License Exam Quiz #380

de Steve, AE8AT 

The quiz topic this week is RFI.

T7B03 Which of the following can cause radio frequency interference?

A. Fundamental overload

B. Harmonics

C. Spurious emissions

D. All these choices are correct

G8B02 What is the term for interference from a signal at twice the IF frequency from the desired signal?

A. Quadrature response

B. Image response

C. Mixer interference

D. Intermediate interference

E4C02 Which of the following receiver circuits can be effective in eliminating interference from strong out-of-band signals?

A. A front-end filter or preselector

B. A narrow IF filter

C. A notch filter

D. A properly adjusted product detector

Answers:

T7B03 = D

G8B02 = B

E4C02 = A