License Exam Quiz #288
de Steve, AE8AT

The quiz this week will be random, but first a reminiscence through some radio history. Radio is a relatively new thing to the average consumer, having been only about 100 years since it first entered our lives. Today we use radios that most people do not realize are radios (those being cell phones, to ensure we are all in the know). Marconi’s first transmissions, Roosevelt’s Fireside Chats, my parents as children eagerly awaiting their favorite radio programs… I’ll leave you with one more historic radio moment. It was 1951 and the Brooklyn Dodgers were playing the New York Giants for the National League Pennant. These, by some estimates, were the first nationally broadcast games. On October 3rd, a three run home run gave the Giants the come-from-behind win with the announcer Russ Hodges exclaiming “The Giants win the pennant” four times. This was the call on the radio broadcast, although it is often played over the television broadcast where the call was “Thompson swings...it’s gone” according to baseballhall.org



T6C12 Which of the following is accurately represented in electrical schematics?
A. Wire lengths
B. Physical appearance of components
C. Component connections
D. All these choices are correct



G4C04 What sound is heard from an audio device experiencing RF interference from a CW transmitter?
A. On-and-off humming or clicking
B. A CW signal at a nearly pure audio frequency
C. A chirpy CW signal
D. Severely distorted audio



E7G08 How does the gain of an ideal operational amplifier vary with frequency?
A. It increases linearly with increasing frequency
B. It decreases linearly with increasing frequency
C. It decreases logarithmically with increasing frequency
D. It does not vary with frequency



Answers:
T6C12 = C
G4C04 = A
E7G08 = D