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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.

My Hobby Website:
 AirplanesAndRockets.com

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Melanie and Pi (π)

Alas, poor Melanie has been around me for too long. We got a new cat from the Humane Society shelter on Saturday. I mentioned that a science type name would be cool. After tossing around a name for her, Melanie came up with Pi (π). Why Pi? Saturday was March 14, aka Pi Day (3.14).

We had planned to pick her up at 1:59 in the afternoon, but missed it by a few minutes - that would have made the cat ours at 3.14159. That is fitting, I suppose, since she is not a pure breed feline - just an approximation, like maybe Ptolemy’s value:
Pi - Ptolemey's value

Note the numerator there: 377. That is the number we use often in RF propagation to represent the impedance of free space, which is created on our electronic calculators by the operation 120 * π ... So 120π/120 = π . Sure, it is not a real identity, just an interesting coincidence. (see my Pi page)

Melanie with Our Cat, Pi  (π) - RF Cafe

Melanie and Pi (π)

If you will send me an e-mail if you have a pet with a name from science and include a photo, I will post it here.

Says Brad: Congrats on your new family addition (Pi). It takes people with warm hearts to help those that cannot help themselves. I know you will enjoy the constant company of Pi. There is always something different about a new friend saved from a humane shelter. They always seen more loving than store purchased pets. I recently save another myself after losing my two cats (Jack & Missy) after 15 years. I have always wanted a Jack Russell terrier and after the loss of my cats I decided I would go to shelters and see if I could find a Jack Russell puppy. Well I found a whole litter in MA. I picked out the runt little female and she is great ! Enjoy you new friend. - Brad E.


Says Don: This is Scamp. Named after a Navy sonar system of course. He is also a member of the U.S. Navy Seals. We had to disguise him for security reasons... and don't worry about the dog. He can "undress" himself in about 3 seconds when he gets ready. For some reason, he likes to stick his head inside that cap when you hold it open in front of him. - Don Hicks

RF Cafe visitor Daveid D. sent this photo of his "Pi," or "Cutie Pi" as she is affectionately known. Daveid's Pi was so-named because of the near perfect circle on her back, plus, if you look at the back of her head, there is a π shape formed by the brown fur.

These images have been chosen for their uniqueness. Subject matter ranges from historic events, to really cool phenomena in science and engineering, to relevant place, to ingenious contraptions, to interesting products (which now has its own dedicated Featured Product category).

Cool Pic Archive Pages

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