Contribute
to QRZ
to QRZ
QRZ Trivia Quiz for 2021-09-13
In what year did Edwin Armstrong create the first triode tube oscillator?
A: 1912
B: 1913
C: 1921
D: 1925
Choose an answer from above...
You are not logged in!
You're welcome to stick around and try a few trivia questions but your progress will not be tracked and you will not be entered into the sweepstakes.
You're welcome to stick around and try a few trivia questions but your progress will not be tracked and you will not be entered into the sweepstakes.