Question

In a superheterodyne receiver, the IF is 455 kHz. If it is tuned 1200 kHz, the image frequency will be

• A. 1562 kHz
• B. 1675 kHz
• C. 2110 kHz
• D. 2025 kHz

Answer 1

Answer: (C)

2110 kHz

Answer 2

Given $f _{ i }=455 \,kHz$ $f _{ s }=1200\, kHz$ $\therefore$ Image frequency $= f _{ s }+2 f _{ i }$ $=1200+2 \times 455$ $=2110 \,kHz$