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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 ...

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De Forest Radio Company Advertisement
December 1931 QST Article

December 1931 QST

December 1931 QST  Cover - RF CafeTable 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 are hereby acknowledged.

Lee de Forest, inventor of the Audion vacuum tube, created a business called De Forest Radio Company (although I hear he didn't build that). This advertisement for his company's electron tubes appeared in the December 1931 edition of the ARRL's QST magazine.

If you research Lee de Forest, you will find his name spelled incorrectly in many different forms: de Forest, De Forest, Lee de Forest Signature on Audion Patent - RF Cafede Forest, de Forest, to give a few. When in doubt, go straight to the source, which in this case is the signature that de Forest placed on his patent applications - he used "de Forest." Note that the official company name, according to the advertisement address at the bottom, is "De Forest Radio Company," (space used) yet the text of the copy uses the form "de Forest" (no space), and the marking on the base of the tube says, "de Forest." Sometimes marketing companies screw up, so I went searching for a more reliable source - the name given on the company's stock certificate. Sure enough, "de Forest" was the official name.

de Forest Radio Company Stock Certificate (via BullMarketGifts.com) - RF CafeBelow the ad is a broadcast made by Jean Shepherd from station WOR in New York in 1968, relating the time when he met Lee de Forest during WWI when Shepherd was 17 years old. Jean Shepherd, if you don't know, is the guy who originated the story that is the basis of "A Christmas Story," one of my favorite Christmas movies.


See all available vintage QST articles.
De Forest Radio Company Advertisement




de Forest Radio Company Advertisement in December 1931 QST Magazine






Radio Personality Jean Shepherd Comments on Meeting Lee de Forest




Mike Adams Presents Lee de Forest King of Radio Television and Film



Posted  10/26/2012