Standard value for Intermediate frequency (IF) in AM receivers

The standard value for Intermediate frequency (IF) in AM receivers is

Options:

a) 455 KHz
b) 580KHz
c) 10.7 MHz
d) 50 MHz

Correct Answer: a.) 455 KHz

Explanation:

Intermediate frequency (IF) is a frequency at which the received carrier frequency is shifted for detection of message signal. The IF is generated by mixing the received carrier with the locally generated signal. The IF is generated and is shifted to further amplifiers and detectors for amplification and detection of message signal respectively. In super heterodyne AM receivers, an intermediate frequency of 455 KHz is used.