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About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024
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 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 typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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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It's Baaaack...
Kirt's Cogitations™ #117

RF Cafe University"Factoids," "Kirt's Cogitations," and "Tech Topics Smorgasbord" are all manifestations of my rantings on various subjects relevant (usually) to the overall RF Cafe theme. All may be accessed on these pages:

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It's Baaaack...

Earth has a new satellite - for a while, anyway. In November of 1969, Apollo 12 blasted off for the Moon with crewmembers Alan Beam, Pete Conrad and Richard Gordon. It left behind, among other things, the 3rd stage of the Saturn V rocket that boosted it into space. In 1971, that 3rd stage left the Earth's orbit to position itself in a Lagrangian point orbit (a place where the Earth's and Sun's gravitational attraction is nearly equal), where it remained until April of 2002. Canadian amateur astronomer Bill Yeung spotted the new satellite in September of that year and after some help from NASA's Jet Propulsion Laboratory, confirmed it's identity using spectral techniques that recognized the titanium oxide paint on the object's surface. Alas, the 3rd stage will leave our orbit again in June of 2003, and probably won't return until the mid-2040s. I'll be in my 80s then - scary!
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