Kitchener-Waterloo ARC january 1998 The Kilowatter Newsletter

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Answers To Last Months Nostalgia Quiz
I hope everyone enjoyed last months Nostalgia Quiz. I had only two respondents though, and that’s a little discouraging. The first set of answers in was from Harold Braun VE3DWH with 16 points. The second was Gord Hayward VE3EOS who nosed Harold out with 18 points.

Here are the answers:

  1. Mercury vapour.
  2. Two large and two small. The official designation for this base style is UX4.
  3. Galena.
  4. Tin. Steel is acceptable too.
  5. Crystal microphones.
  6. 6E5. 6T5 is also acceptable.
  7. a)very low noise and exceptionally small size. b)Its small size made it competitive with transistors, but it had a high input impedance like the FET (Field Effect Transistor), which had not been invented at the time. c)Nuvistors.
  8. a)Super regenerative. b)Super Heterodyne. c)Frequency Modulation.
  9. Airborne Radio Communications
  10. 832
  11. An antenna made of several wires spaced apart by spreaders, usually center fed. The antenna could be from a foot to a foot and a half wide. When this spread of wires was seen strung out for perhaps a hundred feet and up perhaps fifty feet it was clearly a 'flat top'.
  12. Not to be confused with a Variometer, the Goniometrer was made up of two fixed coils each connected to separate antennae at 90 degrees to each other, and one moveable coil connected to the receiver and/or transmitter. The action of moving the coil changed the phase relationship between antennae and resulted in a rotating pattern without a rotator. Very useful for large low frequency arrays.
  13. Loctal.
  14. Benton Harbour, Michigan was the home of the famous Heathkit receivers, transmitters, and accessories for Amateur Radio enthusiasts.
  15. #19 set. See recent KWARC Newsletters for pictures of the one Gord EOS puts on the air from time to time.
  16. A dynamotor contained a low voltage motor that drove a high voltage generator. With a dynamotor, mobile tube equipment requiring high voltage could be powered from a car battery.
  17. Ted. In a competition in 1939 he was clocked at a speed of 75.2 wpm.
  18. Punched paper tape.
  19. It is the "Bug".
  20. CK-722. 2N107 and 2N170 (complimentary) by GE were also early transistors, but a very different case.
If you forgot what the questions where here they are again.
  1. What type of rectifier tubes cast that wonderful blue glow when they were operating?
  2. How many pins on the bottom of a number 80 tube?
  3. In a crystal set, the detector was a _________ crystal.
  4. The earphones used with a crystal set needed to have a very high impedance. In these headsets the diaphragm was a thin circle of ________.
  5. Before dynamic microphones (that was before electret even) became popular most ham radio microphones contained a piece of rochelle salt. These microphones were called ________ microphones.
  6. If your receiver didn't have an S meter, it may have had a glowing Magic Eye that cast it's eerie glow over your darkened operating position. What was one of the common tube numbers (three digits) for this tuning aid?
  7. Regarding the 6CW4 tube;
    a) what was special about this tube?
    b) what was it a transition towards?
    c) it, and others in the series were called N_______.
  8. Edwin Armstrong brought several significant things to radio. Complete the following:
    a) _________ regenerative receiver.
    b) _________ ______dyne receiver.
    c) _________ modulation.
  9. The post war years brought a series of small transmitters and receivers to the Ham world. They were notorious for harmonics and had been used by both the Navy and Air Force. Their designation started with ARC-. What did the ARC stand for?
  10. While we're on the war surplus subject, the SCR-522 set helped a lot of hams get on the 2 meter band with AM. What was the output tube of this set?
  11. Ham radio had the 'flat top' long before there were aircraft carriers, and before that nickname was applied to the brush cut. What did it refer to?
  12. What did a Goniometer do?
  13. A popular series of tubes for mobile use had eight small pins, and a special device to keep the tube securely in place. What was the name for this type of tube mounting?
  14. Benton Harbor, Michigan was a very important place for radio amateurs. Why?
  15. The war surplus # _ _ set put a lot of people on the 40 and 80 meter bands.
  16. What did a Dynamotor do?
  17. There was a ham around in the 1940's who could send and receive extraordinarily high speed Morse Code by hand. His last name was McElroy. What was his first name?
  18. The name that was applied to a device for sending Morse Code. What kind of tape did it use?
  19. The most popular semi-automatic Morse Key of that era was named after a little 'critter'. Today we still use that name. It is:
  20. A very early transistor readily available to amateurs was inside a tiny rectangular blue case. That transistor's number was CK- _ _ _.

Drop me an e-mail with your answers and then tune in next month, same time, same column for the answers to this month’s Nostalgia Quiz.

73
Bill VE3ETK

wrgraham@sympatico.ca


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