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Antique radio: Quiz

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Question 1: Earlier reaction sets also had filament adjustment ________ for each valve, and again settings had to be right to achieve reception.
AmplitudeResistorPotentiometerAnalog computer

Question 2: What does the following picture show?

  DIORA AGA RSZ-50 ca.1947 from Poland
  '50s transistor radio
  Typical insides of an antique radio, showing the vacuum tubes.
  1930's style homemade one tube regenerative radio

Question 3: In the era of early radio, only the wealthy could afford to build a ________ (superhet).
Software-defined radioSuperheterodyne receiverIntermediate frequencyDetector (radio)

Question 4: What does the following picture show?

  Wood tabletop pre-war set from 1941
  Homemade two tube radio from 1958
  DIORA AGA RSZ-50 ca.1947 from Poland
  1930's style homemade one tube regenerative radio

Question 5: With 1920s and earlier sets using bright emitter valves, the end user should understand the use of the filament ________ to avoid rapid valve failure.
Analog computerAmplitudeResistorPotentiometer

Question 6: What does the following picture show?

  1930's style homemade one tube regenerative radio
  Typical insides of an antique radio, showing the vacuum tubes.
  1930's style homemade one tube regenerative radio
  Wood tabletop pre-war set from 1941

Question 7: ________ TR series like the TR-55
NikonToshibaFujitsuSony

Question 8: Most consumer console radios were made by RCA, ________, General Electric, Montgomery Ward (under the Airline brand name), Sears (under the Silvertone brand name), Westinghouse, radio-bar and many more.
United StatesBrazilPhilcoItaly

Question 9: Such sets should be checked for the possible existence of live ________ accessible to the user, and a general safety check is advisable.
Brake (sheet metal bending)ForgingMetalworkingMetalworking terminology

Question 10: These rely on ________ to achieve adequate gain.
Exponential growthEstrogenOxytocinPositive feedback







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