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February 1943 QST Article

April 1945 QST

RF Cafe - April 1945 QST Cover[Table of Contents]These articles are scanned and OCRed from old editions of the ARRL's QST magazine. Here is a list of the QST articles I have already posted. All copyrights (if any) are hereby acknowledged.
Here is an advertisement for Electro-Voice Manufacturing Company microphones that I scanned from page 101 of my copy of the February 1943 QST magazine. As with many companies during the World War II era, this one's theme is the service their products are providing to America's servicemen. Per the ad, "If you were receiving radio messages from men in the midst of ear­splitting battle noises, you'd hear crisp speech undistorted by background sound effects. Electro-Voice Microphones, in military service, are helping to make it possible. Similar microphones, designed to achieve such results, will be available for specific commercial applications ••• after our wartime job is done."

See all available vintage QST articles.

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Posted  12/26/2012
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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
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RF Cafe Software

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