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Lobster Compasses
Kirt's Cogitations™ #114

These original Kirt's Cogitations™ may be reproduced (no more than 5, please) provided proper credit is given to me, Kirt Blattenberger.

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   Cog·i·ta·tion [koj-i-tey'-shun] – noun: Concerted thought or
                                        reflection; meditation; contemplation.
   Kirt [kert] – proper noun: RF Cafe webmaster.


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Lobster Compasses

You've heard of homing pigeons, but how about homing lobsters? Researchers have recently discovered that the Caribbean spiny lobster has an uncanny homing ability. There is an apparent sensing of the earth's magnetic field, because even when the lobster is far removed from its place of origin, it immediately heads on a bearing that will take it home. The theory has been tested by noting that inserting magnets, with powers similar to the earth's own, near the lobster throws off the homing ability. If the local magnetic field is adjusted to match that of the "known" location, the lobster will take off toward the simulated homeland. This is quite a feat for an invertebrate, which is generally considered to be amongst the lowest of life forms (politicians, lawyers, etc.).

RF Cafe Software

RF Cascade Workbook
RF Cascade Workbook is a very extensive system cascaded component Excel workbook that includes the standard Gain, NF, IP2, IP3, Psat calculations, input & output VSWR, noise BW, min/max tolerance, DC power cauculations, graphing of all RF parameters, and has a graphical block diagram tool. An extensive User's Guide is also included. - Only $35.
RF system analysis including
frequency conversion & filters

Smith Chart™ for Excel
Smith Chart™ for Visio
RF & EE Symbols Word
RF Stencils for Visio

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