Download Aptitude Crack
img not found img not found

Radio Receivers - Engineering

Q1:

In a superheterodyne receiver with an IF of 450 kHz is tuned to a signal at 1200 kHz. The image frequency is

A 750 kHz

B 990 kHz

C 1650 kHz

D 2100 kHz

ANS:D - 2100 kHz

Fsi = Fs+2Fi.
Here Fs = 1200 KHz and Fi= 450 KHz.

Fsi = 1200+2x450.
= 1200+900.
= 2100 KHz.