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World's First Cellphone Spotted in Charlie Chaplain Movie?
Videos for Engineers

RF Cafe Video for Engineers - World's First Cellphone Spotted in Charlie Chaplain Movie?For the last few months, a clip from the Charlie Chaplain movie "'The Circus," filmed in 1928, has been somewhat viral within the techie world because it includes a short segment where there appears to be a strolling woman talking on a cellphone. Of course, that cannot be what she is doing, can it? It sure does appear like she's talking on a phone. Only a very few explanations are possible. 1: She is a space alien amongst the human population. 2: She is merely anearly adopter of oblivion-like behavior. 3: (and this is the most likely) She is part of a vast government conspiracy that has had advanced technology for decades and unintentionally walked into a movie shoot, thereby exposing the devious scheme. I will be filing a Freedom of Information Act request later today.

The scene is 20 seconds into the film.




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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

RF & EE Symbols Word
RF Stencils for Visio

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RF Cafe Software

Calculator Workbook
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Smith Chart™ for Visio
Smith Chart™ for Excel