RF Cafe Software
About RF Cafe
1996 - 2016
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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October 1938 Radio-Craft[Table of Contents]
People old and young enjoy waxing nostalgic about and learning some of the history of early electronics. Radio-Craft was published from 1929 through 1953. All copyrights are hereby acknowledged. See all articles from Radio-Craft.
Mixing a little fun with learning has always been a good motivation for students. I have written in the past about a particular electronic circuits professor I had that liked to play practical jokes during lessons and exams. Including gag options on a multiple choice test is a great way to inject a bit of tension-easing levity while at the same time eliminating one or more opportunities to guess at a wrong answer (although no relief for the truly clueless). I sometimes do that on the RF Cafe Quizzes that I generate. Radio-Craft printed a large bunch of such quiz questions under the title "Radio WittiQuiz," where the questions and answers were provided by readers. Here is one from 1938.
Free - A 1-year subscription to Radio-Craft to each person who submits a Wittiquiz that in the opinion of the Editors is suitable for publication in Radio-Craft. Read the following Wittiquizzes; can you spot the correct answers? Now send in your idea of one or more good Wittiquizzes.
(141) An electrolyte is -
(a) Another name for an electric light.
(b) A field - about an electromagnet.
(c) A solution in a storage battery.
(142) An armature is -
(a) A person who sings on Major Bowes' radio hour.
(b) The rotating part of a motor.
(c) Part of an armchair.
(143) You will find a plate in -
(a) The dish closet.
(b) A vacuum tube.
(c) A dynamo.
(d) A flashlight.
(144) Every ham should know that hi mu is -
(a) Ham lingo for the equivalent of "hey rube" in circus vernacular.
(b) Large amplification factor.
(c) High modulation efficiency.
Jerom A. Gans
(145) A dielectric is -
(a) A 2-way, radio-controlled electric railway going between Boston and New York.
(b) A non-conducting material.
(c) A collision between 2 ohms in an electrical circuit.
(d) A new type of variable resistor.
(146) Any ham will tell you that a "T.N.T." circuit is -
(a) A circuit used to set off high explosives by remote control.
(b) A self-controlled oscillator.
(c) The circuit of a radio set which has been soaked in trinitrotoluene.
(147) In television, interlaced scanning will be used -
(a) To teach women how to knit.
(b) So as to reduce the bandwidth and still retain the same clarity and detail.
(c) To obtain new fashion designs.
(d) So that the receiver will not miss every other station while scanning the dial.
(148) Video frequency is -
(a) The name of the 2nd intermediate, frequency in a triple-detection receiver.
(b) A frequency that is visible like light rays.
(c) The frequency of the voltage resulting from television scanning.
(d) The number of times each year that a blind person can see.
(149) In television a frame is -
(a) A single complete picture.
(b) The border around the cathode-ray tube.
(c) An innocent-person made to look guilty.
(d) The receiver cabinet.
(e) A halo around the objects viewed.
(150) A fixed resistor is -
(a) One that has been repaired.
(b) One that cannot be moved from its original position.
(c) One that has constant ohms-resistance value.
W. O. Clark
(151) Hysteresis is -
(a) A mild form of insanity.
(b) Heat losses in a conductor due to rapid magnetization and demagnetization.
(c) Distortion from overloading a detector.
(d) Result of too-small capacity in filter.
(152) A Baffle is used -
(a) In a game of cards.
(b) In a wave-trap.
(c) In a Serviceman's kit.
(d) In a loudspeaker installation.
(153) All radio Servicemen know an output meter is used to -
(a) Align a radio receiver.
(b) Measure wavelength of a transmitting antenna.
(c) Measure antenna radiation.
(d) Count number of people leaving a subway exit.
(154) Radio engineers are well aware a decibel is -
(a) Spanish word for December.
(b) Trade name of a new design of S.-W. receiver.
(c) A unit of power level.
(d) One-tenth of 1 coulomb.
(155) Translation gain is the additional gain realized by -
(a) Exchanging U. S. money for foreign money.
(b) Using resistance-coupled circuits.
(c) Changing to I.F. in superhets.
(d) Using step-up audio transformer.
(156) Anyone who has studied radio theory knows time constant is -
(a) Time required for a condenser to charge or discharge.
(b) NAA (Arlington, . Va., station) time signals.
(c) Trade name of electric clock.
(d) Term used to describe D.A.V.C. action.
O. H. Cook, Coco Solo, C. Z.
Contest Rules (this, of course, does not hold anymore since Radio-Craft is out of publication)
(1) An award of a 1-year subscription to Radio-Craft:will be given, each month, to each person who submits one or more Wiitiquizzes that the Editors consider suitable for publication in Radio-Craft.
(2) Wiitiquizzes should preferably be typed; use only one side of paper.
(3) Submit as many Wiitiquizzes as you care to - the more you submit the more chance you have of winning - but each should be good.
(4) Each Wiitiquizz must incorporate humorous elements, and must be based on some term used in radio, public address or electronics. Each Wiitiquizz may have 4 "answers," only one of which of course will be correct; and, only 1 of which is non-radio.
(5) All answers must be grouped, by question number and correct-answer letter, on a separate sheet of paper.
(6) All contributions become the property of Radio-Craft. No contributions can be returned.
(7) This contest is not open to Radio-Craft employees or their relatives.
Posted September 14, 2014