Electronics and Communication Engineering - Radio Receivers - Discussion

Discussion Forum : Radio Receivers - Section 1 (Q.No. 28)
28.
In a superheterodyne receiver with an IF of 450 kHz is tuned to a signal at 1200 kHz. The image frequency is
750 kHz
990 kHz
1650 kHz
2100 kHz
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
3 comments Page 1 of 1.

Laxman said:   1 year ago
Image frequency = fs + 2fi = 1200 + 2 × 450 = 2100kHz.

Ravikrishna Podila said:   9 years ago
Please tell me any conditions for taking the positive sign or negative sign.

Ashish said:   1 decade ago
Fsi = Fs+2Fi.
Here Fs = 1200 KHz and Fi= 450 KHz.

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

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