to 100,000'Space: The Final Frontier... but it's not just for rocket scientists anymore. With increasing frequency, amateurs are managing to launch platforms bearing payloads of cameras, GPS units, altimeters, thermometers, radios, cellphones, along with various and sundry other gizmos into the lower atmosphere where the earth's curvature and the blackness of space is readily apparent. This flight by father and son team Luke and Max Geissbuhler was launched from a field in New York an amazingly simple craft with the following goal:

"In August 2010, we set out to send a camera to space. The mission was to attach an HD video camera to a weather balloon and send it up into the upper stratosphere to film the blackness beyond our earth. Eventually, the balloon will grow from lack of atmospheric pressure, burst, and begin to fall.

"It would have to survive 100 mph winds, temperatures of 60 degrees below zero, speeds of over 150 mph, and the high risk of a water landing. To retrieve the craft, it would need to deploy a parachute, descend through the clouds and transmit a GPS coordinate to a cell phone tower. Then we have to find it.

"Needless to say, there are a lot of variables to overcome."

It was a resounding success with an ascent to 100,000', then a parachute descent into a tree just 25 miles away.

Here is an idea for some budding entrepreneur: Create a line of amateur space exploration kits with varying degrees of complexity. My guess is that it would catch on like the model rocketry craze of the 1960 space race era! You can cut me in on the profits for supplying the idea.

Videos for Engineers - RF CafeThis 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.

All Videos for Engineers archive pages:
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| 16 | 17 | 18 |19 | 20 | 21 | 22 | 23 | 24 | 25 |

Please send me an e-mail if you have a good subject. Note: "Videos for Engineers" formerly went by the name "Cool Videos."