April 2021 Quiz

April 2021 Quiz

Radio Pioneers

April 2021 Quiz:

This month’s quiz pays homage to a few of the radio pioneers to whom we owe so much.

1) Who, in 1864, first showed the theoretical possibility of electromagnetic wave propagation?

A) Guglielmo Marconi
B) Reginald Fessenden
C) Heinrich Hertz
D) Lee de Forest
E) James Clerk Maxwell

2) Who, in 1886-1888, successfully proved 1) above experimentally?

A) Guglielmo Marconi
B) Reginald Fessenden
C) Heinrich Hertz
D) Lee de Forest
E) Edwin Armstrong

3) What Quebec-born inventor first transmitted speech by radio in 1900, made the first 2-way trans-Atlantic communication in 1906, and is said to have made the first AM music transmission to ships at sea, also in 1906?

A) Guglielmo Marconi
B) Reginald Fessenden
C) Heinrich Hertz
D) Lee de Forest
E) Jean-Guy Tremblay

4) Who is credited with developing both FM radio and the super-heterodyne receiver system?

    1. A) Guglielmo Marconi
      B) Reginald Fessenden
      C) Heinrich Hertz
      D) Lee de Forest
      E) Edwin Armstrong

5) Who, in 1906, developed the first amplifying (triode) vacuum tube?

    1. A) Guglielmo Marconi
      B) Reginald Fessenden
      C) Heinrich Hertz
      D) Lee de Forest
      E) James Clerk Maxwell

Good Luck! If you wish, you can submit your answers to webmaster@wiarc.ca. The answer will be published on April 30, just before a new monthly quiz for May.


Correct answers received so far:

  1. Dave VA2DGC
  2. Malcolm VE2DDZ
  3. Wayne VE2WRH
  4.